Datasheet SP3222EB, SP3232EB Datasheet (EXAR)

Page 1
®
SP3222EB/3232EB
True +3.0V to +5.5V RS-232 Transceivers
Meets true EIA/TIA-232-F Standards from a +3.0V to +5.5V power supply
250kbps Transmission Rate Under Load
Active (SP3222EB)
Interoperable with RS-232 down to +2.7V power source
Enhanced ESD Specifications:
±15kV Human Body Model ±15kV IEC1000-4-2 Air Discharge ±8kV IEC1000-4-2 Contact Discharge
DESCRIPTION
The SP3222EB/3232EB series is an RS-232 transceiver solution intended for portable or hand-held applications such as notebook or palmtop computers. The SP3222EB/3232EB series has a high-efficiency, charge-pump power supply that requires only 0.1µF capacitors in 3.3V operation. This charge pump allows the SP3222EB/3232EB series to deliver true RS- 232 performance from a single power supply ranging from +3.0V to +5.5V. The SP3222EB/ 3232EB are 2-driver/2-receiver devices. This series is ideal for portable or hand-held applications such as notebook or palmtop computers. The ESD tolerance of the SP3222EB/ 3232EB devices are over ±15kV for both Human Body Model and IEC1000-4-2 Air discharge test methods. The SP3222EB device has a low-power shutdown mode where the devices' driver outputs and charge pumps are disabled. During shutdown, the supply current falls to less than 1µA.
SELECTION TABLE
LEDOMseilppuSrewoP
BE2223PS BE2323PS
Rev. A Date:12/11/03 SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers © Copyright 2003 Sipex Corporation
V5.5+otV0.3+224seYseY02,81 V5.5+otV0.3+224oNoN61
232-SR srevirD
232-SR
srevieceR
lanretxE
stnenopmoC
nwodtuhS
LTT
etatS-3
fo.oN
sniP
1
Page 2
ABSOLUTE MAXIMUM RATINGS
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 and cause permanent damage to the device.
VCC...................................................... -0.3V to +6.0V
V+ (NOTE 1) ...................................... -0.3V to +7.0V
V- (NOTE 1) ....................................... +0.3V to -7.0V
V+ + |V-| (NOTE 1)...........................................+13V
ICC (DC VCC or GND current)......................... ±100mA
Input Voltages
TxIN, EN ............................................ -0.3V to +6.0V
Output Voltages
TxOUT ........................................................... ±13.2V
RxOUT ..................................... -0.3V to (VCC + 0.3V)
Short-Circuit Duration
TxOUT .................................................... Continuous
Storage Temperature ...................... -65°C to +150°C
Power Dissipation Per Package
20-pin SSOP (derate 9.25mW/oC above +70oC)........ 750mW
18-pin PDIP (derate 15.2mW/
18-pin SOIC (derate 15.7mW/oC above +70oC) ....... 1260mW
20-pin TSSOP (derate 11.1mW/oC above +70oC)...... 890mW
16-pin SSOP (derate 9.69mW/oC above +70oC)........ 775mW
16-pin PDIP (derate 14.3mW/oC above +70oC) .......1150mW
16-pin Wide SOIC (derate 11.2mW/oC above +70oC) .... 900mW
16-pin TSSOP (derate 10.5mW/oC above +70oC)...... 850mW
16-pin nSOIC (derate 13.57mW/°C above +70°C) ...... 1086mW
o
C above +70oC) .......1220mW
RxIN ..................................................................±25V
NOTE 1: V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V. NOTE 2: Driver Input hysteresis is typically 250mV.
