NSC 5962-8752301PA Datasheet

DS9636A
RS-423 Dual Programmable Slew Rate Line Driver

General Description

The DS9636A is a TTL/CMOS compatible, dual, single
ended line driver which has been specifically designed to
satisfy the requirements of EIA Standard RS-423.

The DS9636A is suitable for use in digital data transmission
systems where signal wave shaping is desired. The output
slew rates are jointly controlled by a single external resistor
connected between the wave shapingcontrollead(WS) and
ground. This eliminates any need for external filtering of the
output signals. Output voltage levels and slew rates are in­dependent of power supply variations. Current-limiting is
provided in both output states. The DS9636A is designed for
nominal power supplies of

±

12V.

Inputs are TTL compatible with input current loading low
enough (1/10 UL) to be also compatible with CMOS logic.
Clamp diodes are provided on the inputs to limit transients
below ground.

Features

n Programmable slew rate limiting
n Meets EIA Standard RS-423
n Commercial or extended temperature range
n Output short circuit protection
n TTL and CMOS compatible inputs

Connection Diagram

8-Lead DIP

DS009620-1

Top View

Order Number DS9636ACN,

See NS Package Number N08E

For Complete Military Product Specifications,

refer to the appropriate SMD or MDS.

Order Number DS9636AJ/883

See NS Package Number J08A

May 1998

DS9636A RS-423 Dual Programmable Slew Rate Line Driver

© 1998 National Semiconductor Corporation DS009620 www.national.com

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.

Storage Temperature Range

Ceramic DIP −65˚C to +175˚C
Molded DIP −65˚C to +150˚C

Lead Temperature

Ceramic DIP (Soldering, 60 seconds) 300˚C
Molded DIP (Soldering, 10 seconds) 265˚C

Maximum Power Dissipation

*

at 25˚C (Note 5)
Cavity Package 1560 mW
Molded Package 1300 mW

V+ Lead Potential to Ground Lead V− to +15V
V− Lead Potential to Ground Lead +0.5V to −15V
V+ Lead Potential to V− Lead 0V to +30V
Output Potential to Ground Lead

±

15V
Output Source Current −150 mA
Output Sink Current 150 mA

Recommended Operating Conditions

Characteristics DS9636AM DS9636AC Units

Min Typ Max Min Typ Max

Positive Supply Voltage (V+) 10.8 12 13.2 10.8 12 13.2 V
Negative Supply Voltage (V−) −13.2 −12 −10.8 −13.2 −12 −10.8 V
Operating Temperature (T

A

) −55 25 125 0 25 70 ˚C

Wave Shaping Resistance (R

WS

) 10 500 10 1000 kΩ

Electrical Characteristics (Notes 2, 3)

Over recommended operating temperature, supply voltage and wave shaping resistance ranges unless otherwise specified

Symbol Parameter Conditions Min Typ Max Units

V

OH1

Output Voltage HIGH RLto GND (R

L

=

∞

) 5.0 5.6 6.0 V

V

OH2

RLto GND (R

L

=

3.0 kΩ) 5.0 5.6 6.0 V

V

OH3

RLto GND (R

L

=

450Ω) 4.0 5.5 6.0 V

V

OL1

Output Voltage LOW RLto GND (R

L

=

∞

) −6.0 −5.7 −5.0 V

V

OL2

RLto GND (R

L

=

3.0 kΩ) −6.0 −5.6 −5.0 V

V

OL3

RLto GND (R

L

=

450Ω) −6.0 −5.4 −4.0 V

R

O

Output Resistance 450Ω≤R

L

25 50 Ω

I

OS+

Output Short Circuit Current (Note 4) V

O

=

0V, V

I

=

0V −150 −60 −15 mA

I

OS−

V

O

=

0V, V

I

=

2.0V 15 60 150 mA

I

CEX

Output Leakage Current V

O

=

±

6.0V, Power-Off −100 +100 µA

V

IH

Input Voltage HIGH 2.0 V

V

IL

Input Voltage LOW 0.8 V

V

IC

Input Clamp Diode Voltage I

I

=

15 mA −1.5 −1.1 V

I

IL

Input Current LOW V

I

=

0.4V −80 −16 V

I

IH

Input Current HIGH V

I

=

2.4V 1.0 10 µA

V

I

=

5.5V 10 100

I+ Positive Supply Current V

CC

=

±

12V, R

L

=

∞

,1318mA

R

WS

=

100 kΩ,V

I

=

0V

I− Negative Supply Current V

CC

=

±

12V, R

L

=

∞

, −18 −13 mA

R

WS

=

100 kΩ,V

I

=

0V

Note 1: “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 2: Unless otherwise specified Min/Max limits apply across the −55˚C to +125˚C temperature range for the DS9636AM and across the 0˚C to +70˚C range for
the DS9636AC. All typicals are given for V

CC

=

5V and T

A

=

25˚C.

Note 3: All currents into the device pins are positive; all currents out of the device pins are negative.All voltages are reference to ground unless otherwise specified.
Note 4: Only one output at a time should be shorted.
Note 5: Ratings apply to ambient temperature at 25˚C. Above this temperature, derate J and N packages 10.4 mW/˚C.

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