NSC DS3691N

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
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.
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 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
n Low current PNP inputs compatible with TTL, MOS and
CMOS
n Pin compatible with AM26LS30
Connection Diagrams
With Mode Select LOW
(RS-422 Connection)
With Mode Select HIGH
(RS-423 Connection)
DS005783-2
DS005783-1
Top View
Top View
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 trademark of National Semiconductor Corporation.
© 1998 National Semiconductor Corporation
DS005783
www.national.com
DS1691A/DS3691 (RS-422/RS-423) Line Drivers with TRI-STATE Outputs
July 1998
Absolute Maximum Ratings (Note 2)
Operating Conditions
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)
Storage Temperature
−65˚C
Lead Temperature
(Soldering, 4 seconds)
Supply Voltage
DS1691A
VCC
VEE
DS3691
VCC
VEE
Temperature (TA)
DS1691A
DS3691
7V
−7V
1509 mW
1476 mW
1051 mW
15V
± 15V
to + 150˚C
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.
260˚C
DC Electrical Characteristics (Notes 3, 4, 5, 6)
Symbol
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
VIN = 2.4V
1
100
µA
Low Level Input Current
VIN ≤ 15V
VIN = 0.4V
10
IIL
−30
−200
µA
2
I IN = −12 mA
RL = ∞
VI
Input Clamp Voltage
VO
Differential Output Voltage
VO
VA,B
VT
Differential Output Voltage
RL = 100Ω
VT
VA,B
VOS, VOS
Common-Mode Offset
VCC ≥ 4.75V
RL = 100Ω
V
0.8
V
40
µA
−1.5
V
3.6
6.0
V
−3.6
−6.0
V
VIN = 2V
VIN = 0.8V
VIN = 2V
2
2.4
VIN = 0.8V
−2
−2.4
V
V
2.5
3
V
RL = 100Ω
0.05
0.4
V
RL = 100Ω
0.05
0.4
V
Voltage
|VT| − | VT |
Difference in Differential
Output Voltage
|VOS| − | VOS |
Difference in CommonMode Offset Voltage
VSS
|VT − VT |
VCMR
Output Voltage Common-
R L = 100Ω, VCC ≥ 4.75V
VDISABLE = 2.4V
4.0
4.8
V
± 10
V
Mode Range
IXA
Output Leakage Current
IXB
Power OFF
IOX
TRI-STATE Output Current
VCC = 0V
ISA
Output Short Circuit Current
VCC = Max
VEE = 0V and −5V
VIN = 0.4V
ISB
Output Short Circuit Current
VIN = 2.4V
ICC
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VCMR = 10V
VCMR = −10V
100
µA
−100
µA
VCMR ≤ 10V
100
µA
VCMR ≥ −10V
VOA = 6V
−100
µA
80
150
mA
−80
−150
mA
−80
−150
mA
80
150
mA
18
30
mA
VOB = 0V
VOA = 0V
VOB = 6V
Supply Current
2
AC Electrical Characteristics
(Note 6)
TA = 25˚C
Symbol
Parameter
Conditions
RS-422 CONNECTION, VCC = 5V, MODE SELECT = 0.8V
tr
Output Rise Time
RL = 100Ω, CL = 500 pF (Figure 1 )
tf
Output Fall Time
RL = 100Ω, CL = 500 pF (Figure 1 )
tPDH
Output Propagation Delay
RL = 100Ω, CL = 500 pF (Figure 1 )
tPDL
Output Propagation Delay
tPZL
TRI-STATE Delay
tPZH
TRI-STATE Delay
tPLZ
TRI-STATE Delay
tPHZ
TRI-STATE Delay
Min
RL = 100Ω, CL = 500 pF (Figure 1 )
RL = 450Ω, CL = 500 pF, CC = 0 pF (Figure 4 )
RL = 450Ω, CL = 500 pF, CC = 0 pF (Figure 4 )
RL = 450Ω, CL = 500 pF, CC = 0 pF (Figure 4 )
RL = 450Ω, CL = 500 pF, CC = 0 pF (Figure 4 )
Typ
Max
Units
120
200
ns
120
200
ns
120
200
ns
120
200
ns
250
350
ns
180
300
ns
180
300
ns
250
350
ns
Max
Units
DC Electrical Characteristics (Notes 3, 4, 5, 6)
Symbol
Parameter
RS-423 CONNECTION, |VCC| = |V EE|, MODE SELECT ≥ 2V
Conditions
Min
Typ
VIH
High Level Input Voltage
VIL
Low Level Input Voltage
IIH
High Level Input Current
VIN = 2.4V
1
100
µA
Low Level Input Current
VIN ≤ 15V
VIN = 0.4V
10
IIL
−30
−200