SPECIFICATIONS
Unless otherwise noted, the following specifications apply for VCC = +3.0V to +5.5V with T C4=0.1µF
PARAMETER MIN. TYP. MAX. UNITS CONDITIONS DC CHARACTERISTICS
Supply Current 0.3 1.0 mA no load, T
TxIN = VCC or GND
Shutdown Supply Current 1.0 10 µA SHDN = GND, T
VCC = +3.3V, TxIN = VCC or GND
LOGIC INPUTS AND RECEIVER OUTPUTS
Input Logic Threshold LOW GND 0.8 V TxIN, EN, SHDN, Note 2 Input Logic Threshold HIGH 2.0 V
2.4 V VCC = 5.0V, Note 2
CC
VVCC = 3.3V, Note 2
Input Leakage Current ±0.01 ±1.0 µA TxIN, EN, SHDN, T
VIN = 0V to V Output Leakage Current ±0.05 ±10 µA receivers disabled, V Output Voltage LOW 0.4 V I Output Voltage HIGH VCC-0.6 VCC-0.1 V I
OUT OUT
DRIVER OUTPUTS
Output Voltage Swing ±5.0 ±5.4 V 3k load to ground at all driver
outputs, T Output Resistance 300 VCC = V+ = V- = 0V, T Output Short-Circuit Current ±35 ±60 mA V Output Leakage Current ±25 µAV
OUT OUT
or 3.0V to 5.5V, drivers disabled
= T
AMB
MIN
= +25°C, VCC = 3.3V,
AMB
AMB
CC
= 1.6mA = -1.0mA
= +25°C
AMB
= 0V = ±12V,VCC= 0V,
to T
MAX
= +25°C,
= +25°C,
AMB
OUT
OUT
= 0V to V
= +2V
, C1 to
CC
Rev. A Date:12/11/03 SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers © Copyright 2003 Sipex Corporation
2
Page 3
SPECIFICATIONS (continued)
Unless otherwise noted, the following specifications apply for VCC = +3.0V to +5.5V with T C
=0.1µF. Typical Values apply at VCC = +3.3V or +5.5V and T
4
RETEMARAP.NIM.PYT.XAMSTINUSNOITIDNOC
STUPNIREVIECER
egnaRegatloVtupnI52-52+V
AMB
= 25oC.
AMB
= T
MIN
to T
MAX
, C1 to
WOLdlohserhTtupnI6.0
HGIHdlohserhTtupnI5.1
2.1
8.0
5.1
8.1
4.2
4.2
VV
CC
V
CC
VVCCV3.3=
V
CC
siseretsyHtupnI3.0V
ecnatsiseRtupnI357k
SCITSIRETCARAHCGNIMIT
etaRataDmumixaM052spbkR
yaleDnoitagaporPrevieceR51.0
µs
51.0
k3= C,
L
t
LHP
t
HLP
emiTelbanEtuptuOrevieceR002sn
emiTelbasiDtuptuOrevieceR002sn
wekSrevirD001snt|
wekSrevieceR05snt|
etaRwelSnoigeR-noitisnarT03/V µsV
LHP
LHP
CC
V3.3= V0.5=
V0.5=
L
C,TUOxRotNIxR, C,TUOxRotNIxR,
t-
T,|
HLP
t-
|
HLP
52=oC
BMA
R,V3.3=
K3= T,
L
Fp051=
L
Fp051=
L
52=o,C
BMA
gnihctiwsrevirdeno,Fp0001=
V0.3+otV0.3-morfnekatstnemerusaem
V0.3-otV0.3+ro
Rev. A Date:12/11/03 SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers © Copyright 2003 Sipex Corporation
3
Page 4
TYPICAL PERFORMANCE CHARACTERISTICS
Unless otherwise noted, the following performance characteristics apply for VCC = +3.3V, 250kbps data rates, all drivers loaded with 3k, 0.1µF charge pump capacitors, and T
= +25°C.
AMB
6
4
2
0
-2
Voltage (V)
-4
Transmitter Output
-6 0 1000 2000 3000 4000 5000
TxOUT +
TxOUT -
T1 at 250Kbps T2 at 15.6Kbps All TX loaded 3K // CLoad
Load Capacitance (pF)
Figure 1. Transmitter Output Voltage vs Load Capacitance.
35
T1 at Full Data Rate
30
T2 at 1/16 Data Rate All TX loaded 3K // CLoad
25
20
15
10
Supply Current (mA)
5
0
0 1000 2000 3000 4000 5000
Load Capacitance (pF)
250Kbps
125Kbps
20Kbps
30
25
20
15
10
Slew rate (V/µs)
5
0
0 500 1000 2000 3000 4000 5000
T1 at 250Kbps T2 at 15.6Kbps All TX loaded 3K // CLoad
Load Capacitance (pF)
Figure 2. Slew Rate vs Load Capacitance.
16
14
12
10
8
6
1 Transmitter at 250Kbps 1 Transmitter at 15.6Kbps
4
Supply Current (mA)
All transmitters loaded with 3K // 1000pf
2
0
2.7 3 3.5 4 4.5 5
Supply Voltage (V)
- Slew
+ Slew
Figure 3. Supply Current vs Load Capacitance when
Figure 4. Supply Current vs Supply Voltage.
Transmitting Data.
6
4
2
0
Voltage (V)
-2
Transmitter Output
-4
-6
2.7 3 3.5 4 4.5 5
TxOUT +
T1 at 250Kbps T2 at 15.6Kbps All TX loaded 3K // 1000 pF
TxOUT -
Supply Voltage (V)
Figure 5. Transmitter Output Voltage vs Supply Voltage.
