SN75179A Datasheet: Differential Driver And Receiver Pair





SN75179A Differential Driver And Receiver Pair Datasheet

Part Number SN75179A
Description Differential Driver And Receiver Pair
Manufacture etcTI
Total Page 10 Pages
PDF Download Download SN75179A Datasheet PDF

Features: ą • Meets EIA Standards RS-422A, RS42 3A, and CCITT Recommendations V.11 and X.27 • Bus Voltage Range . . . −7 V to 12 V • Positive and Negative Curr ent Limiting • Driver Output Capabili ty . . . 60 mA Max • Driver Thermal S hutdown Protection • Receiver Input I mpedance . . . 12 kΩ Min • Receiver Input Sensitivity . . . ± 200 mV • Receiver Input Hysteresis . . . 50 mV T yp • Operates From Single 5-V Supply • Low Power Requirements SN75179A DI FFERENTIAL DRIVER AND RECEIVER PAIR ą SLLS123B − D2845, JUNE 1984 − REVIS ED FEBRUARY 1993 D OR P PACKAGE (TOP VI EW) VCC R D GND 1 2 3 4 8A 7B 6Z 5Y NOT RECOMMENDED FOR NEW DESIGN logic s ymbol description The SN75179A driver and bus receiver circuit is a monolithi c integrated device designed for balanc ed transmission line applications, and meets EIA Standards RS-422A, RS-423A, a nd CCITT Recommendations V.11 and X.27. It is designed to improve the performa nce of data communications over long bus lines. The SN75179A features positive- and negativecu.

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Meets EIA Standards RS-422A, RS423A,
and CCITT Recommendations V.11 and X.27
Bus Voltage Range . . . −7 V to 12 V
Positive and Negative Current Limiting
Driver Output Capability . . . 60 mA Max
Driver Thermal Shutdown Protection
Receiver Input Impedance . . . 12 kMin
Receiver Input Sensitivity . . . ± 200 mV
Receiver Input Hysteresis . . . 50 mV Typ
Operates From Single 5-V Supply
Low Power Requirements
SN75179A
DIFFERENTIAL DRIVER AND RECEIVER PAIR
ą
SLLS123B − D2845, JUNE 1984 − REVISED FEBRUARY 1993
D OR P PACKAGE
(TOP VIEW)
VCC
R
D
GND
1
2
3
4
8A
7B
6Z
5Y
NOT RECOMMENDED FOR NEW DESIGN
logic symbol
description
The SN75179A driver and bus receiver circuit is a
monolithic integrated device designed for
balanced transmission line applications, and
meets EIA Standards RS-422A, RS-423A, and
CCITT Recommendations V.11 and X.27. It is
designed to improve the performance of data
communications over long bus lines.
The SN75179A features positive- and negative-
current limiting for the driver and receiver. The
receiver features high input impedance, input
hysteresis for increased noise immunity, and input
sensitivity of ± 200 mV over a common-mode input
voltage range of −12 V to 12 V.
The driver provides thermal shutdown for
protection from line fault conditions. Thermal
shutdown is designed to occur at a junction
temperature of approximately 150°C. The device
is designed to drive current loads of up to 60 mA
maximum.
The SN75179A is characterized for operation
from 0°C to 70°C.
2
R
3
D
logic diagram
2
R
3
D
8
A
7
B
6
Z
5
Y
8
A
7
B
6
Z
5
Y
Function Tables
DRIVER
INPUT
D
OUTPUTS
YZ
H HL
L LH
RECEIVER
DIFFERENTIAL INPUTS
A−B
VID 0.2 V
−0.2 V < VID < 0.2 V
VID −0.2 V
H = high level, L = low level, ? = indeterminate
OUTPUT
R
H
?
L
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.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77001
Copyright 1993, Texas Instruments Incorporated
2−1

                    
        






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