Page 1
NC
RO
RE
DE
DI
GND
14 Pin NSOIC
SP3070E
SP3073E
SP3076E
Full Duplex
V
CC
NC
A
B
Z
Y
1
2
3
4
5
6
14
13
12
11
10
9
NC
GND
7
8
查询SP3070-3078E供应商
®
SP3070E - SP3078E Family
±15kV ESD-Protected, 3.3V, 1/8 Load, Failsafe
RS-485/RS422 Transceivers
FEATURES
■ ±15kV ESD protection for RS485 pins
■ 3.3V low-power operation
■ Advanced Receiver-failsafe protection for
open, shorted or terminated lines
■ Up to 256 Transceivers may share Bus
■ Very low load for 8x greater fanout
■ Hot Swap glitch protection RE and DE
■ Thermal shutdown protects against driver
contention
■ Available in three industry standard footprints
■ SP3070E, 3073 and 3076 in Full-Duplex (14 pin)
■ SP3071E, 3074 and 3077 in Full-Duplex (8 pin)
■ SP3072E, 3075 and 3078 in Half-Duplex (8 pin)
■ Three applications-optimized speed grades
■ SP3070-72E: 250kbps slew-limited
■ SP3073-75E: 500kbps slew-limited
■ SP3076-78E: 16Mbps high speed
■ Small form factor SO-narrow packages
■ Industrial (-40 to +85ºC) and Extended
(-40 to +85ºC) temperature grades
Now Available in Lead Free Packaging
RO
RE
DE
V
R
GND
DI
CC
O
D
I
1
8 PIN NSOIC
2
3
4
1
8 PIN NSOIC
2
3
4
SP3072E
SP3075E
SP3078E
Half Duplex
SP3071E
SP3074E
SP3077E
Full Duplex
8
V
CC
7
B
6
A
5
GND
8
A
7
B
6
Z
5
Y
APPLICATIONS
■ Industrial Control, Utility Meters Building Automation, Instrumentation, Point of Sale
DESCRIPTION
The SP3070-3078E differential line transceivers are suitable for bidirectional communication
on balanced multipoint bus transmission lines and comply with both RS485 and RS422 EIA
Standards. Each device consists of a differential driver and differential receiver. All devices
operate from a 3.3V power supply.
High receiver input impedance allows a large number of transceivers to share a common data
bus while maintaining signal margin and without excessive loading or use of expensive
repeaters. The high impedance driver output is maintained over the entire common-mode
voltage range from -7 to +12V. Receivers will failsafe to logic 1 output when inputs are open,
shorted or terminated. Drivers include built-in short-circuit protection and a thermal-overload
shutdown to protect against excessive power dissipation from bus contention or cable faults.
All RS485 inputs are ESD protected up to ±15kV (Air-Gap and Human Body Model) and up
to ±8kV Contact discharge (IEC 1000-4-2).
Date: 03/28/05 SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers © Copyright 2005 Sipex Corporation
1
Page 2
DEVICE ARCHITECTURE AND BLOCK DIAGRAMS
Devices are available in three industry standard architectures and footprints. In each footprint
there are three speed grades available.
GND
GND
GND
NC
REB
DE
V
1
2
R
3
4
5
D
6
7
1
CC
2
R
3
D
4
R
D
R
D
14
V
CC
13
NC
12
A
11
B
10
Z
9
Y
8
NC
8
A
7
B
6
Z
5
Y
14 Pin Full Duplex:
SP3070E, 250kbps slew limited
SP3073E, 500kbps slew limited
SP3076E, 16Mbps
8 Pin Full Duplex:
SP3071E, 250kbps slew limited
SP3074E, 500kbps slew limited
SP3077E, 16Mbps
8
CC
1
RO
2
RE
3
DE
4
DI
Date: 03/28/05 SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers © Copyright 2005 Sipex Corporation
R
D
V
7
B
6
A
5
GND
8 Pin Half Duplex:
SP3072E, 250kbps slew limited
SP3075E, 500kbps slew limited
SP3078E, 16Mbps
2
Page 3
These are stress ratings only and functional operation of the device at
these ratings or any other above those indicated in the operation sections
of the specifications below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect reliability.
VCC.....................................................................................................+6.0V
Input Voltage at control input pins (RE, DE).........................-0.3V to 6V
Driver Input Voltage (RE, DE)...............................................-0.3V to 6V
Driver Output Voltage (A, B, Y, & Z)....................................-8V to +13V
Receiver Input Voltage (A, B)..............................................-8V to +13V
Continuous Power Dissipation at Ta = 70oC
8-pin SO (derate 5.88mW/oC above +70oC)................................471mW
8-pin PDIP (derate 9.29mW/oC above +70oC)............................727mW
14-pin SO (derate 8.33mW/oC above +70oC).............. .............667mW
14-pin PDIP (derate 10mW/oC above +70oC).................. ..........800mW
Operating Temperature Ranges
SP307_EMN.................................................................-40ºC to +125ºC
SP307_EEN ...............................................................-40ºC to +85ºC
Junction Temperature............................................................. ..+150ºC
Storage Temperature Range..........................................-65ºC to +150º C
Lead Temperature (soldering, 10s) ........................................... +300º C
ELECTRICAL CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS
Unless otherwise noted V
ambient temperature TA = +25ºC. The ♦ denotes the specifications which apply over the full operating range
unless otherwise noted.
