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SN65LBC174A_07-12

更新时间： 2024-11-19 04:51:15
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德州仪器 - TI 驱动器
页数 文件大小 规格书
21页 577K
描述
QUADRUPLE RS- 485 DIFFERENTAIL LINE DRIVERS

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SN65LBC174A_07-12 数据手册

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SLLS446C − OCTOBER 2000 − REVISED MAY 2003  
D
D
D
D
Designed for TIA/EIA-485, TIA/EIA-422 and  
ISO 8482 Applications  
D
D
Driver Positive- and Negative-Current  
Limiting  
†
Signaling Rates up to 30 Mbps  
Power-Up and Power-Down Glitch-Free for  
Line Insertion Applications  
Propagation Delay Times < 11 ns  
D
Thermal Shutdown Protection  
Low Standby Power Consumption  
1.5 mA Max  
D
Industry Standard Pin-Out, Compatible  
With SN75174, MC3487, DS96174, LTC487,  
and MAX3042  
D
Output ESD Protection Exceeds 13 kV  
description  
The SN65LBC174A and SN75LBC174A are quadruple differential line drivers with 3-state outputs, designed  
for TIA/EIA-485 (RS-485), TIA/EIA-422 (RS-422), and ISO 8482 applications.  
These devices are optimized for balanced multipoint bus transmission at signalling rates up to 30 million bits  
per second. The transmission media may be printed-circuit board traces, backplanes, or cables. The ultimate  
rate and distance of data transfer is dependent upon the attenuation characteristics of the media and the noise  
coupling to the environment.  
N PACKAGE  
(TOP VIEW)  
16-DW PACKAGE  
(TOP VIEW)  
logic diagram (positive logic)  
2
1Y  
1
2
3
4
5
6
7
8
16  
1
4
7
1A  
1Y  
1Z  
V
CC  
4A  
4Y  
4Z  
3,4EN  
3Z  
3Y  
1A  
1Y  
V
CC  
4A  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
1A  
1,2EN  
2A  
3
15  
14  
13  
12  
11  
10  
9
1Z  
1Z  
4Y  
6
5
2Y  
2Z  
1,2EN  
2Z  
2Y  
2A  
GND  
1,2EN  
2Z  
4Z  
3,4EN  
2Y  
11 3Z  
10 3Y  
10  
11  
3Y  
3Z  
9
2A  
3A  
3,4EN  
4A  
3A  
GND  
9
3A  
12  
15  
14  
13  
4Y  
4Z  
20-DW PACKAGE  
(TOP VIEW)  
logic diagram (positive logic)  
2
1
2
3
4
5
6
7
8
9
10  
20  
1A  
1Y  
NC  
1Z  
V
CC  
4A  
4Y  
NC  
4Z  
3,4EN  
3Z  
NC  
3Y  
1Y  
1
1A  
19  
18  
17  
16  
15  
14  
13  
12  
11  
4
1Z  
5
1,2EN  
8
2Y  
9
2A  
1,2EN  
2Z  
NC  
2Y  
2A  
GND  
6
2Z  
12  
3Y  
11  
3A  
14  
3Z  
15  
3,4EN  
3A  
18  
4Y  
19  
4A  
16  
4Z  
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 signaling rate of a line is the number of voltage transitions that are made per second expressed in the units bps (bits per second).  
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Copyright 2001 − 20003, Texas Instruments Incorporated  
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1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...21

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