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BUS TRANSCEIVERS. 75ALS176A Datasheet

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BUS TRANSCEIVERS. 75ALS176A Datasheet
















75ALS176A TRANSCEIVERS. Datasheet pdf. Equivalent













Part

75ALS176A

Description

DIFFERENTIAL BUS TRANSCEIVERS



Feature


SN65ALS176, SN75ALS176, SN75ALS176A, SN7 5ALS176B DIFFERENTIAL BUS TRANSCEIVERS D Meet or Exceed the Requirements of T IA/EIA-422-B, TIA/EIA-485-A† and ITU Recommendations V.11 and X.27 D Operate at Data Rates up to 35 Mbaud D Four Sk ew Limits Available: SN65ALS176 . . . 1 5 ns SN75ALS176 . . . 10 ns SN75ALS176A . . . 7.5 ns SN75ALS176B . . . 5 ns D Designed for Multipo.
Manufacture

Texas Instruments

Datasheet
Download 75ALS176A Datasheet


Texas Instruments 75ALS176A

75ALS176A; int Transmission on Long Bus Lines in No isy Environments D Low Supply-Current R equirements . . . 30 mA Max D Wide Posi tive and Negative Input/Output Bus-Volt age Ranges D Thermal Shutdown Protectio n D Driver Positive and Negative Curren t Limiting D Receiver Input Hysteresis D Glitch-Free Power-Up and Power-Down P rotection D Receiver Open-Circuit Fail- Safe Design SLLS0.


Texas Instruments 75ALS176A

40H – AUGUST 1987 – REVISED JUNE 200 0 D OR P PACKAGE (TOP VIEW) R1 RE 2 DE 3 D4 8 VCC 7B 6A 5 GND description The SN65ALS176 and SN75ALS176 series di fferential bus transceivers are designe d for bidirectional data communication on multipoint bus transmission lines. T hey are designed for balanced transmiss ion lines and meet TIA/EIA-422-B, TIA/E IA-485-A, and ITU Reco.


Texas Instruments 75ALS176A

mmendations V.11 and X.27. The SN65ALS17 6 and SN75ALS176 series combine a 3-sta te, differential line driver and a diff erential input line receiver, both of w hich operate from a single 5-V power su pply. The driver and receiver have acti ve-high and active-low enables, respect ively, that can be connected together e xternally to function as a direction co ntrol. The driver .





Part

75ALS176A

Description

DIFFERENTIAL BUS TRANSCEIVERS



Feature


SN65ALS176, SN75ALS176, SN75ALS176A, SN7 5ALS176B DIFFERENTIAL BUS TRANSCEIVERS D Meet or Exceed the Requirements of T IA/EIA-422-B, TIA/EIA-485-A† and ITU Recommendations V.11 and X.27 D Operate at Data Rates up to 35 Mbaud D Four Sk ew Limits Available: SN65ALS176 . . . 1 5 ns SN75ALS176 . . . 10 ns SN75ALS176A . . . 7.5 ns SN75ALS176B . . . 5 ns D Designed for Multipo.
Manufacture