Rev. A Date:12/11/03 SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers © Copyright 2003 Sipex Corporation
4
Page 5
REBMUNNIP
EMANNOITCNUF
NE
.noitarepolamronrofWOLcigolylppA.elbanErevieceR
.)etatsZ-hgih(stuptuoreviecerehtelbasidotHGIHcigolylppA
11 -
BE2223PS
OS/PID
POSS
POSST
+1C.roticapacpmup-egrahcrelbuodegatlovehtfolanimretevitisoP 22 1
+V.pmupegrahcehtybdetarenegV5.5+ 33 2
-1C.roticapacpmup-egrahcrelbuodegatlovehtfolanimretevitageN 44 3
+2C.roticapacpmup-egrahcgnitrevniehtfolanimretevitisoP 55 4
-2C.roticapacpmup-egrahcgnitrevniehtfolanimretevitageN 66 5
-V.pmupegrahcehtybdetarenegV5.5- 77 6
TUO1T.tuptuorevird232-SR 517141
TUO2T.tuptuorevird232-SR 88 7 NI1R.tupnireviecer232-SR 416131 NI2R.tupnireviecer232-SR 99 8
TUO1R.tuptuoreveicerSOMC/LTT 315121
TUO2R.tuptuoreveicerSOMC/LTT 01019 NI1T.tupnirevirdSOMC/LTT 213111 NI2T.tupnirevirdSOMC/LTT 112101 DNG.dnuorG 618151
V
CC
egatlovylppusV5.5+otV0.3+ 719161
.noitarepoecivedlamronrofHGIHevirD.tupnIlortnoCnwodtuhS
NDHS
-noehtdna)tuptuoZ-hgih(srevirdehtnwodtuhsotWOLevirD
8102-
.ylppusrewopdraob
.C.N.tcennoCoN -41,11-
Table 1. Device Pin Description
BE2323PS
Rev. A Date:12/11/03 SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers © Copyright 2003 Sipex Corporation
5
Page 6
EN
1 2
C1+
3
V+
C1-
4
SP3222EB
5
C2+
6
C2-
V-
7
T2OUT
R2IN
R2OUT
Figure 6. Pinout Configurations for the SP3222EB
8
9
10
SSOP/TSSOP
20 19 18 17
16
15
14
13 12 11
SHDN
V GND T1OUT
R1IN R1OUT
N.C.
T1IN
T2IN
N.C.
CC
EN
C1+
V+
C1-
C2+
C2-
V-
T2OUT
R2IN
1 2 3 4 5 6
7 8
9
SP3222EB
DIP/SO
18 17 16 15
14
13
12
11
10
SHDN
V
CC
GND T1OUT R1IN R1OUT
T1IN
T2IN R2OUT
16 15
14 13 12
11
10
9
GND T1OUT
R1IN R1OUT
T1IN
T2IN
R2OUT
V+
V-
1 2 3 4 5
6 7 8
SP3232EB
6
C1+
C1-
C2+
C2-
T2OUT
R2IN
Figure 7. Pinout Configuration for the SP3232EB
Rev. A Date:12/11/03 SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers © Copyright 2003 Sipex Corporation
CC
V
Page 7
C5
C1
C2
LOGIC
INPUTS
+
+
+
0.1µF
0.1µF
0.1µF
V
CC
19
CC
C1+
C1­C2+
C2-
T1IN T2IN
V
SP3222EB
SSOP
TSSOP
T1OUT T2OUT
3
V+
V-
+
0.1µF
*C3
7
0.1µF
C4
+
17
RS-232
8
OUTPUTS
2
4 5
6
13 12
C5
C1
C2
LOGIC
INPUTS
+
+
+
0.1µF
0.1µF
0.1µF
2
4 5
6
12 11
C1+
C1­C2+
C2-
T1IN T2IN
V
CC
17
CC
V
SP3222EB
DIP/SO
T1OUT T2OUT
3
V+
V-
+
0.1µF
*C3
7
0.1µF
C4
+
15
RS-232
8
OUTPUTS
R1IN
R2IN
SHDN
16
9
20
*can be returned to either V
LOGIC
OUTPUTS
15
10
R1OUT
R2OUT
1
EN
5k
5k
GND
18
Figure 8. SP3222EB Typical Operating Circuits
+
0.1µF
C5
0.1µF
0.1µF
1
3 4
5
11 10
C1
C2
LOGIC
INPUTS
+
+
CC
C1+
C1-
C2+
C2-
T1IN
T2IN
RS-232 INPUTS
or GND
SP3232EB
V
CC
16
V
CC
LOGIC
OUTPUTS
T1OUT T2OUT
V+
13
R1OUT
10
R2OUT
1
EN
2
*C3
6
V-
C4
14
RS-232
7
OUTPUTS
+
+
5k
5k
GND
16
0.1µF
0.1µF
R1IN
R2IN
SHDN
14
RS-232 INPUTS
9
18
*can be returned to either VCC or GND
R1IN
R2IN
13
RS-232
8
INPUTS
LOGIC
OUTPUTS
12
9
R1OUT
5k
R2OUT
5k
GND
15
*can be returned to either VCC or GND
Figure 9. SP3232EB Typical Operating Circuit
Rev. A Date:12/11/03 SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers © Copyright 2003 Sipex Corporation
7
Page 8
DESCRIPTION
The SP3222EB/3232EB transceivers meet the EIA/TIA-232 and V.28/V.24 communication protocols and can be implemented in battery­powered, portable, or hand-held applications such as notebook or palmtop computers. The SP3222EB/3232EB devices all feature Sipex's proprietary on-board charge pump circuitry that generates 2 x V
for RS-232 voltage levels
CC
from a single +3.0V to +5.5V power supply. This series is ideal for +3.3V-only systems, mixed +3.3V to +5.5V systems, or +5.0V-only systems that require true RS-232 performance. The SP3222EB/3232EB series have drivers that operate at a typical data rate of 250kbps fully loaded.
