Texas Instruments SN751730DR, SN751730N, SN751730NS, SN751730NSR, SN751730D Datasheet

SN751730

TRIPLE LINE DRIVER/RECEIVER

SLLS062C – MAY 1990 – REVISED MAY 1995

1

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D

Meets or Exceeds the Requirements of
IBM 360/370 Input/Output Interface
Specification for 4.5 Mb/s Operation

D

Single 5-V Supply

D

Uncommited Emmitter-Follower Output
Structure for Party-Line Operation

D

Driver Output Short-Circuit Protection

D

Driver Input/Receiver Output Compatible
With TTL

D

Receiver Input Resistance...7.4 kΩ
to 20 kΩ

D

Ratio Specification for Propagation Delay
Time, Low-to-High/High-to-Low

description

The SN751730 triple line driver/receiver is specifically designed to meet the input/output interface specifications
for IBM System 360/370. It is also compatible with standard TTL logic and supply voltage levels.

The low-impedance emitter-follower driver outputs of the SN751730 drive terminated lines such as coaxial
cable or twisted pair. Having the outputs uncommitted allows wired-OR logic to be performed in party-line
applications. Output short-circuit protection is provided by an internal clamping network that turns on when the
output voltage drops below approximately 2.5 V.

An open line affects the receiver input as does a low-level input voltage.
All the driver inputs and receiver outputs are in conventional TTL configuration and the gating can be used

during power-up and power-down sequences to ensure that no noise is introduced to the line by pulling either
DE1 or DE2 to a low level.

Function Tables

EACH DRIVER

INPUTS

OUTPUT

DI DE1 DE2

DO

L X X L
X LX L
XXL L

HHH H

EACH DRIVER

INPUT

RI

OUTPUT

RO

L H

H L

Open H

H = high level, L = low level,
X = irrelevant

Copyright  1995, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

1
2
3
4
5
6
7
8

16
15
14
13
12
11
10

9

DE1

RI1

RO1

RI2

RO2

RI3

RO3

GND

V

CC

DO1
DI1
DO2
DI2
DO3
DI3
DE2

(TOP VIEW)

D OR N PACKAGE

IBM is a trademark of International Business Machines Corporation.

SN751730
TRIPLE LINE DRIVER/RECEIVER

SLLS062C – MAY 1990 – REVISED MAY 1995

2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

logic symbols

†

&

EN

DE1
DE2

DI1

DI2

DI3

2

RI1

4

RI2

6

RI3

DO1

15

DO2

13

DO3

11

RO1

RO2

DRIVER

RECEIVER

RO3

3

5

7

†

These symbols are in accordance with ANSI/IEE Std 91-1984
and IEC Publication 617-12.

1

12

9

14

10

logic diagrams (positive logic)

DO1

15

DO2

13

DO3

11

DE1

DI1

DI2

DI3

DE2

DRIVER

1

14

12

10

9

2

RI1

RO1

3

4

RI2

RO2

5

6

RI3

RO3

7

RECEIVER

SN751730

TRIPLE LINE DRIVER/RECEIVER

SLLS062C – MAY 1990 – REVISED MAY 1995

3

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

equivalent schematics of driver and receiver

†

DRIVER

RECEIVER

V

CC

V

CC

15 kΩ

2.5 Ω

DO

100 Ω

6 kΩ

60 Ω

RI

14 kΩ

RO

DI

DE1
DE2

†

All resistor values are nominal.