= +3.3 ±0.3V, ambient temperature T
CC
< TA < T
MIN
. Typical values are at VCC = 3.3,
MAX
RETEMARAP.MYS.NIM.PYT.XAMSTINU
2V
tuptuOrevirDlaitnereffiDV
foedutingaMniegnahC
egatloVtuptuOlaitnereffiD
egatloV
V∆
tuptuOedoMnommoCrevirD
V
5.1V
DO
DO
CO
VCC2/3 V
foedutingaMniegnahC
egatloV
tuptuOedoMnommoC
egatloVhgiHtupnIV
egatloVwoLtupnIV
siseretsyHtupnIV
tnerruCtupnII
tsriFecnadepmItupnI
)pawstoH(noitisnarT
)ZdnaY(egakaeLtuptuO
)BdnaA(xelpuDlluF
V∆
CO
2V
HI
LI
SYH
1-1Aµ
NI
001Vm
101 Ωk
I
O
001-
0052±
tnerruCtiucriC-trohSrevirDI
DSO
052-0
CC
V
CC
V
CC
2.0V
2.0±V 1erugiF,Ω001ro45=LR
8.0V ER,ID,ED
521+
Aµ
AmV≤V7-
♦♦♦♦♦
SNOITIDNOC
1erugiF,)224-SR(Ω001=LR
1erugiF,)584-SR(Ω45=LR
♦♦♦♦♦
♦♦♦♦♦
♦♦♦♦♦
♦♦♦♦♦
♦♦♦♦♦
♦♦♦♦♦
daoLoN
1erugiF,Ω001ro45=LR
1erugiF,Ω001ro45=LR
ER,ID,ED
ER,ID,ED
ER,ID,ED
ER,ED
♦♦♦♦♦
eromwardlliwnoitisnarttsriF
)pawstoH(tnerruc
♦♦♦♦♦
V
♦♦♦♦♦
DNG=ED
CC
TUO
V
V6.3roDNG=
V
V21+=
NI
V7-=
NI
)A4erugiF(,V21≤
Date: 03/28/05 SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers © Copyright 2005 Sipex Corporation
3
Page 4
Unless otherwise noted V
ambient temperature T
unless otherwise noted.
A
ELECTRICAL CHARACTERISTICS
= +3.3 ±0.3V, ambient temperature T
CC
= +25ºC. The ♦ denotes the specifications which apply over the full operating range
< TA < T
MIN
. Typical values are at VCC = 3.3,
MAX
SRETEMARAPMYSNIMPYTXAMSTINU
xelpuDflaH
)BdnaA(tnerruCtupnI
dlohserhTnwodtuhS-lamrehTT
siseretsyHnwodtuhSlamrehTT
I
B,A
001-V
ST
HST
521
561Cº
51Cº
♦♦♦♦♦
♦♦♦♦♦
Aµ
V
DNG=ED
CC
SNOITIDNOC
V
6.3roDNG=
V21+=
NI
V7-=
NI
♦♦♦♦♦
♦♦♦♦♦
REVIECER
dlohserhTlaitnereffiDrevieceR
)ytivitisneS(
V
siseretsyHtupnIrevieceRV∆
egatloVhgiHtuptuOORV
egatloVwoLtuptuOORV
revieceR
tatnerruCtuptuOetatS-irT
I
ecnatsiseRtupnIrevieceRR
tnerruC
tiucriC-trohStuptuOrevieceR
I
002-521-05-Vm ≤V7-VMCV21≤
HT
HT
HO
LO
RZO
NI
RZO
51Vm
-ccV
6.0
4.0V
1-/+Aµ
69 Ωk
06±AmV≤V0
V
♦♦♦♦♦
♦♦♦♦♦
I
O
♦♦♦♦♦
I
O
♦♦♦♦♦
♦♦♦♦♦
V≤0
OV≤CC
V0=bV+aV
Am1-=
Am1=
V≤V7-
V21≤
MC
V≤
OR
CC
TNERRUCYLPPUS
8.05.1
tnerruCylppuSI
CC
8.05.1V=ER,daoLoN
Am
♦♦♦♦♦
V=ED,0=ER,daoLoN
CC
V=ED,
CC
CC
8.05.10=ED,0=ER,daoLoN
edom
nwodtuhSnitnerruCylppuS
I
NDHS
50.03AµV=ER
CC
DNG=ED,
NOITCETORPDSE
51±
Bdna,A,Z,YrofnoitcetorPDSE
51±)2-4-0001CEI(paGriA
♦♦♦♦♦
Vk
ledoMydoBnamuH
8±)2-4-0001CEI(tcatnoC
Date: 03/28/05 SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers © Copyright 2005 Sipex Corporation
4
Page 5
Unless otherwise noted V
ambient temperature TA = +25ºC.
