DS1691A,DS3691
DS1691A/DS3691 (RS-422/RS-423) Line Drivers with TRI-STATE Outputs
Literature Number: SNLS357C
August 27, 2008
DS1691A/DS3691
(RS-422/RS-423) Line Drivers with TRI-STATE® Outputs
General Description
Features
The DS1691A/DS3691 are low power Schottky TTL line
drivers 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. A mode control input provides a choice of
operation either as 4 single-ended line drivers or 2 differential
line drivers. A rise time control pin allows 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 dualdifferential 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.
■ Dual RS-422 line driver with mode pin low, or quad RS-423
■
■
■
■
■
line driver with mode pin high
TRI-STATE outputs in RS-422 mode
Short circuit protection for both source and sink outputs
Outputs will not clamp line with power off or in TRI-STATE
100Ω transmission line drive capability
Low ICC and IEE power consumption
RS-422: ICC = 9 mA/driver typ
RS-423: ICC = 4.5 mA/driver typ:
I EE = 2.5 mA/driver typ
■ Low current PNP inputs compatible with TTL, MOS and
CMOS
■ Pin compatible with AM26LS30
Connection Diagrams
With Mode Select LOW
(RS-422 Connection)
With Mode Select HIGH
(RS-423 Connection)
578302
578301
Top View
Top View
Ordering Information
Package Type
NS Package Number
DS3691M
Order Number
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 trademark of National Semiconductor Corporation.
© 2008 National Semiconductor Corporation
5783
5783 Version 7 Revision 3
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Print Date/Time: 2008/08/27 16:33:51
DS1691A/DS3691 (RS-422/RS-423) Line Drivers with TRI-STATE Outputs
OBSOLETE
DS1691A/DS3691
Storage Temperature
Lead Temperature
(Soldering, 4 seconds)
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
VCC
VEE
Maximum Power Dissipation (Note 1) at 25°C
Cavity Package
Molded DIP Package
SO Package
Input Voltage
Output Voltage (Power OFF)
−65°C to + 150°C
260°C
Operating Conditions
7V
−7V
Supply Voltage
DS1691A
VCC
VEE
DS3691
VCC
VEE
Temperature (TA)
DS1691A
DS3691
1509 mW
1476 mW
1051 mW
15V
±15V
Min
Max
Units
4.5
−4.5
5.5
−5.5
V
V
4.75
−4.75
5.25
−5.25
V
V
−55
0
+125
+70
°C
°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
Symbol
(Notes 3, 4, 5, 6)
Parameter
Conditions
Min
Typ
Max
Units
RS-422 CONNECTION, VEE CONNECTION TO GROUND, MODE SELECT ≤ 0.8V
VIH
High Level Input Voltage
VIL
Low Level Input Voltage
IIH
High Level Input Current
2
V
0.8
V
VIN = 2.4V
1
40
μA
VIN ≤ 15V
10
100
μA
−30
−200
μA
−1.5
V
3.6
6.0
V
−3.6
−6.0
V
IIL
Low Level Input Current
VIN = 0.4V
VI
Input Clamp Voltage
I IN = −12 mA
VO
Differential Output Voltage
RL = ∞
VO
VA,B
VT
Differential Output Voltage
RL = 100Ω
VIN = 2V
2
2.4
V
VT
VA,B
VCC ≥ 4.75V
VIN = 0.8V
−2
−2.4
V
VOS, VOS
Common-Mode Offset
RL = 100Ω
2.5
3
V
RL = 100Ω
0.05
0.4
V
RL = 100Ω
0.05
0.4
V
VIN = 2V
VIN = 0.8V
Voltage
|VT| − | VT |
Difference in Differential
Output Voltage
|VOS| − | VOS |
Difference in CommonMode Offset Voltage
VSS
|VT − VT |
R L = 100Ω, VCC ≥ 4.75V
4.0
VCMR
Output Voltage Common-
VDISABLE = 2.4V
±10
4.8
V
V
Mode Range
IXA
Output Leakage Current
IXB
Power OFF
IOX
TRI-STATE Output Current
ISA
ISB
ICC
Output Short Circuit Current
Output Short Circuit Current
VCMR = 10V
100
μA
VCMR = −10V
−100
μA
VCC = Max
VCMR ≤ 10V
100
μA
VEE = 0V and −5V
VCMR ≥ −10V
−100
μA
VIN = 0.4V
VOA = 6V
80
150
mA
VOB = 0V
−80
−150
mA
VOA = 0V
−80
−150
mA
VOB = 6V
80
150
mA
18
30
mA
VCC = 0V
VIN = 2.4V
Supply Current
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5783 Version 7 Revision 3
Print Date/Time: 2008/08/27 16:33:51
(Note 6)
TA = 25°C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
RS-422 CONNECTION, VCC = 5V, MODE SELECT = 0.8V
tr
Output Rise Time
RL = 100Ω, CL = 500 pF (Figure 1 )
120
200
ns
tf
Output Fall Time
RL = 100Ω, CL = 500 pF (Figure 1 )
120
200
ns
tPDH
Output Propagation Delay
RL = 100Ω, CL = 500 pF (Figure 1 )
120
200
ns
tPDL
Output Propagation Delay
RL = 100Ω, CL = 500 pF (Figure 1 )
120
200
ns
tPZL
TRI-STATE Delay
RL = 450Ω, CL = 500 pF, CC = 0 pF (Figure 4 )
250
350
ns
tPZH
TRI-STATE Delay
RL = 450Ω, CL = 500 pF, CC = 0 pF (Figure 4 )
