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DIFFERENTIAL DRIVERS/RECEIVERS. SN751177 Datasheet

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DIFFERENTIAL DRIVERS/RECEIVERS. SN751177 Datasheet






SN751177 DRIVERS/RECEIVERS. Datasheet pdf. Equivalent




SN751177 DRIVERS/RECEIVERS. Datasheet pdf. Equivalent





Part

SN751177

Description

DUAL DIFFERENTIAL DRIVERS/RECEIVERS



Feature


SN751177, SN751178 DUAL DIFFERENTIAL DRI VERS AND RECEIVERS SLLS059D – FEBRUA RY 1990 – REVISED MAY 1999 D Meet or Exceed the Requirements of ANSI Standa rds TIA/EIA-422-B and TIA/EIA-485-A and ITU Recommendations V.10 and V.11 D De signed for Multipoint Bus Transmission on Long Bus Lines in Noise Environments D Driver Positive- and Negative-Curren t Limiting D Thermal S.
Manufacture

Texas Instruments

Datasheet
Download SN751177 Datasheet


Texas Instruments SN751177

SN751177; hutdown Protection D Driver 3-State Outp uts D Receiver Common-Mode Input Voltag e Range of –12 V to 12 V D Receiver I nput Sensitivity . . . ±200 mV D Recei ver Hysteresis . . . 50 mV Typ D Receiv er Input Impedance . . . 12 kΩ Min D Receiver 3-State Outputs (SN751177 Only ) D Operate From Single 5-V Supply desc ription The SN751177 and SN751178 dual differential drivers an.


Texas Instruments SN751177

d receivers are monolithic integrated ci rcuits that are designed for balanced m ultipoint bus transmission at rates up to 10 Mbit/s. They are designed to impr ove the performance of full-duplex data communications over long bus lines and meet ANSI Standards TIA/EIA-422-B and TIA/EIA-485-A and ITU Recommendations V .10 and V.11. SN751177 . . . N OR NS PACKAGE (TOP VIEW).


Texas Instruments SN751177

1B 1 1A 2 1R 3 RE 4 2R 5 2A 6 2B 7 GND 8 16 VCC 15 1D 14 1Y 13 1Z 12 DE 11 2 Z 10 2Y 9 2D SN751178 . . . N OR NS† PACKAGE (TOP VIEW) 1B 1 1A 2 1R 3 1DE 4 2R 5 2A 6 2B 7 GND 8 16 VCC 15 1D 1 4 1Y 13 1Z 12 2DE 11 2Z 10 2Y 9 2D † The NS package is only available taped and reeled. The SN751177 and SN751178 driver outputs provide limiting for bo th positive and negati.

Part

SN751177

Description

DUAL DIFFERENTIAL DRIVERS/RECEIVERS



Feature


SN751177, SN751178 DUAL DIFFERENTIAL DRI VERS AND RECEIVERS SLLS059D – FEBRUA RY 1990 – REVISED MAY 1999 D Meet or Exceed the Requirements of ANSI Standa rds TIA/EIA-422-B and TIA/EIA-485-A and ITU Recommendations V.10 and V.11 D De signed for Multipoint Bus Transmission on Long Bus Lines in Noise Environments D Driver Positive- and Negative-Curren t Limiting D Thermal S.
Manufacture