= +3.3 ±0.3V, ambient temperature T
CC
RETEMARAPLOBMYS.NIM.PYT.XAMSTINUSNOITIDNOC
yaleDnoitagaporPrevirD
emiTllaF
wekStuptuOlaitnereffiDrevirD
t(
t-
)
HLPD
LHPD
etaRataDmumixaM052-- spbk
hgiHtuptuOotelbanErevirDt
woLtuptuOotelbanErevirDt
woLmorfemiTelbasiDrevirDt
hgiHmorfemiTelbasiDrevirDt
hgiHtuptuO
woLtuptuO
nwodtuhSotemiTt
DRIVER SWITCHING CHARACTERISTICS
< TA < T
MIN
t
HLPD
t
LHPD
roesiRtuptuOlaitnereffiDrevirD
t
,RDtFD
t
WEKSD
HZD
LZD
ZLD
ZHD
otnwodtuhSmorfelbanErevirD
t
otnwodtuhSmorfelbanErevirD
t
NDHS
052- 0051sn
052- 0051sn
053- 0061sn
-- 002sn
-- 0052sn4erugiF
-- 0052sn5erugiF
-- 001sn5erugiF
-- 001sn4erugiF
-- 0055sn4erugiF
)NDHS(HZD
-- 0055sn5erugiF
)NDHS(LZD
05002006sn
. Typical values are at VCC = 3.3,
MAX
SCITSIRETCARAHCGNIHCTIWSREVIRDE2703PS&E1703PS,E0703PS
C
L
C
L
C
L
R,Fp05=
L
3&2erugiF
R,Fp05=
L
3&2erugiF
R,Fp05=
L
3&2erugiF
,Ω45=
,Ω45=
,Ω45=
RECEIVER SWITCHING CHARACTERISTICS
Unless otherwise noted V
ambient temperature TA = +25ºC.
etaRataD052-- spbk
hgiHtuptuO
woLtupttuO
Date: 03/28/05 SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers © Copyright 2005 Sipex Corporation
= +3.3 ±0.3V, ambient temperature T
CC
< TA < T
MIN
. Typical values are at VCC = 3.3,
MAX
2703PS&1703PS,0703PSscitsiretcarahCgnihctiwSrevieceR
RETEMARAPLOBMYS.NIM.PYT.XAMSTINUSNOITIDNOC
t
yaleDnoitagaporPrevieceR
t-
HLPD
)t
LHPD
t(wekStuptuOrevieceR
hgiHtuptuOotelbanErevieceRt
woLtuptuOotelbanErevieceRt
woLmorfemiTelbasiDrevieceRt
hgiHmorfemiTelbasiDrevieceRt
otnwodtuhSmorfelbanErevieceR
otnwodtuhSmorfelbanErevieceR
HLPR
t
LHPR
WEKSR
HZR
LZR
ZLR
ZHR
t
t
-- 002sn
-- 002sn
-- 03snC
-- 05sn8erugiF
-- 05sn8erugiF
-- 002sn8erugiF
-- 001sn8erugiF
-- 0004sn8erugiF
)NDHS(HZR
-- 0004sn8erugiF
)NDHS(LZR
C
L
L
7&6erugiF,Fp51=
7&6erugiF,Fp51=
5
Page 6
Unless otherwise noted V
ambient temperature T
A
= +3.3 ±0.3V, ambient temperature T
CC
= +25ºC.
RETEMARAPLOBMYS.NIM.PYT.XAMSTINUSNOITIDNOC
< TA < T
MIN
. Typical values are at VCC = 3.3,
MAX
DRIVER SWITCHING CHARACTERISTICS
SCITSIRETCARAHCGNIHCTIWSREVIRDE5703PS&E4703PS,E3703PS
t
yaleDnoitagaporPrevirD
roesiRtuptuOlaitnereffiDrevirD
emiTllaF
wekStuptuOlaitnereffiDrevirD
t-
t(
)
HLPD
LHPD
HLPD
t
LHPD
t
,RDtFD
t
WEKSD
081-008sn
081-008sn
002-008sn
-- 001sn
C
L
C
L
C
L
R,Fp05=
3&2erugiF
R,Fp05=
3&2erugiF
R,Fp05=
3&2erugiF
,Ω45=
L
,Ω45=
L
,Ω45=
L
etaRataD005-- spbk
hgiHtuptuOotelbanErevirDt
woLtuptuOotelbanErevirDt
woLmorfemiTelbasiDrevirDt
hgiHmorfemiTelbasiDrevirDt
otnwodtuhSmorfelbanErevirD
hgiHtuptuO
otnwodtuhSmorfelbanErevirD
woLtuptuO
nwodtuhSotemiTt
HZD
LZD
ZLD
ZHD
t
t
NDHS
-- 0052sn4erugiF
-- 0052sn5erugiF
-- 001sn5erugiF
-- 001sn4erugiF
-- 0054sn4erugiF
)NDHS(HZD
-- 0054sn5erugiF
)NDHS(LZD
05002006sn
RECEIVER SWITCHING CHARACTERISTICS
Unless otherwise noted V
ambient temperature TA = +25ºC.
