NSC DS3691N, DS3691MX, DS3691M Datasheet
DS1691A/DS3691
(RS-422/RS-423) Line Drivers with TRI-STATE
®
Outputs
General Description
The DS1691A/DS3691 are low power Schottky TTLlinedrivers designed to meet the requirements of EIA standards
RS-422 and RS-423. They feature 4 buffered outputs with
high source and sink current capability with internal short circuit protection. Amodecontrol input provides a choice of operation either as 4 single-ended line drivers or 2 differential
line drivers.Arisetimecontrolpinallows the use of an external capacitor to slow the rise time for suppression of near
end crosstalk to other receivers in the cable. Rise time capacitors are primarily intended for waveshaping output signals in the single-ended driver mode. Multipoint applications
in differential mode with waveshaping capacitors is not allowed.
With the mode select pin low, the DS1691A/DS3691 are
dual-differential line drivers with TRI-STATE outputs. They
feature
±
10V output common-mode range in TRI-STATE
mode and 0V output unbalance when operated with
±
5V
supply.
Features
n Dual RS-422 line driver with mode pin low, or quad
RS-423 line driver with mode pin high
n TRI-STATE outputs in RS-422 mode
n Short circuit protection for both source and sink outputs
n Outputs will not clamp line with power off or in
TRI-STATE
n 100Ω transmission line drive capability
n Low I
CC
and IEEpower consumption
RS-422: I
CC
=
9 mA/driver typ
RS-423: I
CC
=
4.5 mA/driver typ:
I
EE
=
2.5 mA/driver typ
n Low current PNP inputs compatible with TTL, MOS and
CMOS
n Pin compatible with AM26LS30
Connection Diagrams
Ordering Information
Order Number Package Type NS Package Number
DS3691M SO Package M16A
DS3691N Molded DIP N16E
For Complete Military Product Specifications, refer to the appropriate SMD or MDS.
DS1691AJ/883 Ceramic DIP J16A
TRI-STATE®is a registered trademarkof National Semiconductor Corporation.
With Mode Select LOW
(RS-422 Connection)
DS005783-1
Top View
With Mode Select HIGH
(RS-423 Connection)
DS005783-2
Top View
July 1998
DS1691A/DS3691 (RS-422/RS-423) Line Drivers with TRI-STATE Outputs
© 1998 National Semiconductor Corporation DS005783 www.national.com
Absolute Maximum Ratings (Note 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
V
CC
7V
V
EE
−7V
Maximum Power Dissipation (Note 1) at 25˚C
Cavity Package 1509 mW
Molded DIP Package 1476 mW
SO Package 1051 mW
Input Voltage 15V
Output Voltage (Power OFF)
±
15V
Storage Temperature −65˚C to + 150˚C
Lead Temperature
(Soldering, 4 seconds) 260˚C
Operating Conditions
Min Max Units
Supply Voltage
DS1691A
V
CC
4.5 5.5 V
V
EE
−4.5 −5.5 V
DS3691
V
CC
4.75 5.25 V
V
EE
−4.75 −5.25 V
Temperature (T
A
)
DS1691A −55 +125 ˚C
DS3691 0 +70 ˚C
Note 1: Derate cavity package 10.1 mW/˚C above 25˚C; derate molded DIP
package 11.9 mW/˚C above 25˚C. Derate SO package 8.41 mW/˚C above
25˚C.
DC Electrical Characteristics (Notes 3, 4, 5, 6)
Symbol Parameter Conditions Min Typ Max Units
RS-422 CONNECTION, V
EE
CONNECTION TO GROUND, MODE SELECT ≤ 0.8V
V
IH
High Level Input Voltage 2 V
V
IL
Low Level Input Voltage 0.8 V
I
IH
High Level Input Current V
IN
=
2.4V 1 40 µA
V
IN
≤ 15V 10 100 µA
I
IL
Low Level Input Current V
IN
=
0.4V −30 −200 µA
V
I
Input Clamp Voltage I
IN
=
−12 mA −1.5 V
V
O
Differential Output Voltage R
L
=
∞
V
IN
=
2V 3.6 6.0 V
V
O
V
A,B
V
IN
=
0.8V −3.6 −6.0 V
V
T
Differential Output Voltage R
L
=
100Ω V
IN
=
2V 2 2.4 V
V
T
V
A,B
VCC≥ 4.75V V
IN
=
0.8V −2 −2.4 V
V
OS,VOS
Common-Mode Offset R
L
=
100Ω 2.5 3 V
Voltage
|V
T
|−|VT| Difference in Differential R
L
=
100Ω 0.05 0.4 V
Output Voltage
|V
OS
|−|VOS| Difference in Common- R
L
=
100Ω 0.05 0.4 V
Mode Offset Voltage
V
SS
|VT−VT| R
L
=
100Ω,V
CC
≥ 4.75V 4.0 4.8 V
V
CMR