180
300
ns
tPLZ
TRI-STATE Delay
RL = 450Ω, CL = 500 pF, CC = 0 pF (Figure 4 )
180
300
ns
tPHZ
TRI-STATE Delay
RL = 450Ω, CL = 500 pF, CC = 0 pF (Figure 4 )
250
350
ns
Max
Units
DC Electrical Characteristics
Symbol
(Notes 3, 4, 5, 6)
Parameter
Conditions
Min
Typ
RS-423 CONNECTION, |VCC| = |V EE|, MODE SELECT ≥ 2V
VIH
High Level Input Voltage
VIL
Low Level Input Voltage
IIH
High Level Input Current
2
V
0.8
V
VIN = 2.4V
1
40
μA
VIN ≤ 15V
10
100
μA
−30
−200
μA
−1.5
V
IIL
Low Level Input Current
VIN = 0.4V
VI
Input Clamp Voltage
IIN = −12 mA
VO
Output Voltage
RL = ∞, (Note 7)
VIN = 2V
4.0
4.4
6.0
V
VCC ≥ 4.75V
VIN = 0.4V
−4.0
−4.4
−6.0
V
RL = 450Ω
VIN = 2.4V
3.6
4.1
V
VCC ≥ 4.75V
VIN = 0.4V
−3.6
−4.1
V
VO
VT
Output Voltage
VT
|VT| − | VT |
Output Unbalance
|V CC| = |VEE| = 4.75V, R L = 450Ω
IX+
Output Leakage Power OFF
VCC = V EE = 0V
VO = 6V
IX−
Output Leakage Power OFF
VCC = V EE = 0V
VO = −6V
IS+
Output Short Circuit Current
VO = 0V
VIN = 2.4V
IS−
Output Short Circuit Current
VO = 0V
VIN = 0.4V
ISLEW
Slew Control Current
ICC
Positive Supply Current
IEE
Negative Supply Current
0.02
0.4
V
2
100
μA
−2
−100
μA
−80
−150
mA
80
150
mA
V IN = 0.4V, RL = ∞
18
30
mA
V IN = 0.4V, RL = ∞
−10
−22
mA
μA
±140
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 TA = 25°C. VCC and VEE as 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.
3
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DS1691A/DS3691
AC Electrical Characteristics
DS1691A/DS3691
AC Electrical Characteristics
(Note 6)
TA = 25°C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
RS-423 CONNECTION, VCC = 5V, VEE −5V, MODE SELECT = 2.4V
tr
Rise Time
RL = 450Ω, CL = 500 pF, CC = 0 (Figure 2 )
120
300
ns
tf
Fall Time
RL = 450Ω, CL = 500 pF, CC = 0 (Figure 2 )
120
300
ns
tr
Rise Time
RL = 450Ω, CL = 500 pF CC = 50 pF (Figure 3 )
3.0
μs
tf
Fall Time
RL = 450Ω, CL = 500 pF CC = 50 pF (Figure 3 )
3.0
μs
trc
Rise Time Coefficient
RL = 450Ω, CL = 500 pF, CC = 50 pF (Figure 3 )
0.06
μs/pF
tPDH
Output Propagation Delay
RL = 450Ω, CL = 500 pF, CC = 0 (Figure 2 )
180
300
ns
tPDL
Output Propagation Delay
RL = 450Ω, CL = 500 pF, CC = 0 (Figure 2 )
180
300
ns
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5783 Version 7 Revision 3
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DS1691A/DS3691
AC Test Circuits and Switching Time Waveforms
578304
578303
FIGURE 1. Differential Connection
578305
578306
FIGURE 2. RS-423 Connection
5
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DS1691A/DS3691
578307
578308
FIGURE 3. Rise Time Control for RS-423
578310
578309
FIGURE 4. TRI-STATE Delays
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DS1691A/DS3691
Switching Waveforms
578311
FIGURE 5. Typical Output Voltage
Truth Table
Inputs
Operation
Outputs
Mode
A (D)
B (C)
A (D)
B (C)
RS-422
0
0
0
0
0
0
1
1
0
1
0
1
0
TRI-STATE
1
TRI-STATE
1
TRI-STATE
0
TRI-STATE
RS-423
1
1
1
1
0
0
1
1
0
1
0
1
0
0
1
1
0
1
0
1
Typical Application Information
Fully Loaded RS-422 Interface
578313
RS-422 Point to Point Application
578314
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DS1691A/DS3691
Fully Loaded RS-423 Interface
578315
Differential Application with Rise Time Control
578316
*Note: Controlled edge allows longer stub lengths. Multiple Drivers are NOT allowed.
Dual RS-423 Inverting Driver
578317
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DS1691A/DS3691
Typical Rise Time Control Characteristics
(RS-423 Mode)
Rise Time vs External Capacitor
578312
9
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DS1691A/DS3691
Physical Dimensions inches (millimeters) unless otherwise noted
Ceramic Dual-In-Line Package (J)
Order Number DS1691AJ/883
NS Package Number J16A
SO Package (M)
Order Number DS3691M
NS Package Number M16A
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5783 Version 7 Revision 3
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DS1691A/DS3691
Molded Dual-In-Line Package (N)
Order Number DS3691N
NS Package Number N16E
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DS1691A/DS3691 (RS-422/RS-423) Line Drivers with TRI-STATE Outputs
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