hgiHtuptuO
woLtupttuO
nwodtuhSotemiTt
Date: 03/28/05 SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers © Copyright 2005 Sipex Corporation
= +3.3 ±0.3V, ambient temperature T
CC
< TA < T
MIN
. Typical values are at VCC = 3.3,
MAX
RETEMARAPLOBMYS.NIM.PYT.XAMSTINUSNOITIDNOC
t
yaleDnoitagaporPrevieceR
t(wekStuptuOrevieceR
t-
)t
HLPD
LHPD
HLPR
t
LHPR
-- 002sn
-- 002sn
-- 03snC
WEKSR
etaRataDmumixaM005-- spbk
hgiHtuptuOotelbanErevieceRt
woLtuptuOotelbanErevieceRt
woLmorfemiTelbasiDrevieceRt
hgiHmorfemiTelbasiDrevieceRt
otnwodtuhSmorfelbanErevieceR
otnwodtuhSmorfelbanErevieceR
HZR
LZR
ZLR
ZHR
t
t
NDHS
-- 05sn8erugiF
-- 05sn8erugiF
-- 05sn8erugiF
-- 05sn8erugiF
-- 0004sn8erugiF
)NDHS(HZR
-- 0004sn8erugiF
)NDHS(LZR
05002006sn
5703PS&4703PS,3703PSscitsiretcarahCgnihctiwSrevieceR
C
L
L
7&6erugiF,Fp51=
7&6erugiF,Fp51=
6
Page 7
Unless otherwise noted Vcc=+3.3±0.3V, ambient temperature Tmin < Ta < Tmax. Typical values are at Vcc = 3.3,
DRIVER SWITCHING CHARACTERISTICS
ambient temperature Ta = +25ºC
SCITSIRETCARAHCGNIHCTIWSREVIRDE8703PS&E7703PS,E6703PS
RETEMARAPLOBMYS.NIM.PYT.XAMSTINUSNOITIDNOC
yaleDnoitagaporPrevirD
t
t
roesiRtuptuOlaitnereffiDrevirD
t
emiTllaF
wekStuptuOlaitnereffiDrevirD
t(
t-
)
HLPD
LHPD
,RDtFD
t
-- 05sn
HLPD
-- 05sn
LHPD
-- 51sn
--8 sn
WEKSD
C
L
C
L
C
L
R,Fp05=
3&2erugiF
R,Fp05=
3&2erugiF
R,Fp05=
3&2erugiF
,Ω45=
L
,Ω45=
L
,Ω45=
L
etaRataD61-- spbM
hgiHtuptuOotelbanErevirDt
woLtuptuOotelbanErevirDt
woLmorfemiTelbasiDrevirDt
hgiHmorfemiTelbasiDrevirDt
otnwodtuhSmorfelbanErevirD
hgiHtuptuO
otnwodtuhSmorfelbanErevirD
woLtuptuO
HZD
LZD
ZLD
ZHD
t
t
nwodtuhSotemiTt
-- 051sn4erugiF
-- 051sn5erugiF
-- 001sn5erugiF
-- 001sn4erugiF
-- 0081sn4erugiF
)NDHS(HZD
-- 0081sn5erugiF
)NDHS(LZD
NDHS
05002006sn
RECEIVER SWITCHING CHARACTERISTICS
Unless otherwise noted Vcc=+3.3±0.3V, ambient temperature Tmin < Ta < Tmax. Typical values are at Vcc = 3.3,
ambient temperature Ta = +25ºC
8703PS&7703PS,6703PSscitsiretcarahCgnihctiwSrevieceR
RETEMARAPLOBMYS.NIM.PYT.XAMSTINUSNOITIDNOC
t
yaleDnoitagaporPrevieceR
t(wekStuptuOrevieceR
t-
)t
HLPD
LHPD
HLPR
t
LHPR
-0457sn
-0457sn
--8 snC
WEKSR
C
L
L
Cº58+ot04-
etaRataD61-- spbM
hgiHtuptuOotelbanErevieceRt
woLtuptuOotelbanErevieceRt
woLmorfemiTelbasiDrevieceRt
hgiHmorfemiTelbasiDrevieceRt
otnwodtuhSmorfelbanErevieceR
hgiHtuptuO
otnwodtuhSmorfelbanErevieceR
woLtuptuO
nwodtuhSotemiTt
Date: 03/28/05 SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers © Copyright 2005 Sipex Corporation
HZR
LZR
ZLR
ZHR
t
t
NDHS
-- 06snCº58+ot04-,8erugiF
-- 06snCº58+ot04-,8erugiF
-- 05sn8erugiF
-- 05sn8erugiF
-- 0081sn8erugiF
)NDHS(HZR
-- 0081sn8erugiF
)NDHS(LZR
05002006sn
7
,7&6erugiF,Fp51=
,7&6erugiF,Fp51=
Page 8
FIGURE 1. DRIVER DC TEST CIRCUIT
FIGURE 2. RECEIVER DC TEST CIRCUIT
A
R/2
ID
0 or 3V
V
D
I
D
V
CC
OD
R/2
OC
V
V
R
B
RE
FIGURE 3. DRIVER PROPAGATION DELAY TIME TEST CIRCUIT AND TIMING
DIAGRAM
C
L
50pF
DI
R
Y
D
OD
V
L
54Ω
OUT
Z
3.3V
V
DI
CC
0
VCC/2
t
PLH
t
PHL
Z
V
Y
V
O
V
DIFF
-V
O
Date: 03/28/05 SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers © Copyright 2005 Sipex Corporation
O
10%
1/2 V
t
R
1/2 V
O
V
90%
V
= V(Y) - V(Z)
DIFF
SKEW
= t
PLH - tPHL
90%
10%
t
O
F
8
Page 9
FIGURE 4. DRIVER ENABLE & DISABLE TIMES TEST CIRCUIT & TIMING DIAGRAM
Y
S1
OUT
Z
L
= 50pF
C
L
= 500Ω
R
0 or V
DI
CC
D
GENERATOR
DE
50Ω
t
ZL, tZL(SHDN
VOM = (VOL+ VCC)/2
OUT
FIGURE 4A. DRIVER CONTENTION TEST
DE = 0 or 3V
DI = 0 or 3V
D
A/Y
B/Z
100Ω
IOSD
V
CC
V
/2
CC
0
0.25V
t
LZ
0
-7V to +12V
Date: 03/28/05 SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers © Copyright 2005 Sipex Corporation
V
9
Page 10
FIGURE 5. DRIVER ENABLE & DISABLE TIMES TEST CIRCUIT & TIMING DIAGRAM
VCC
L = 500Ω
C
L = 50pF
R
OUT
0 or VCC
S1
DI
Y
D
Z
GENERATOR
DE
OUT
V
CC
V
OL
t
ZL, tZL(SHDN
50Ω
VOM = (VOL+ VCC)/2
V
CC
V
/2
CC
t
LZ
0.25V