Texas Instruments

Datasheet
Download SN751177 Datasheet




 SN751177
SN751177, SN751178
DUAL DIFFERENTIAL DRIVERS AND RECEIVERS
SLLS059D – FEBRUARY 1990 – REVISED MAY 1999
D Meet or Exceed the Requirements of ANSI
Standards TIA/EIA-422-B and TIA/EIA-485-A
and ITU Recommendations V.10 and V.11
D Designed for Multipoint Bus Transmission
on Long Bus Lines in Noise Environments
D Driver Positive- and Negative-Current
Limiting
D Thermal Shutdown Protection
D Driver 3-State Outputs
D Receiver Common-Mode Input Voltage
Range of –12 V to 12 V
D Receiver Input Sensitivity . . . ±200 mV
D Receiver Hysteresis . . . 50 mV Typ
D Receiver Input Impedance . . . 12 kMin
D Receiver 3-State Outputs (SN751177 Only)
D Operate From Single 5-V Supply
description
The SN751177 and SN751178 dual differential
drivers and receivers are monolithic integrated
circuits that are designed for balanced multipoint
bus transmission at rates up to 10 Mbit/s. They are
designed to improve the performance of
full-duplex data communications over long bus
lines and meet ANSI Standards TIA/EIA-422-B
and TIA/EIA-485-A and ITU Recommendations
V.10 and V.11.
SN751177 . . . N OR NS† PACKAGE
(TOP VIEW)
1B 1
1A 2
1R 3
RE 4
2R 5
2A 6
2B 7
GND 8
16 VCC
15 1D
14 1Y
13 1Z
12 DE
11 2Z
10 2Y
9 2D
SN751178 . . . N OR NS† PACKAGE
(TOP VIEW)
1B 1
1A 2
1R 3
1DE 4
2R 5
2A 6
2B 7
GND 8
16 VCC
15 1D
14 1Y
13 1Z
12 2DE
11 2Z
10 2Y
9 2D
The NS package is only available taped and reeled.
The SN751177 and SN751178 driver outputs provide limiting for both positive and negative currents and
thermal-shutdown protection from line-fault conditions on the transmission bus line.
The receiver features high input impedance of at least 12 k, an input sensitivity of ±200 mV over a
common-mode input voltage range of –12 V to 12 V, and typical input hysteresis of 50 mV. Fail-safe design
ensures that if the receiver inputs are open, the receiver outputs always will be high.
The SN751177 and SN751178 are characterized for operation from –20°C to 85°C.
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 © 1999, Texas Instruments Incorporated
1




 SN751177
SN751177, SN751178
DUAL DIFFERENTIAL DRIVERS AND RECEIVERS
SLLS059D – FEBRUARY 1990 – REVISED MAY 1999
Function Tables
SN751177, SN751178
(each driver)
INPUT ENABLE
D
DE
OUTPUTS
Y
Z
H
H
H
L
L
H
L
H
X
L
Z
Z
H = high level, L = low level, X = irrelevant,
Z = high impedance (off)
SN751177
(each receiver)
DIFFERENTIAL INPUTS ENABLE OUTPUT
A–B
RE
R
VID 0.2 V
L
H
–0.2 V < VID < 0.2 V
L
?
VID –0.2 V
L
L
X
H
Z
Open
L
H
H = high level, L = low level, ? = indeterminate,
X = irrelevant, Z = high impedance (off)
SN751178
(each receiver)
DIFFERENTIAL INPUTS OUTPUT
A–B
R
VID 0.2 V
–0.2 V < VID < 0.2 V
VID –0.2 V
H = high level, L =
? = indeterminate
H
?
L
low level,
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265




 SN751177
SN751177, SN751178
DUAL DIFFERENTIAL DRIVERS AND RECEIVERS
SLLS059D – FEBRUARY 1990 – REVISED MAY 1999
logic symbols
logic diagrams (positive logic)
12
DE
4
RE
15
1D
3
1R
9
2D
5
2R
SN751177
EN1
EN2
1
1
2
1
1
2
14
1Y
13
1Z
2
1A
1
1B
10
2Y
11
2Z
6
2A
7
2B
4
1DE
15
1D
3
1R
12
2DE
9
2D
5
2R
SN751178
EN
EN
14
1Y
13
1Z
2
1A
1
1B
10
2Y
11
2Z
6
2A
7
2B
These symbols are in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
12
DE
4
RE
15
1D
3
1R
9
2D
2R 5
SN751177
4
1DE
15
1D
1R 3
12
2DE
9
2D
2R 5
SN751178
14 1Y
13 1Z
2
1A
1
1B
10
2Y
11 2Z
6
2A
7
2B
14 1Y
13 1Z
2
1A
1
1B
10 2Y
11 2Z
6
2A
7 2B
schematics of inputs
EQUIVALENT OF DRIVER OR ENABLE INPUT
VCC
R(eq)
EQUIVALENT OF RECEIVER INPUT
VCC
Input
Input
Driver Input: R(eq) = 6 kNOM
Enable Input: R(eq) = 4 kNOM
R(eq) = Equivalent Resistor
All resistor values are nominal.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
3



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