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SN75ALS170_08

更新时间： 2024-09-20 04:31:15
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
21页 571K
描述
TRIPLE DIFFERENTIAL BUS TRANSCEIVER

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SN75ALS170_08 数据手册

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SN75ALS170, SN75ALS170A  
TRIPLE DIFFERENTIAL BUS TRANSCEIVER  
SLLS055D – AUGUST 1987 – REVISED SEPTEMBER 1995  
DW PACKAGE  
(TOP VIEW)  
Three Bidirectional Transceivers  
Driver Meets or Exceeds ANSI Standard  
EIA/TIA-422-B and RS-485 and ITU  
Recommendation V.11  
1D  
1DIR  
NC  
GND  
NC  
2D  
2DIR  
NC  
1B  
1A  
NC  
NC  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
17  
16  
Two Skew Limits Available  
Designed to Operate Up to 20 Million Data  
Transfers per Second (FAST-20 SCSI)  
V
CC  
High-Speed Advanced Low-Power Schottky  
Circuitry  
15 2B  
14  
13  
12  
11  
2A  
3B  
3A  
NC  
Designed for Multipoint Transmission on  
Long Bus Lines in Noisy Environments  
3D  
3DIR  
Wide Positive and Negative Input/Output  
Bus Voltage Ranges  
NC – No internal connection  
Driver Output Capacity . . . ±60 mA  
J PACKAGE  
(TOP VIEW)  
Thermal Shutdown Protection  
Driver Positive- and Negative-Current  
Limiting  
1D  
1DIR  
GND  
2D  
1B  
1A  
V
1
2
3
4
5
6
7
14  
13  
12  
Receiver Input Impedances . . . 12 kΩ Min  
Receiver Input Sensitivity . . . ±300 mV Max  
Receiver Input Hysteresis . . . 60 mV Typ  
Operate From a Single 5-V Supply  
CC  
11 2B  
10 2A  
2DIR  
3D  
9
8
3B  
3A  
Glitch-Free Power-Up and Power-Down  
Protection  
3DIR  
Feature Independent Direction Controls for  
Each Channel  
description  
The SN75ALS170 and SN75ALS170A triple differential bus transceivers are monolithic integrated circuits  
designed for bidirectional data communication on multipoint bus transmission lines. It is designed for balanced  
transmission lines and the driver meets ANSI Standards EIA/TIA-422-B and RS-485 and both the driver and  
receiver meet ITU Recommendation V.11. The SN75ALS170A is designed for FAST-20 SCSI and can transmit  
or receive data pulses as short as 30 ns with a maximum skew of 5 ns.  
The SN75ALS170 and SN75ALS170A operate from a single 5-V power supply. The drivers and receivers have  
active-high and active-low enables, respectively, which are internally connected together to function as a  
direction control. The driver differential outputs and the receiver differential inputs are connected internally to  
form differential input/output (I/O) bus ports that are designed to offer minimum loading to the bus when the  
driver is disabled or V  
making the device suitable for party-line applications.  
= 0. These ports feature wide positive and negative common-mode voltage ranges  
CC  
The SN75ALS170 and the SN75ALS170A are characterized for operation from 0°C to 70°C.  
AVAILABLE OPTIONS  
SKEW LIMIT  
10 ns  
PART NUMBER  
SN75ALS170DW SN75ALS170J  
SN75ALS170ADW  
5 ns  
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.  
Copyright 1995, 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...21

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SN75ALS170ADWRG4 TI

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SN75ALS170DW TI

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SN75ALS170DWE4 TI

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