FIGURE 6. RECEIVER PROPAGATION DELAY TEST CIRCUIT & TIMING DIAGRAM
A
OUT
ID
V
B
RE
R
C
L
15pF
0
A
B
t
PHL
t
PLH
1.5V
OUT
Date: 03/28/05 SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers © Copyright 2005 Sipex Corporation
+1V
-1V
V
OH
V
OL
10
Page 11
FIGURE 7. RECEIVER ENABLE & DISABLE TIMES TEST CIRCUIT
1.5V
-1.5V
S3
GENERATOR
B
A
R
RE
50Ω
C
L
= 15pF
1kΩ
FIGURE 8. RECEIVER ENABLE & DISABLE TIMING DIAGRAM
S1 is open S2 is closed S3 = 1.5V
S1 is closed, S2 is open, S3 = -1.5V
3V
1.5V
RE
OUT
t
ZH, tZH(SHDN)
VOH/2
V
OH
0V
RE
OUT
V
S1
S2
OL
= VCC/2
V
1.5V
ZL, tZL(SHDN)
t
CC
3V
0V
V
CC
V
OL
S1 is open S2 is closed S3 = 1.5V
1.5V
RE
t
HZ
3V
S1 is closed, S2 is open, S3 = -1.5V
3V
RE
1.5V
LZ
t
0V
0.25V
V
OH
OUT
0V
OUT
0.25V
Date: 03/28/05 SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers © Copyright 2005 Sipex Corporation
V
CC
V
OL
11
Page 12
FUNCTION TABLES
)xelpuDlluF(E6703PS,E3703PS,E0703PS
GNITTIMSNART
stupnIstuptuO
EREDIDZY
X1101
X1010
00X Z-hgiH
10X nwodtuhS
)xelpuDlluF(E7703PS,E4703PS,E1703PS
GNITTIMSNART
stupnIstuptuO
IDZ Y
10 1
01 0
GNIVIECER
stupnItuptuO
EREDB,AOR
0X Vm05-≥ 1
0X Vm002-≤ 0
XX ,nepO
detrohS
11 X Z-hgiH
10 X nwodtuhS
GNIVIECER
stupnItuptuO
B,AOR
Vm05-≥ 1
Vm002-≤ 0
detrohs/nepO1
)xelpuDlluF(E6703PS,E3703PS,E0703PS
1
)xelpuDlluF(E7703PS,E4703PS,E1703PS
)xelpuDflaH(E8703PS,E5703PS,E2703PS
GNITTIMSNART
stupnIstuptuO
EREDIDZ/BY/A
X1101
X1010
00X Z-hgiH
10X nwodtuhS
Date: 03/28/05 SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers © Copyright 2005 Sipex Corporation
EREDB,AOR
0X Vm05-≥ 1
0X Vm002-≤ 0
XX detrohs/nepO1
11 X Z-hgiH
10 X nwodtuhS
stupnItuptuO
GNIVIECER
)xelpuDflaH(E8703PS,E5703PS,E2703PS
12
Page 13
PIN DESCRIPTION
XELPUDLLUF
SECIVED
E0703PSE1703PSE2703PS
E3703PSE4703PSE5703PS
FLAH
XELPUD
SECIVED
NIP
EMAN
E6703PSE7703PSE8703PS
REBMUNNIP
22 1OR
3- 2ER
4- 3ED
53 4 ID
7,645DNGdnuorG
95 -Y tuptuOrevirDgnitrevninoN
NOITCNUFNIP
≥)B–A(fidnawolsiERnehW.tuptuOrevieceR
.wolsiOR,Vm002-≤)B–A(fI.hgiHsiOR,Vm05-
.delbanesiOR,wolsiERnehW.elbanEtuptuOrevieceR
ebdluohsER.ecnadepmihgihsiOR,hgihsiERnehW
-tohasiER.edomnwodtuhsretneotwolEDdnahgih
.tupnipaws
erastuptuo,hgihsiEDnehW.elbanEtuptuOrevirD
ED.ecnadepmihgiherastuptuo,wolsiEDnehW.delbane
siED.edomnwodtuhsretneothgihERdnawolebdluohs
.tupnipaws-toha
secrofIDnolevelwola,hgihEDhtiW.tupnIrevirD
,ylralimiS.hgihtuptuognitrevnidnawoltuptuognitrevninon
dnahgihtuptuognitrevninonsecrofIDnolevelhgiha
.woltuptuognitrevni
016-Z tuptuOrevirDgnitrevnI
117-B tupnIrevieceRgnitrevnI
--7B tuptuOrevirDgnitrevnIdnatupnIrevieceRgnitrevnI
218-A tupnIrevieceRgnitrevninoN
--6A
4118V
CC
tuptuO
ylppuSevitisoPVCCssapyB.V
.roticapac
CC
revirDgnitrevninoNdnatupnIrevieceRgnitrevninoN
Fu1.0ahtiwDNGot
31,8,1--CNtcennoCoN
Date: 03/28/05 SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers © Copyright 2005 Sipex Corporation
13
Page 14
DETAILED DESCRIPTION
DETAILED DESCRIPTION
The SP307XE family of high speed transceivers for RS-485/RS-422 communication contain one driver and one receiver. These
devices feature fail-safe circuitry, which guarantees a logic-high receiver output when the
receiver inputs are open or shorted, or when
they are connected to a terminated transmission line with all drivers disabled. The
SP3070E, SP3072E, SP3073E, SP3075E,
SP3076E and SP3078E also feature a
hotswap capability allowing live insertion without error data transfer. The SP3070E,
SP3071E and SP3072E feature reduced slewrate drivers that minimize EMI and reduce
reflections caused by improperly terminated
cables, allowing error-free data transmission
up to 250kbps. The SP3073E, SP3074E and
SP3075E also offer slew -rate limits allowing
transmit speeds up to 500kbps. The SP3076E,
SP3077E, SP3078E driver slew rates are not
limited, making transmit speeds up to 16Mbps
possible.
The SP3072E, SP3075E and SP3078E are
half-duplex transceivers, while the SP3070E,