Output Voltage Common- V
DISABLE
=
2.4V
±
10 V
Mode Range
I
XA
Output Leakage Current V
CC
=
0V V
CMR
=
10V 100 µA
I
XB
Power OFF V
CMR
=
−10V −100 µA
I
OX
TRI-STATE Output Current V
CC
=
Max V
CMR
≤ 10V 100 µA
V
EE
=
0V and −5V V
CMR
≥ −10V −100 µA
I
SA
Output Short Circuit Current V
IN
=
0.4V V
OA
=
6V 80 150 mA
V
OB
=
0V −80 −150 mA
I
SB
Output Short Circuit Current V
IN
=
2.4V V
OA
=
0V −80 −150 mA
V
OB
=
6V 80 150 mA
I
CC
Supply Current 18 30 mA
www.national.com 2
AC Electrical Characteristics (Note 6)
T
A
=
25˚C
Symbol Parameter Conditions Min Typ Max Units
RS-422 CONNECTION, V
CC
=
5V, MODE SELECT=0.8V
t
r
Output Rise Time R
L
=
100Ω,C
L
=
500 pF
(Figure 1 )
120 200 ns
t
f
Output Fall Time R
L
=
100Ω,C
L
=
500 pF
(Figure 1 )
120 200 ns
t
PDH
Output Propagation Delay R
L
=
100Ω,C
L
=
500 pF
(Figure 1 )
120 200 ns
t
PDL
Output Propagation Delay R
L
=
100Ω,C
L
=
500 pF
(Figure 1 )
120 200 ns
t
PZL
TRI-STATE Delay R
L
=
450Ω,C
L
=
500 pF, C
C
=
0pF
(Figure 4 )
250 350 ns
t
PZH
TRI-STATE Delay R
L
=
450Ω,C
L
=
500 pF, C
C
=
0pF
(Figure 4 )
180 300 ns
t
PLZ
TRI-STATE Delay R
L
=
450Ω,C
L
=
500 pF, C
C
=
0pF
(Figure 4 )
180 300 ns
t
PHZ
TRI-STATE Delay R
L
=
450Ω,C
L
=
500 pF, C
C
=
0pF
(Figure 4 )
250 350 ns
DC Electrical Characteristics (Notes 3, 4, 5, 6)
Symbol Parameter Conditions Min Typ Max Units
RS-423 CONNECTION, |V
CC
|=|VEE|, MODE SELECT ≥ 2V
V
IH
High Level Input Voltage 2 V
V
IL
Low Level Input Voltage 0.8 V
I
IH
High Level Input Current V
IN
=
2.4V 1 40 µA
V
IN
≤ 15V 10 100 µA
I
IL
Low Level Input Current V
IN
=
0.4V −30 −200 µA
V
I
Input Clamp Voltage I
IN
=
−12 mA −1.5 V
V
O
Output Voltage R
L
=
∞
, (Note 7) V
IN
=
2V 4.0 4.4 6.0 V
V
O
VCC≥ 4.75V V
IN
=
0.4V −4.0 −4.4 −6.0 V
V
T
Output Voltage R
L
=
450Ω V
IN
=
2.4V 3.6 4.1 V
V
T
VCC≥ 4.75V V
IN
=
0.4V −3.6 −4.1 V
|V
T
|−|VT| Output Unbalance |VCC|=|VEE|=4.75V, R
L
=
450Ω 0.02 0.4 V
I
X
+
Output Leakage Power OFF V
CC
=
V
EE
=
0V V
O
=
6V 2 100 µA
I
X
−
Output Leakage Power OFF V
CC
=
V
EE
=
0V V
O
=
−6V −2 −100 µA
I
S
+
Output Short Circuit Current V
O
=
0V V
IN
=
2.4V −80 −150 mA
I
S
−
Output Short Circuit Current V
O
=
0V V
IN
=
0.4V 80 150 mA
I
SLEW
Slew Control Current
±
140 µA
I
CC
Positive Supply Current V
IN
=
0.4V, R
L
=
∞
18 30 mA
I
EE
Negative Supply Current V
IN
=
0.4V, R
L
=
∞
−10 −22 mA
Note 2: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices
should be operated at these limits. The tables of “Electrical Characteristics” provide conditions for actual device operation.
Note 3: Unless otherwise specified, min/max limits apply across the −55˚C to +125˚C temperature range for the DS1691A and across the 0˚C to +70˚C range for
the DS3691. All typicals are given for V
CC
=
5V and T
A
=
25˚C. V
CC
and VEEas listed in operating conditions.
Note 4: All currents into device pins are positive; all currents out of device pins are negative.All voltages are referenced to ground unless otherwise specified.
Note 5: Only one output at a time should be shorted.
Note 6: Symbols and definitions correspond to EIA RS-422 and/or RS-423 where applicable.
Note 7: At −55˚C, the output voltage is +3.9V minimum and −3.9V minimum.
AC Electrical Characteristics (Note 6)
T
A
=
25˚C
Symbol Parameter Conditions Min Typ Max Units
RS-423 CONNECTION, V
CC
=
5V, V
EE
−5V, MODE SELECT=2.4V
t
r
Rise Time R
L
=
450Ω,C
L
=
500 pF, C
C
=
0(
Figure 2
) 120 300 ns
t
f
Fall Time R
L
=
450Ω,C
L
=
500 pF, C
C
=
0(
Figure 2
) 120 300 ns
t
r
Rise Time R
L
=
450Ω,C
L
=
500 pF C
C
=
50 pF (
Figure 3
) 3.0 µs
t
f
Fall Time R
L
=
450Ω,C
L
=
500 pF C
C
=
50 pF (
Figure 3
) 3.0 µs
t
rc
Rise Time Coefficient R
L
=
450Ω,C
L
=
500 pF, C
C
=
50 pF (
Figure 3
) 0.06 µs/pF
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