Datasheet DS3691N, DS3691MX, DS3691M Datasheet (NSC)

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

3 www.national.com

AC Electrical Characteristics (Note 6) (Continued)

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

PDH

Output Propagation Delay R

L

=

450Ω,C

L

=

500 pF, C

C

=

0(

Figure 2

) 180 300 ns

t

PDL

Output Propagation Delay R

L

=

450Ω,C

L

=

500 pF, C

C

=

0(

Figure 2

) 180 300 ns

AC Test Circuits and Switching Time Waveforms

DS005783-3

DS005783-4

FIGURE 1. Differential Connection

DS005783-5

DS005783-6

FIGURE 2. RS-423 Connection

www.national.com 4

AC Test Circuits and Switching Time Waveforms (Continued)

Switching Waveforms

DS005783-7

DS005783-8

FIGURE 3. Rise Time Control for RS-423

DS005783-9

DS005783-10

FIGURE 4. TRI-STATE Delays

DS005783-11

FIGURE 5. Typical Output Voltage

5 www.national.com

Truth Table

Operation Inputs Outputs

Mode A (D) B (C) A (D) B (C)

RS-422 0 0 0 0 1

0 0 1 TRI-STATE TRI-STATE
010 1 0
0 1 1 TRI-STATE TRI-STATE

RS-423 1 0 0 0 0

101 0 1
110 1 0
111 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

www.national.com 6

Typical Application Information (Continued)

Typical Rise Time Control Characteristics (RS-423 Mode)

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

Rise Time vs External Capacitor

DS005783-12

7 www.national.com

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 www.national.com

Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

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the body, or (b) support or sustain life, and whose fail­ure to perform when properly used in accordance
with instructions for use provided in the labeling, can
be reasonably expected to result in a significant injury
to the user.

2. A critical component in any componentof a life support
device or system whose failure to perform can be rea­sonably expected to cause the failureof thelife support
device or system, or to affect its safety or effectiveness.

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Molded Dual-In-Line Package (N)

Order Number DS3691N

NS Package Number N16E

DS1691A/DS3691 (RS-422/RS-423) Line Drivers with TRI-STATE Outputs

National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.