SP3071E, SP3073E, SP3074E, SP3076E,
and SP3077E are full duplex transceivers.
All devices operate from a single 3.3V supply.
Drivers are output short-circuit current limited.
Thermal-shutdown circuitry protects drivers
against excessive power dissipation. When
activated, the thermal-shutdown circuitry
places the driver outputs into a high-impedance state.
RECEIVER INPUT FILTERING
SP3070-SP3075 receivers incorporate input
filtering in addition to input hysteresis. This
filtering enhances noise immunity with differential signals that have very slow rise and fall
times. Receiver propagation delay increases
by 25% due to this filtering.
FAIL SAFE
The SP3070 family guarantees a logic-high
receiver output when the receiver inputs are
shorted, open, or when they are connected to
a terminated transmission line with all drivers
disabled. If A - B is less than or equal to 200mV, RO is logic low. In the case of a
terminated bus with all transmitters disabled
the receiver's differential input voltage is pulled
to 0V by the termination. With the receiver
thresholds of the SP3070E family, this results
in a logic high with a 50mV minimum noise
margin. In compliance with the EIA/TIA-485
standard, the SP3070E family has a 50mV 200mV threshold.
HOT-SWAP CAPABILITY
When circuit boards are inserted into a hot
backplane, differential disturbances to the
data bus can lead to data errors. Upon initial
circuit board insertion, the data communication processor undergoes its own power-up
sequence. During this period, the processor's
logic-output drivers are high impedance and
are unable to drive the DE and RE inputs of
these devices to a defined logic level. Leakage currents up to 10µA from the high-impedance state of the processor's logic drivers
could cause standard CMOS enable inputs of
a transceiver to drift to an incorrect logic level.
Additionally, parasitic circuit board capacitance could cause coupling of VCC or GND to
the enable inputs. Without the hot-swap capability, these factors could improperly enable
the transceiver's driver or receiver.
When VCC rises, an internal pulldown circuit
holds DE low and RE high for approximately
10 microseconds. After the initial power-up
sequence, the pulldown circuit becomes transparent, resetting the hot-swap tolerable input.
15KV ESD PROTECTION
As with all Sipex devices, ESD-protection
structures are incorporated on all pins to
protect against electrostatic discharges encountered during handling and assembly. The
driver output and receiver inputs of the
SP3070E family of devices have extra protection against static electricity. Sipex's engineering team have developed state of the art
structures to protect these pins against ESD
of 15kV without damage. The ESD structures
withstand high ESD in all states: normal op-
Date: 03/28/05 SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers © Copyright 2005 Sipex Corporation
14
Page 15
DETAILED DESCRIPTION
eration, shutdown, and powered down. After
an ESD event, the SP3070E - SP3078E keep
working without latchup or damage.
ESD protection can be tested in various ways.
The transmitter outputs and receiver inputs of
the SP3070E - SP3078E are characterized
for protection to the following limits:
■ ±15kV using the Human Body Model
■ ±8kV using the Contact Discharge
method specified in IEC 1000-4-2
■ ±15kV Airgap
ESD TEST CONDITIONS
ESD performance depends on a variety of
conditions. Contact Sipex for a reliability
report that documents test setup, methodology and results.
IEC 1000-4-2
The IEC 1000-4-2 standard covers ESD
testing and performance of finished equipment. However, it does not specifically refer
to integrated circuits. The SP3070E family
of devices helps you design equipment to
meet IEC 1000-4-2, without the need for
additional ESD-protection components.