The SP3222EB and SP3232EB are 2-driver/2- receiver devices ideal for portable or hand-held applications. The SP3222EB features a 1µA shutdown mode that reduces power consump­tion and extends battery life in portable systems. Its receivers remain active in shutdown mode, allowing external devices such as modems to be monitored using only 1µA supply current.
THEORY OF OPERATION
The SP3222EB/3232EB series are made up of three basic circuit blocks: 1. Drivers, 2. Receivers, and 3. the Sipex proprietary charge pump.
Drivers
The drivers are inverting level transmitters that convert TTL or CMOS logic levels to ±5.0V EIA/TIA-232 levels inverted relative to the in­put logic levels. Typically, the RS-232 output voltage swing is ±5.5V with no load and at least ±5V minimum fully loaded. The driver outputs are protected against infinite short-circuits to ground without degradation in reliability. Driver outputs will meet EIA/TIA-562 levels of ±3.7V with supply voltages as low as 2.7V.
The drivers can guarantee a data rate of 250kbps fully loaded with 3Kin parallel with 1000pF, ensuring compatibility with PC-to-PC commu­nication software.
The slew rate of the driver output is internally limited to a maximum of 30V/µs in order to meet the EIA standards (EIA RS-232D 2.1.7, Paragraph 5). The transition of the loaded output from HIGH to LOW also meets the monotonicity requirements of the standard.
Figure 10 shows a loopback test circuit used to the RS-232 drivers. Figure 11 shows the test results of the loopback circuit with all drivers active at 120kbps with RS-232 loads in parallel with 1000pF capacitors. Figure 12 shows the test results where one driver was active at 250kbps and all drivers loaded with an RS-232 receiver in parallel with a 1000pF capacitor. A solid RS-232 data transmission rate of 250kbps provides compatibility with many designs in personal computer peripherals and LAN appli­cations.
The SP3222EB driver's output stages are turned off (tri-state) when the device is in shutdown mode. When the power is off, the SP3222EB device permits the outputs to be driven up to ±12V. The driver's inputs do not have pull-up resistors. Designers should connect unused in­puts to V
or GND.
CC
In the shutdown mode, the supply current falls to less than 1µA, where SHDN = LOW. When the SP3222EB device is shut down, the device's driver outputs are disabled (tri-stated) and the charge pumps are turned off with V+ pulled down to VCC and V- pulled to GND. The time required to exit shutdown is typically 100µs. Connect SHDN to VCC if the shutdown mode is not used.
Rev. A Date:12/11/03 SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers © Copyright 2003 Sipex Corporation
8
Page 9
C5
C1
C2
LOGIC
INPUTS
+
+
+
0.1µF
0.1µF
0.1µF
C1+
C1-
C2+
C2­TxIN
V
CC
V
CC
SP3222EB SP3232EB
V+
TxOUT
+
0.1µF
C3
V-
0.1µF
C4
+
LOGIC
OUTPUTS
RxOUT
EN*
GND
Figure 10. SP3222EB/3232EB Driver Loopback Test Circuit
RxIN
5k
*SHDN
* SP3222EB only
V
CC
1000pF
Figure 11. Driver Loopback Test Results at 120kbps
Rev. A Date:12/11/03 SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers © Copyright 2003 Sipex Corporation
Figure 12. Driver Loopback Test Results at 250 kbps
9
Page 10
Receivers
The receivers convert EIA/TIA-232 levels to TTL or CMOS logic output levels. The SP3222EB receivers have an inverting tri-state output. These receiver outputs (RxOUT) are tri­stated when the enable control EN = HIGH. In the shutdown mode, the receivers can be active or inactive. EN has no effect on TxOUT. The truth table logic of the SP3222EB driver and receiver outputs can be found in Table 2.