µA
VI
Input Clamp Voltage
VO
Output Voltage
IIN = −12 mA
RL = ∞, (Note 7)
Output Voltage
VCC ≥ 4.75V
RL = 450Ω
VO
VT
VT
2
VIN = 2V
VIN = 0.4V
VIN = 2.4V
VCC ≥ 4.75V
VIN = 0.4V
|V CC| = |VEE| = 4.75V, R L = 450Ω
VCC = V EE = 0V
VO = 6V
|VT| − | VT |
Output Unbalance
IX+
Output Leakage Power OFF
IX−
Output Leakage Power OFF
IS+
Output Short Circuit Current
VCC = V EE = 0V
VO = 0V
VO = −6V
VIN = 2.4V
IS−
Output Short Circuit Current
VO = 0V
VIN = 0.4V
ISLEW
Slew Control Current
ICC
Positive Supply Current
V
IN
IEE
Negative Supply Current
V
IN
V
0.8
V
40
µA
−1.5
V
4.0
4.4
6.0
V
−4.0
−4.4
−6.0
V
3.6
4.1
V
−3.6
−4.1
V
0.02
0.4
V
2
100
µA
−2
−100
µA
−80
−150
mA
80
150
mA
18
30
mA
−10
−22
mA
± 140
= 0.4V, RL = ∞
= 0.4V, RL = ∞
µA
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.
AC Electrical Characteristics
(Note 6)
TA = 25˚C
Symbol
Parameter
Conditions
RS-423 CONNECTION, VCC = 5V, VEE −5V, MODE SELECT = 2.4V
tr
Rise Time
RL = 450Ω, CL = 500 pF, CC = 0 (Figure 2 )
tf
Fall Time
RL = 450Ω, CL = 500 pF, CC = 0 (Figure 2 )
tr
Rise Time
RL = 450Ω, CL = 500 pF CC = 50 pF (Figure 3 )
tf
Fall Time
RL = 450Ω, CL = 500 pF CC = 50 pF (Figure 3 )
trc
Rise Time Coefficient
RL = 450Ω, CL = 500 pF, CC = 50 pF (Figure 3 )
3
Min
Typ
Max
Units
120
300
ns
120
300
3.0
ns
µs
3.0
µs
0.06
µs/pF
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AC Electrical Characteristics
(Note 6) (Continued)
TA = 25˚C
Symbol
Parameter
Conditions
RS-423 CONNECTION, VCC = 5V, VEE −5V, MODE SELECT = 2.4V
tPDH
Output Propagation Delay
RL = 450Ω, CL = 500 pF, CC = 0 (Figure 2 )
tPDL
Output Propagation Delay
RL = 450Ω, CL = 500 pF, CC = 0 (Figure 2 )
Min
Typ
Max
Units
180
300
ns
180
300
ns
AC Test Circuits and Switching Time Waveforms
DS005783-4
DS005783-3
FIGURE 1. Differential Connection
DS005783-5
DS005783-6
FIGURE 2. RS-423 Connection
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4
AC Test Circuits and Switching Time Waveforms
(Continued)
DS005783-7
DS005783-8
FIGURE 3. Rise Time Control for RS-423
DS005783-10
DS005783-9
FIGURE 4. TRI-STATE Delays
Switching Waveforms
DS005783-11
FIGURE 5. Typical Output Voltage
5
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Truth Table
Operation
RS-422
RS-423
Inputs
Outputs
Mode
A (D)
B (C)
A (D)
0
0
0
0
B (C)
1
0
0
1
TRI-STATE
TRI-STATE
0
1
0
1
0
0
1
1
TRI-STATE
TRI-STATE
1
0
0
0
0
1
0
1
0
1
1
1
0
1
0
1
1
1
1
1
Typical Application Information
Fully Loaded RS-422 Interface
DS005783-13
RS-422 Point to Point Application
DS005783-14
Fully Loaded RS-423 Interface
DS005783-15
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6
Typical Application Information
(Continued)
Differential Application with Rise Time Control
DS005783-16
*Note: Controlled edge allows longer stub lengths. Multiple Drivers are NOT allowed.
Dual RS-423 Inverting Driver
DS005783-17
Typical Rise Time Control Characteristics
(RS-423 Mode)
Rise Time vs External Capacitor
DS005783-12
7
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8
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
9
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DS1691A/DS3691 (RS-422/RS-423) Line Drivers with TRI-STATE Outputs
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
Molded Dual-In-Line Package (N)
Order Number DS3691N
NS Package Number N16E
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