The major difference between tests done
using the Human Body Model and IEC 10004-2 is higher peak current in IEC 1000-4-2,
because series resistance is lower in the
IEC 1000-4-2 model. Hence, the ESD withstand voltage measured to EC 1000-4-2 is
generally lower than that measured using
the human body model.
The air-gap test involves approaching the
device with a charged probe. The contactdischarge method connects the probe to the
device before the probe is energized.
MACHINE MODEL
The machine model for ESD tests all pins
using a 200pF storage capacitor and zero
discharge resistance. The objective is to
emulate the stress caused when I/O pins are
contacted by handling equipment during test
and assembly.
256 TRANSCEIVERS ON THE BUS
The standard RS-485 receiver input impedance is 12kΩ (1 unit load), and the standard
driver can drive up to 32 unit loads. The
SP3070E family of transceivers has a 1/8unit load receiver input impedance (96Ω),
allowing up to 256 transceivers to be connected in parallel on one communication
line. Any combination of these devices as
well as other RS-485 transceivers with a
total of 32 unit loads or fewer can be connected to the line.
REDUCED EMI AND REFLECTIONS
The SP3070E, SP3071E and SP3072E feature reduced slew-rate drivers that minimize
EMI and reduce reflections caused by improperly terminated cables, allowing errorfree data transmission up to 250kbps. The
SP3073, SP3074 and SP3075 offer higher
driver output slew-rate limits, allowing transmit speeds up to 500kbps.
LOW POWER SHUTDOWN MODE
Low-power shutdown mode is initiated by
bringing both RE high and DE low. In shutdown, the devices typically draw only 50nA
of supply current.
RE and DE can be driven simultaneously;
the parts are guaranteed not to enter shutdown if RE is high and DE is low for less than
50ns. If the inputs are in this state for at least
600ns, the parts are guaranteed to enter
shutdown.
Enable times t
was not in a low-power shutdown state.
Enable times t
the parts were shut down. It takes drivers
and tZL assume the part
ZH
ZH(SHDN)
and t
ZL(SHDN)
assume
and receivers longer to become enabled
from low-power shutdown mode t
and t
ZL(SHDN)
able mode (tZH, tZL)
than from driver/receiver-dis-
ZH(SHDN)
Date: 03/28/05 SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers © Copyright 2005 Sipex Corporation
15
Page 16
DRIVER OUTPUT PROTECTION
Two mechanisms prevent excessive output
current and power dissipation caused by
faults or by bus contention. First, current
limit on the ouput stage, provides immediate
protection against short circuits over the
whole common-mode voltage range. Second, a thermal-shutdown circuit, forces the
driver outputs into a high-impedance state if
the die temperature becomes excessive.
LINE LENGTH
The RS-485/RS422 standard covers line
lengths up to 4000ft.
DETAILED DESCRIPTION
TYPICAL APPLICATIONS
The SP3072E, SP3075E and SP3078E
transceivers are designed for bidirectional
data communications on multipoint bus transmission lines.
To minimize reflections, terminate the line at
both ends in its characteristic impedance,
and keep stub lengths off the main line as
short as possible. The slew-rate-limited
SP3070 - SP3075E are more tolerant of
imperfect termination.
PARTS SELECTOR GUIDE
TRAP
REBMUN
E0703PSlluF52.0seYseY6524108157,E0703XAM
E1703PSlluF52.0oNoN6528 97157,E1703XAM3943PS
E2703PSflaH52.0seYseY6528 67157,E2703XAM3843PS
E3703PSlluF5.0seYseY6524108157,E3703XAM
E4703PSlluF5.0oNoN6528 97157,E4703XAM
E5703PSflaH5.0seYseY6528 67157,E5703XAM4943PS
E6703PSlluF61seYseY6524108157,E6703XAM1943PS
E7703PSlluF61oNoN6528 97157,E7703XAM0943PS
E8703PSflaH61seYseY
lluF/flaH
xelpuD
etarataD
spbM
-tuhS
nwod
revieceR
elbanErevirD
.snarT
niP
suBnO
6528
tnuoC
dradnatSyrtsudnI
tuoniP
67157,E8703XAM,5843PS
niP
elbitapmoC
:morfedargpU
1843PS
Date: 03/28/05 SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers © Copyright 2005 Sipex Corporation
16
Page 17
E/2
PACKAGE: 8 PIN NSOIC
D
e
Ø
INDEX AREA
(D/2 X E1/2)
1
TOP VIEW
8 Pin NSOIC JEDEC MO-012 (AA) Variation
SYMBOL
MIN NOM MAX
A 1.35 - 1.75
A1 0.1 - 0.25
A2 1.25 - 1.65
b 0.31 - 0.51
c 0.17 - 0.24
D
E
E1
e
4.90 BSC
6.00 BSC
3.90 BSC
1.27 BSC
L 0.4 - 1.27
L1
L2
1.04 REF
0.25 BSC
ø0º-8º
ø1 5º - 15º
Note: Dimensions in (mm)
E1
E1/2
b
E
Seating Plane
Ø1
L1
VIEW C
A
A1
A2
B
B
SIDE VIEW
SEE VIEW C
b
c
L
L2
Gauge Plane
Seating Plane
Ø
BASE METAL
SECTION B-B
WITH PLATING
Date: 03/28/05 SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers © Copyright 2005 Sipex Corporation
17
Page 18
INDEX AREA
(D/2 X E1/2)
PACKAGE: 14 PIN NSOIC
D
Ø1
Ø
VIEW C
L2
L
L1
Gauge Plane
Ø
e
E/2
E1
E
E1/2
1
b
Seating Plane
TOP VIEW
14 Pin NSOIC JEDEC MO-012 (AB) Variation
SYMBOL
MIN NOM MAX
A 1.35 - 1.75
A1 0.1 - 0.25
A2 1.25 - 1.65
b 0.31 - 0.51
c 0.17 - 0.25
D
E
E1
e
8.65 BSC
6.00 BSC
3.90 BSC
1.27 BSC
L 0.4 - 1.27
L1
L2
1.04 REF
0.25 BSC
ø0º-8º
ø1 5º - 15º
Note: Dimensions in (mm)
B
B
A2
A1
Seating Plane
SIDE VIEW
SEE VIEW C
b
c
BASE METAL
A
SECTION B-B
WITH PLATING
Date: 03/28/05 SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers © Copyright 2005 Sipex Corporation
18
Page 19
ORDERING INFORMATION
Model Temperature Range Package
SP3070EEN .................................................... -40˚C to +85˚C ..................................................... 14-pin NSOIC
SP3070EEN/TR .............................................. -40˚C to +85˚C ..................................................... 14-pin NSOIC
