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SN65LBC179Q PDF预览

SN65LBC179Q

更新时间： 2024-11-23 22:59:15
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德州仪器 - TI 驱动器
页数 文件大小 规格书
12页 170K
描述
LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS

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SN65LBC179Q 数据手册

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SN75LBC179, SN65LBC179, SN65LBC179Q  
LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS  
SLLS173C – JANUARY 1994 – REVISED JANUARY 2000  
D OR P PACKAGE  
(TOP VIEW)  
Designed for High-Speed Multipoint Data  
Transmission Over Long Cables  
Operate With Pulse Widths as Low  
as 30 ns  
V
A
B
Z
Y
1
2
3
4
8
7
6
5
CC  
R
Low Supply Current . . . 5 mA Max  
D
Meets or Exceeds the Standard  
Requirements of ANSI RS-485 and  
ISO 8482:1987(E)  
GND  
Function Tables  
Common-Mode Voltage Range of –7 V  
to 12 V  
DRIVER  
INPUT  
D
OUTPUTS  
Positive- and Negative-Output Current  
Limiting  
Y
Z
H
L
H
L
L
H
Driver Thermal Shutdown Protection  
Pin Compatible With the SN75179B  
RECEIVER  
DIFFERENTIAL INPUTS OUTPUT  
description  
A–B  
≥ 0.2 V  
R
H
?
L
H
The SN65LBC179, SN65LBC179Q,  
and  
V
ID  
–0.2 V < V < 0.2 V  
SN75LBC179differential driver and receiver pairs  
are monolithic integrated circuits designed for  
bidirectional data communication over long  
cables that take on the characteristics of  
transmission lines. They are balanced, or  
differential, voltage mode devices that meet or  
exceed the requirements of industry standards  
ANSI RS-485 and ISO 8482:1987(E). Both  
devices are designed using TI’s proprietary  
LinBiCMOS with the low power consumption of  
CMOS and the precision and robustness of  
bipolar transistors in the same circuit.  
ID  
≤ – 0.2 V  
V
ID  
Open circuit  
H = high level,  
? = indeterminate  
L = low level,  
†
logic symbol  
8
7
2
3
A
B
R
D
6
5
Z
Y
The SN65LBC179, SN65LBC179Q,  
and  
SN75LBC179 combine a differential line driver  
and differential line receiver and operate from a  
single 5-V supply. The driver differential outputs  
and the receiver differential inputs are connected  
to separate terminals for full-duplex operation and  
are designed to present minimum loading to the  
†
This symbol is in accordance with ANSI/IEEE Std 91-1984  
and IEC Publication 617-12.  
logic diagram (positive logic)  
8
2
A
B
bus when powered off (V  
= 0). These parts  
CC  
R
D
7
feature a wide common-mode voltage range  
making them suitable for point-to-point or  
multipoint data bus applications. The devices also  
provide positive- and negative-current limiting  
andthermalshutdownforprotectionfromlinefault  
conditions. Thelinedrivershutsdownatajunction  
temperature of approximately 172°C.  
5
6
3
Y
Z
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.  
LinBiCMOS is a trademark of Texas Instruments Incorporated.  
Copyright 2000, 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...12

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 		低功耗差分线路驱动器和接收器对 | D | 14 | -40 to 85

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