Since receiver input is usually from a transmis­sion line where long cable lengths and system interference can degrade the signal, the inputs have a typical hysteresis margin of 300mV. This ensures that the receiver is virtually immune to noisy transmission lines. Should an input be left unconnected, a 5kΩ pulldown resistor to ground will commit the output of the receiver to a HIGH state.
Charge Pump
The charge pump is a Sipex–patented design (5,306,954) and uses a unique approach com­pared to older less–efficient designs. The charge pump still requires four external capacitors, but uses a four–phase voltage shifting technique to attain symmetrical 5.5V power supplies. The internal power supply consists of a regulated dual charge pump that provides output voltages
5.5V regardless of the input voltage (VCC) over the +3.0V to +5.5V range.
In most circumstances, decoupling the power supply can be achieved adequately using a 0.1µF bypass capacitor at C5 (refer to Figures 8 and 9).
NDHSNETUOxTTUOxR
00 etats-irTevitcA 01 etats-irTetats-irT
In applications that are sensitive to power-sup­ply noise, decouple VCC to ground with a capaci­tor of the same value as charge-pump capacitor C1. Physically connect bypass capacitors as close to the IC as possible.
The charge pumps operate in a discontinuous mode using an internal oscillator. If the output voltages are less than a magnitude of 5.5V, the charge pumps are enabled. If the output voltage exceed a magnitude of 5.5V, the charge pumps are disabled. This oscillator controls the four phases of the voltage shifting. A description of each phase follows.
Phase 1
— VSS charge storage — During this phase of the clock cycle, the positive side of capacitors C1 and C2 are initially charged to VCC. C then switched to GND and the charge in C transferred to C
. Since C
2
+
is connected to
2
VCC, the voltage potential across capacitor C
+
is
l
is
1
2
is now 2 times VCC.
Phase 2
— VSS transfer — Phase two of the clock con­nects the negative terminal of C2 to the V storage capacitor and the positive terminal of C to GND. This transfers a negative generated voltage to C3. This generated voltage is regu­lated to a minimum voltage of -5.5V. Simulta­neous with the transfer of the voltage to C3, the positive side of capacitor C1 is switched to V
CC
and the negative side is connected to GND.
Phase 3
— VDD charge storage — The third phase of the clock is identical to the first phase — the charge transferred in C1 produces –VCC in the negative terminal of C1, which is applied to the negative side of capacitor C2. Since C
+
is at VCC, the
2
voltage potential across C2 is 2 times VCC.
SS
2
10 evitcAevitcA
Phase 4
— VDD transfer — The fourth phase of the clock
11 evitcAetats-irT
Table 2. SP3222EB Truth Table Logic for Shutdown and Enable Control
Rev. A Date:12/11/03 SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers © Copyright 2003 Sipex Corporation
connects the negative terminal of C2 to GND, and transfers this positive generated voltage across C2 to C4, the VDD storage capacitor.
10
Page 11
This voltage is regulated to +5.5V. At this voltage, the internal oscillator is disabled. Si­multaneous with the transfer of the voltage to C4, the positive side of capacitor C1 is switched to VCC and the negative side is connected to GND, allowing the charge pump cycle to begin again. The charge pump cycle will continue as long as the operational conditions for the inter­nal oscillator are present.
Since both V+ and V– are separately generated from VCC; in a no–load condition V+ and V– will be symmetrical. Older charge pump approaches that generate V– from V+ will show a decrease in the magnitude of V– compared to V+ due to the inherent inefficiencies in the design.
The clock rate for the charge pump typically operates at 250kHz. The external capacitors can be as low as 0.1µF with a 16V breakdown voltage rating.
ESD Tolerance
The SP3222EB/3232EB series incorporates ruggedized ESD cells on all driver output and receiver input pins. The ESD structure is improved over our previous family for more rugged applications and environments sensitive to electrostatic discharges and associated transients. The improved ESD tolerance is at least ±15kV without damage nor latch-up.
There are different methods of ESD testing applied:
a) MIL-STD-883, Method 3015.7 b) IEC1000-4-2 Air-Discharge c) IEC1000-4-2 Direct Contact
The Human Body Model has been the generally accepted ESD testing method for semiconduc­tors. This method is also specified in MIL-STD­883, Method 3015.7 for ESD testing. The premise of this ESD test is to simulate the human body’s potential to store electrostatic energy and discharge it to an integrated circuit.