Texas Instruments

Datasheet
Download 75ALS176A Datasheet




 75ALS176A
SN65ALS176, SN75ALS176, SN75ALS176A, SN75ALS176B
DIFFERENTIAL BUS TRANSCEIVERS
D Meet or Exceed the Requirements of
TIA/EIA-422-B, TIA/EIA-485-Aand ITU
Recommendations V.11 and X.27
D Operate at Data Rates up to 35 Mbaud
D Four Skew Limits Available:
SN65ALS176 . . . 15 ns
SN75ALS176 . . . 10 ns
SN75ALS176A . . . 7.5 ns
SN75ALS176B . . . 5 ns
D Designed for Multipoint Transmission on
Long Bus Lines in Noisy Environments
D Low Supply-Current Requirements
. . . 30 mA Max
D Wide Positive and Negative Input/Output
Bus-Voltage Ranges
D Thermal Shutdown Protection
D Driver Positive and Negative Current
Limiting
D Receiver Input Hysteresis
D Glitch-Free Power-Up and Power-Down
Protection
D Receiver Open-Circuit Fail-Safe Design
SLLS040H – AUGUST 1987 – REVISED JUNE 2000
D OR P PACKAGE
(TOP VIEW)
R1
RE 2
DE 3
D4
8 VCC
7B
6A
5 GND
description
The SN65ALS176 and SN75ALS176 series differential bus transceivers are designed for bidirectional data
communication on multipoint bus transmission lines. They are designed for balanced transmission lines and
meet TIA/EIA-422-B, TIA/EIA-485-A, and ITU Recommendations V.11 and X.27.
The SN65ALS176 and SN75ALS176 series combine a 3-state, differential line driver and a differential input line
receiver, both of which operate from a single 5-V power supply. The driver and receiver have active-high and
active-low enables, respectively, that can be connected together externally to function as a direction control.
The driver differential outputs and the receiver differential inputs are connected internally to form a differential
input/output (I/O) bus port that is designed to offer minimum loading to the bus when the driver is disabled or
VCC = 0. This port features wide positive and negative common-mode voltage ranges, making the device
suitable for party-line applications.
The SN65ALS176 is characterized for operation from –40°C to 85°C. The SN75ALS176 series is characterized
for operation from 0°C to 70°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.
These devices meet or exceed the requirements of TIA/EIA-485-A, except for the Generator Contention Test (para. 3.4.2) and the Generator
Current Limit (para. 3.4.3). The applied test voltage ranges are –6 V to 8 V for the SN75ALS176, SN75ALS176A, and SN75ALS176B and
–4 V to 8 V for the SN65ALS180.
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.
Copyright © 2000, Texas Instruments Incorporated
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
1




 75ALS176A
SN65ALS176, SN75ALS176, SN75ALS176A, SN75ALS176B
DIFFERENTIAL BUS TRANSCEIVERS
SLLS040H – AUGUST 1987 – REVISED JUNE 2000
AVAILABLE OPTIONS
PACKAGED DEVICES
TA
tsk(lim)† SMALL OUTLINE PLASTIC DIP
(D)‡
(P)
0°C to 70°C
10
SN75ALS176D
SN75ALS176P
7.5
SN75ALS176AD SN75ALS176AP
5
SN75ALS176BD SN75ALS176BP
–40°C to 85°C
15
SN65ALS176D
SN65ALS176P
This is the maximum range that the driver or receiver delay times vary over
temperature, VCC, and process (device to device).
The D package is available taped and reeled. Add the suffix R to the device
type (e.g., SN75ALS176DR).
Function Tables
DRIVER
INPUT ENABLE
D
DE
OUTPUTS
A
B
H
H
H
L
L
H
L
H
X
L
Z
Z
H = high level, L = low level, X = irrelevant,
Z = high impedance
RECEIVER
DIFFERENTIAL
INPUTS
A–B
ENABLE OUTPUT
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
Inputs open
L
H
H = high level, L = low level, X = irrelevant,
Z = high impedance
logic symbol§
3
DE
EN1
2
RE
EN2
4
D
1
R
1
1
2
6
A
7
B
logic diagram (positive logic)
DE 3
D4
RE 2
R1
6A
7 B Bus
§ This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265




 75ALS176A
SN65ALS176, SN75ALS176, SN75ALS176A, SN75ALS176B
DIFFERENTIAL BUS TRANSCEIVERS
schematics of inputs and outputs
SLLS040H – AUGUST 1987 – REVISED JUNE 2000
EQUIVALENT OF EACH INPUT
VCC
R(eq)
Input
TYPICAL OF A AND B I/O PORTS
VCC
180 k
NOM
Connected
on A Port
3 k
NOM
A or B
TYPICAL OF RECEIVER OUTPUT
85 VCC
NOM
Output
Driver Input: R(eq) = 3 kNOM
Enable Inputs: R(eq) = 8 kNOM
R(eq) = equivalent resistor
18 k
NOM
180 k
NOM
Connected
on B Port
1.1 k
NOM
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –7 V to 12 V
Enable input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Package thermal impedance, θJA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W
P package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85°C/W
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°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 I/O bus voltage, are with respect to network ground terminal.
2. The package thermal impedance is calculated in accordance with JESD 51.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
3




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