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RECEIVER PAIR. SN75179B Datasheet

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RECEIVER PAIR. SN75179B Datasheet
















SN75179B PAIR. Datasheet pdf. Equivalent













Part

SN75179B

Description

DIFFERENTIAL DRIVER AND RECEIVER PAIR



Feature


SN75179B DIFFERENTIAL DRIVER AND RECEIVE R PAIR D Meets or Exceeds the Requirem ents of TIA/EIA-422-B, TIA/EIA-485-A, a nd ITU Recommendation V.11 D Bus Voltag e Range . . . – 7 V to 12 V D Positiv e- and Negative-Current Limiting D Driv er Output Capability . . . 60 mA Max D Driver Thermal-Shutdown Protection D Re ceiver Input Impedance . . . 12 kΩ Mi n D Receiver Input Sen.
Manufacture

Texas Instruments

Datasheet
Download SN75179B Datasheet


Texas Instruments SN75179B

SN75179B; sitivity . . . ± 200 mV D Receiver Inpu t Hysteresis . . . 50 mV Typ D Operates From Single 5-V Supply D Low Power Req uirements SLLS003E – OCTOBER 1985 REVISED JUNE 1998 D OR P PACKAGE (TOP VIEW) VCC 1 R2 D3 GND 4 8A 7B 6Z 5Y description The SN75179B is a differen tial driver and receiver pair designed for balanced transmission-line applicat ions and meets TIA/EIA-.


Texas Instruments SN75179B

422-B, TIA/EIA-485-A, and ITU Recommenda tion V.11. It is designed to improve th e performance of full-duplex data commu nications over long bus lines. The SN75 179B driver output provides limiting fo r both positive and negative currents. The receiver features high input impeda nce, input hysteresis for increased noi se immunity, and input sensitivity of 200 mV over a com.


Texas Instruments SN75179B

mon-mode input voltage range of – 7 V to 12 V. The driver provides thermal sh utdown for protection from line fault c onditions. Thermal shutdown is designed to occur at a junction temperature of approximately 150°C. The SN75179B is d esigned to drive current loads of up to 60 mA maximum. The SN75179B is charact erized for operation from 0°C to 70°C . Function Tables DRI.





Part

SN75179B

Description

DIFFERENTIAL DRIVER AND RECEIVER PAIR



Feature


SN75179B DIFFERENTIAL DRIVER AND RECEIVE R PAIR D Meets or Exceeds the Requirem ents of TIA/EIA-422-B, TIA/EIA-485-A, a nd ITU Recommendation V.11 D Bus Voltag e Range . . . – 7 V to 12 V D Positiv e- and Negative-Current Limiting D Driv er Output Capability . . . 60 mA Max D Driver Thermal-Shutdown Protection D Re ceiver Input Impedance . . . 12 kΩ Mi n D Receiver Input Sen.
Manufacture

Texas Instruments

Datasheet
Download SN75179B Datasheet




 SN75179B
SN75179B
DIFFERENTIAL DRIVER AND RECEIVER PAIR
D Meets or Exceeds the Requirements of
TIA/EIA-422-B, TIA/EIA-485-A, and ITU
Recommendation V.11
D Bus Voltage Range . . . – 7 V to 12 V
D Positive- and Negative-Current Limiting
D Driver Output Capability . . . 60 mA Max
D Driver Thermal-Shutdown Protection
D Receiver Input Impedance . . . 12 kMin
D Receiver Input Sensitivity . . . ± 200 mV
D Receiver Input Hysteresis . . . 50 mV Typ
D Operates From Single 5-V Supply
D Low Power Requirements
SLLS003E – OCTOBER 1985 – REVISED JUNE 1998
D OR P PACKAGE
(TOP VIEW)
VCC 1
R2
D3
GND 4
8A
7B
6Z
5Y
description
The SN75179B is a differential driver and receiver pair designed for balanced transmission-line applications
and meets TIA/EIA-422-B, TIA/EIA-485-A, and ITU Recommendation V.11. It is designed to improve the
performance of full-duplex data communications over long bus lines.
The SN75179B driver output provides limiting for both positive and negative currents. 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 – 7 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 SN75179B is designed to drive current loads of up to 60 mA maximum.
The SN75179B is characterized for operation from 0°C to 70°C.
Function Tables
DRIVER
INPUT
D
OUTPUTS
Y
Z
H
H
L
L
L
H
RECEIVER
DIFFERENTIAL INPUTS
A–B
OUTPUT
R
VID 0.2 V
H
– 0.2 V < VID < 0.2 V
?
VID – 0.2 V
L
Open
?
H = high level, L = low level, ? = indeterminate
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.
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
Copyright © 1998, Texas Instruments Incorporated
1




 SN75179B
SN75179B
DIFFERENTIAL DRIVER AND RECEIVER PAIR
SLLS003E – OCTOBER 1985 – REVISED JUNE 1998
logic symbol
2
R
3
D
8
A
7
B
6
Z
5
Y
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
logic diagram (positive logic)
2
R
3
D
8
A
7
B
6Z
5Y
schematics of inputs and outputs
EQUIVALENT OF DRIVER INPUT
VCC
TYPICAL OF ALL DRIVER OUTPUTS
VCC
Input
Output
Driver input: R(eq) = 3 kNOM
R(eq) = equivalent resistor
EQUIVALENT OF EACH RECEIVER INPUT
VCC
Input
16.8 k
NOM
960
NOM
960
NOM
GND
TYPICAL OF ALL RECEIVER OUTPUTS
VCC
85
NOM
Output
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265




 SN75179B
SN75179B
DIFFERENTIAL DRIVER AND RECEIVER PAIR
SLLS003E – OCTOBER 1985 – REVISED JUNE 1998
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Voltage range at any bus terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 10 V to 15 V
Differential input voltage, VID (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 25 V
Package thermal impedance, θJA (see Note 3): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197°C/W
P package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104°C/W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltage values, except differential input voltage, are with respect to network ground terminal.
2. Differential input voltage is measured at the noninverting input with respect to the corresponding inverting input.
3. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace
length of zero.
recommended operating conditions
MIN NOM MAX UNIT
Supply voltage, VCC
High-level input voltage, VIH
Low-level input voltage, VIL
Common-mode input voltage, VIC
Differential input voltage, VID
High-level output current, IOH
Driver
Driver
Driver
Receiver
4.75
5 5.25 V
2
V
0.8 V
–7‡
12 V
± 12 V
– 60 mA
– 400 µA
Low-level output current, IOL
Driver
Receiver
60
mA
8
Operating free-air temperature, TA
0
70 °C
The algebraic convention, where the less positive (more negative) limit is designated minimum, is used in this data sheet for common-mode input
voltage and threshold voltage.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
3




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