The simulation is performed by using a test model as shown in Figure 18. This method will test the IC’s capability to withstand an ESD transient during normal handling such as in manufacturing areas where the ICs tend to be handled frequently.
The IEC-1000-4-2, formerly IEC801-2, is generally used for testing ESD on equipment and systems. For system manufacturers, they must guarantee a certain amount of ESD protection since the system itself is exposed to the outside environment and human presence. The premise with IEC1000-4-2 is that the system is required to withstand an amount of static electricity when ESD is applied to points and surfaces of the equipment that are accessible to personnel during normal usage. The transceiver IC receives most of the ESD current when the ESD source is applied to the connector pins. The test circuit for IEC1000-4-2 is shown on Figure 19. There are two methods within IEC1000-4-2, the Air Discharge method and the Contact Discharge method.
With the Air Discharge Method, an ESD voltage is applied to the equipment under test (EUT) through air. This simulates an electrically charged person ready to connect a cable onto the rear of the system only to find an unpleasant zap just before the person touches the back panel. The high energy potential on the person discharges through an arcing path to the rear panel of the system before he or she even touches the system. This energy, whether discharged directly or through air, is predominantly a function of the discharge current rather than the discharge voltage. Variables with an air discharge such as approach speed of the object carrying the ESD potential to the system and humidity will tend to change the discharge current. For example, the rise time of the discharge current varies with the approach speed.
Rev. A Date:12/11/03 SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers © Copyright 2003 Sipex Corporation
11
Page 12
VCC = +5V
VCC = +5V
–10V
V
SS
Storage Capacitor
V
DD
Storage Capacitor
C
1
C
2
C
3
C
4
+
+
++
VCC = +5V
–5V
+5V
–5V
V
SS
Storage Capacitor
V
DD
Storage Capacitor
C
1
C
2
C
3
C
4
+
+
++
Figure 13. Charge Pump — Phase 1
Figure 14. Charge Pump — Phase 2
a) C
GND GND
b) C2-
+6V
1
2
+5V
++
C
1
C
2
–5V –5V
C
4
+
Storage Capacitor
V
DD
+
V
C
3
Storage Capacitor
SS
T[]
2+
T
-6V Ch1 2.00V Ch2 2.00V M 1.00µs Ch1 5.48V
T
Figure 15. Charge Pump Waveforms
Figure 16. Charge Pump — Phase 3
VCC = +5V
+10V
++
Figure 17. Charge Pump — Phase 4
Rev. A Date:12/11/03 SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers © Copyright 2003 Sipex Corporation
C
1
12
C
2
C
4
+
Storage Capacitor
V
DD
+
V
C
3
Storage Capacitor
SS
Page 13
R
R
R
C
C
R
S
S
SW1
SW1
DC Power Source
Figure 18. ESD Test Circuit for Human Body Model
The Contact Discharge Method applies the ESD current directly to the EUT. This method was devised to reduce the unpredictability of the ESD arc. The discharge current rise time is constant since the energy is directly transferred without the air-gap arc. In situations such as hand held systems, the ESD charge can be directly discharged to the equipment from a person already holding the equipment. The current is transferred on to the keypad or the serial port of the equipment directly and then travels through the PCB and finally to the IC.
SW2
SW2
C
C
S
S
Device Under Test
The circuit models in Figures 18 and 19 represent the typical ESD testing circuits used for all three methods. The CS is initially charged with the DC power supply when the first switch (SW1) is on. Now that the capacitor is charged, the second switch (SW2) is on while SW1 switches off. The voltage stored in the capacitor is then applied through RS, the current limiting resistor, onto the device under test (DUT). In ESD tests, the SW2 switch is pulsed so that the device under test receives a duration of voltage.
Contact-Discharge Module
Contact-Discharge Module
R
R
R
C
C
SW1
SW1
DC Power Source
Figure 19. ESD Test Circuit for IEC1000-4-2
Rev. A Date:12/11/03 SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers © Copyright 2003 Sipex Corporation
C
R
S
S
C
S
S
and RV add up to 330 for IEC1000-4-2.
R
RS and RV add up to 330 for IEC1000-4-2.
S
R
R
V
V
SW2
SW2
Device Under Test
13
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For the Human Body Model, the current limiting resistor (RS) and the source capacitor (CS) are 1.5kan 100pF, respectively. For
I
30A
IEC-1000-4-2, the current limiting resistor (RS) and the source capacitor (CS) are 330Ω an 150pF, respectively.
