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SN75ALS056 PDF预览

SN75ALS056

更新时间： 2024-09-20 09:12:11
品牌 Logo 应用领域
德州仪器 - TI 总线收发器
页数 文件大小 规格书
15页 236K
描述
TRAPEZOIDAL-WAVEFORM INTERFACE BUS TRANSCEIVERS

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SN75ALS056 数据手册

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SN75ALS056, SN75ALS057  
TRAPEZOIDAL-WAVEFORM INTERFACE BUS TRANSCEIVERS  
SLLS028G – AUGUST 1987 – REVISED JUNE 1998  
SN75ALS056 . . . DW OR N PACKAGE  
Suitable for IEEE Standard 896  
Applications  
(TOP VIEW)  
†
SN75ALS056 is an Octal Transceiver  
SN75ALS057 is a Quad Transceiver  
A1  
A2  
A3  
A4  
B1  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
17  
16  
B2  
B3  
High-Speed Advanced Low-Power Schottky  
(ALS) Circuitry  
B4  
V
GND  
CC  
A5  
Low Power Dissipation:  
52.5 mW/Channel Max  
15 B5  
14  
13  
12  
11  
A6  
A7  
A8  
B6  
B7  
B8  
T/R  
High-Impedance pnp Inputs  
Logic-Level 1-V Bus Swing Reduces Power  
Consumption  
CS  
Trapezoidal Bus Output Waveform Reduces  
Noise Coupling to Adjacent Lines  
SN75ALS057 . . . DW OR N PACKAGE  
(TOP VIEW)  
Power-Up/Power-Down Protection  
(Glitch Free)  
D1  
R1  
D2  
R2  
B1  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
17  
16  
Open-Collector Driver Outputs Allow  
Wired-OR Connections  
E1  
B2  
Designed to Be a Faster, Lower-Power  
Functional Equivalent of National DS3896,  
DS3897  
E2  
V
GND  
CC  
D3  
15 B3  
14  
13  
12  
11  
R3  
D4  
R4  
TE  
E3  
B4  
E4  
RE  
description  
The SN75ALS056 is an eight-channel,  
monolithic, high-speed, advanced low-power  
Schottky (ALS) device designed for two-way data  
communication in  
a
densely populated  
backplane. The SN75ALS057 is a four-channel  
version with independent driver-input (Dn) and  
receiver-output (Rn) pins and a separate driver  
disable for each driver (En).  
These transceivers feature open-collector driver outputs with series Schottky diodes to reduce capacitive  
loading to the bus. By using a 2-V pullup termination on the bus, the output signal swing is approximately 1 V,  
which reduces the power necessary to drive the bus load capacitance. The driver outputs generate trapezoidal  
waveforms that reduce crosstalk between channels. The drivers are capable of driving an equivalent dc load  
as low as 18.5 Ω. The receivers have internal low-pass filters to further improve noise immunity.  
The SN75ALS056 and SN75ALS057 are 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.  
†
The transceivers are suitable for IEEE Standard 896 applications to the extent of the operating conditions and characteristics specified in this  
data sheet.  
Copyright 1998, 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.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...15

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