SP3070EMN .................................................. -40˚C to +125˚C .................................................... 14-pin NSOIC
SP3070EMN/TR ............................................ -40˚C to +125˚C .................................................... 14-pin NSOIC
SP3071EEN .................................................... -40˚C to +85˚C ....................................................... 8-pin NSOIC
SP3071EEN/TR .............................................. -40˚C to +85˚C ....................................................... 8-pin NSOIC
SP3071EMN .................................................. -40˚C to +125˚C ...................................................... 8-pin NSOIC
SP3071EMN/TR ............................................ -40˚C to +125˚C ...................................................... 8-pin NSOIC
SP3072EEN .................................................... -40˚C to +85˚C ....................................................... 8-pin NSOIC
SP3072EEN/TR .............................................. -40˚C to +85˚C ....................................................... 8-pin NSOIC
SP3072EMN .................................................. -40˚C to +125˚C ...................................................... 8-pin NSOIC
SP3072EMN/TR ............................................ -40˚C to +125˚C ...................................................... 8-pin NSOIC
SP3073EEN .................................................... -40˚C to +85˚C ..................................................... 14-pin NSOIC
SP3073EEN/TR .............................................. -40˚C to +85˚C ..................................................... 14-pin NSOIC
SP3073EMN .................................................. -40˚C to +125˚C .................................................... 14-pin NSOIC
SP3073EMN/TR ............................................ -40˚C to +125˚C .................................................... 14-pin NSOIC
SP3074EEN .................................................... -40˚C to +85˚C ....................................................... 8-pin NSOIC
SP3074EEN/TR .............................................. -40˚C to +85˚C ....................................................... 8-pin NSOIC
SP3074EMN .................................................. -40˚C to +125˚C ...................................................... 8-pin NSOIC
SP3074EMN/TR ............................................ -40˚C to +125˚C ...................................................... 8-pin NSOIC
SP3075EEN .................................................... -40˚C to +85˚C ....................................................... 8-pin NSOIC
SP3075EEN/TR .............................................. -40˚C to +85˚C ....................................................... 8-pin NSOIC
SP3075EMN .................................................. -40˚C to +125˚C ...................................................... 8-pin NSOIC
SP3075EMN/TR ............................................ -40˚C to +125˚C ...................................................... 8-pin NSOIC
SP3076EEN .................................................... -40˚C to +85˚C ..................................................... 14-pin NSOIC
SP3076EEN/TR .............................................. -40˚C to +85˚C ..................................................... 14-pin NSOIC
SP3076EMN .................................................. -40˚C to +125˚C .................................................... 14-pin NSOIC
SP3076EMN/TR ............................................ -40˚C to +125˚C .................................................... 14-pin NSOIC
SP3077EEN .................................................... -40˚C to +85˚C ....................................................... 8-pin NSOIC
SP3077EEN/TR .............................................. -40˚C to +85˚C ....................................................... 8-pin NSOIC
SP3077EMN .................................................. -40˚C to +125˚C ...................................................... 8-pin NSOIC
SP3077EMN/TR ............................................ -40˚C to +125˚C ...................................................... 8-pin NSOIC
SP3078EEN .................................................... -40˚C to +85˚C ....................................................... 8-pin NSOIC
SP3078EEN/TR .............................................. -40˚C to +85˚C ....................................................... 8-pin NSOIC
SP3078EMN .................................................. -40˚C to +125˚C ...................................................... 8-pin NSOIC
SP3078EMN/TR ............................................ -40˚C to +125˚C ...................................................... 8-pin NSOIC
For availability of PDIP or other packaging contact factory.
Available in lead free packaging. To order add “-L” suffix to part number.
Example: SP3074EEN/TR = standard; SP3074EEN-L/TR = lead free
/TR = Tape and Reel
Pack quantity is 2,500 for NSOIC.
CLICK HERE TO ORDER SAMPLES
Sipex Corporation
Corporation
ANALOG EXCELLENCE
Date: 03/28/05 SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers © Copyright 2005 Sipex Corporation
Headquarters and
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
19
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