15A
The higher CS value and lower RS value in the IEC1000-4-2 model are more stringent than the Human Body Model. The larger storage capacitor injects a higher voltage to the test point when SW2
0A
is switched on. The lower current limiting resistor increases the current charge onto the test point.
t=0ns
Figure 20. ESD Test Waveform for IEC1000-4-2
t
t=30ns
Device Pin Human Body IEC1000-4-2
Tested Model Air Discharge Direct Contact Level
Driver Outputs ±15kV ±15kV ±8kV 4 Receiver Inputs ±15kV ±15kV ±8kV 4
Table 3. Transceiver ESD Tolerance Levels
Rev. A Date:12/11/03 SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers © Copyright 2003 Sipex Corporation
14
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PACKAGE: PLASTIC SHRINK
SMALL OUTLINE (SSOP)
EH
D
A
Ø
Be
A1
DIMENSIONS (Inches)
Minimum/Maximum
(mm)
A
A1
B
D
E
e
H
L
Ø
16–PIN
0.068/0.078 (1.73/1.99)
0.002/0.008 (0.05/0.21)
0.010/0.015 (0.25/0.38)
0.239/0.249 (6.07/6.33)
0.205/0.212 (5.20/5.38)
0.0256 BSC (0.65 BSC)
0.301/0.311 (7.65/7.90)
0.022/0.037 (0.55/0.95)
0°/8°
(0°/8°)
20–PIN
0.068/0.078 (1.73/1.99)
0.002/0.008 (0.05/0.21)
0.010/0.015 (0.25/0.38)
0.278/0.289 (7.07/7.33)
0.205/0.212 (5.20/5.38)
0.0256 BSC (0.65 BSC)
0.301/0.311 (7.65/7.90)
0.022/0.037 (0.55/0.95)
0°/8°
(0°/8°)
L
Rev. A Date:12/11/03 SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers © Copyright 2003 Sipex Corporation
15
Page 16
D1 = 0.005" min.
(0.127 min.)
D
e = 0.100 BSC
(2.540 BSC)
B1
B
ALTERNATE
END PINS
(BOTH ENDS)
PACKAGE: PLASTIC
DUAL–IN–LINE (NARROW)
E1
E
A1 = 0.015" min.
(0.381min.)
A = 0.210" max.
(5.334 max).
A2
L
C
Ø
eA = 0.300 BSC
(7.620 BSC)
DIMENSIONS (Inches)
Minimum/Maximum
(mm) A2
B
B1
C
D
E
E1
L
Ø
16–PIN
0.115/0.195
(2.921/4.953)
0.014/0.022
(0.356/0.559)
0.045/0.070
(1.143/1.778)
0.008/0.014
(0.203/0.356)
0.780/0.800
(19.812/20.320)
0.300/0.325
(7.620/8.255)
0.240/0.280
(6.096/7.112)
0.115/0.150
(2.921/3.810)
0°/ 15°
(0°/15°)
18–PIN
0.115/0.195
(2.921/4.953)
0.014/0.022
(0.356/0.559)
0.045/0.070
(1.143/1.778)
0.008/0.014
(0.203/0.356)
0.880/0.920
(22.352/23.368)
0.300/0.325
(7.620/8.255)
0.240/0.280
(6.096/7.112)
0.115/0.150
(2.921/3.810)
0°/ 15°
(0°/15°)
Rev. A Date:12/11/03 SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers © Copyright 2003 Sipex Corporation
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PACKAGE: PLASTIC
SMALL OUTLINE (SOIC) (WIDE)
EH
D
A
Ø
Be
A1
DIMENSIONS (Inches)
Minimum/Maximum
(mm) A
A1
B
D
E
e
H
L
Ø
16–PIN
0.090/0.104
(2.29/2.649)
0.004/0.012
(0.102/0.300)
0.013/0.020
(0.330/0.508)
0.398/0.413
(10.10/10.49)
0.291/0.299
(7.402/7.600)
0.050 BSC
(1.270 BSC)
0.394/0.419
(10.00/10.64)
0.016/0.050
(0.406/1.270)
0°/8°
(0°/8°)
18–PIN
0.090/0.104
(2.29/2.649))
0.004/0.012
(0.102/0.300)
0.013/0.020
(0.330/0.508)
0.447/0.463
(11.35/11.74)
0.291/0.299
(7.402/7.600)
0.050 BSC
(1.270 BSC)
0.394/0.419
(10.00/10.64)
0.016/0.050
(0.406/1.270)
0°/8°
(0°/8°)
L
Rev. A Date:12/11/03 SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers © Copyright 2003 Sipex Corporation
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PACKAGE: PLASTIC
SMALL OUTLINE (SOIC) (NARROW)
EH
h x 45°
D
A
Ø
Be
A1
L
DIMENSIONS (Inches)
Minimum/Maximum
(mm) A
A1
B
D
E
e
H
h
L
Ø
16–PIN
0.053/0.069
(1.346/1.748)
0.004/0.010
(0.102/0.249)
0.013/0.020
(0.330/0.508)
0.386/0.394
(9.802/10.000)
0.150/0.157
(3.802/3.988)
0.050 BSC
(1.270 BSC)
0.228/0.244
(5.801/6.198)
0.010/0.020
(0.254/0.498)
0.016/0.050
(0.406/1.270)
0°/8°
(0°/8°)
Rev. A Date:12/11/03 SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers © Copyright 2003 Sipex Corporation
18
Page 19
PACKAGE: PLASTIC THIN
SMALL OUTLINE (TSSOP)
Symbol 14 Lead 16 Lead 20 Lead 24 Lead 28 Lead 38 Lead
0.126 BSC (3.2 BSC)
0.039 (1.0)
in inches (mm) Minimum/Maximum
DIMENSIONS
D 0.193/0.201 0.193/0.201 0.252/0.260 0.303/0.311 0.378/0.386 0.378/0.386
(4.90/5.10) (4.90/5.10) (6.40/6.60) (7.70/7.90) (9.60/9.80) (9.60/9.80)
e 0.026 BSC 0.026 BSC 0.026 BSC 0.026 BSC 0.026 BSC 0.020 BSC
(0.65 BSC) (0.65 BSC) (0.65 BSC) (0.65 BSC) (0.65 BSC) (0.50 BSC)
e
0.252 BSC (6.4 BSC)
1.0 OIA
0’-8’ 12’REF
e/2
0.039 (1.0)
D
0.169 (4.30)
0.177 (4.50)
0.033 (0.85)
0.037 (0.95)
0.043 (1.10) Max
0.007 (0.19)
0.012 (0.30)
Rev. A Date:12/11/03 SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers © Copyright 2003 Sipex Corporation
0.002 (0.05)
0.006 (0.15)
Gage Plane
0.010 (0.25)
(θ3)
(θ2)
0.008 (0.20)
1.0 REF
0.004 (0.09) Min
0.004 (0.09) Min
0.020 (0.50)
0.026 (0.75)
(θ1)
19
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ORDERING INFORMATION
Model Temperature Range Package Type
SP3222EBCA .......................................... 0˚C to +70˚C .......................................... 20-Pin SSOP
SP3222EBCP .......................................... 0˚C to +70˚C ............................................18-Pin PDIP
SP3222EBCT........................................... 0˚C to +70˚C ........................................ 18-Pin WSOIC
SP3222EBCY .......................................... 0˚C to +70˚C ........................................ 20-Pin TSSOP
SP3222EBEA.......................................... -40˚C to +85˚C ........................................ 20-Pin SSOP
SP3222EBEP.......................................... -40˚C to +85˚C .......................................... 18-Pin PDIP
SP3222EBET .......................................... -40˚C to +85˚C ...................................... 18-Pin WSOIC
SP3222EBEY.......................................... -40˚C to +85˚C ...................................... 20-Pin TSSOP
SP3232EBCA .......................................... 0˚C to +70˚C .......................................... 16-Pin SSOP
SP3232EBCP .......................................... 0˚C to +70˚C ............................................16-Pin PDIP
SP3232EBCT........................................... 0˚C to +70˚C ........................................ 16-Pin WSOIC
SP3232EBCN .......................................... 0˚C to +70˚C ......................................... 16-Pin nSOIC
SP3232EBCY .......................................... 0˚C to +70˚C ........................................ 16-Pin TSSOP
SP3232EBEA.......................................... -40˚C to +85˚C ........................................ 16-Pin SSOP
SP3232EBEP.......................................... -40˚C to +85˚C .......................................... 16-Pin PDIP
SP3232EBET .......................................... -40˚C to +85˚C ...................................... 16-Pin WSOIC
SP3232EBEN ......................................... -40˚C to +85˚C ....................................... 16-Pin nSOIC
SP3232EBEY.......................................... -40˚C to +85˚C ...................................... 16-Pin TSSOP
Please consult the factory for pricing and availability on a Tape-On-Reel option.
Corporation
SIGNAL PROCESSING EXCELLENCE
Sipex Corporation Headquarters and
Sales Office
233 South Hillview Drive Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600
Sales Office
22 Linnell Circle Billerica, MA 01821 TEL: (978) 667-8700 FAX: (978) 670-9001 e-mail: sales@sipex.com
Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others.
Rev. A Date:12/11/03 SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers © Copyright 2003 Sipex Corporation
20
Page 21
This datasheet has been download from:
www.datasheetcatalog.com
Datasheets for electronics components.
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