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SN65LBC184DR PDF预览

SN65LBC184DR

更新时间: 2024-11-18 17:15:35
品牌 Logo 应用领域
友台半导体 - UMW /
页数 文件大小 规格书
15页 228K
描述
RS-485 / RS-422芯片

SN65LBC184DR 数据手册

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R
SN75LBC184/  
SN65LBC184  
UMW  
(TOP VIEW)  
D
D
Integrated Transient Voltage Suppression  
ESD Protection for Bus Terminals Exceeds:  
30 kV IEC 61000-4-2, Contact Discharge  
15 kV IEC 61000-4-2, Air-Gap Discharge  
15 kV EIA/JEDEC Human Body Model  
R
RE  
DE  
D
V
CC  
B
1
2
3
4
8
7
6
5
A
GND  
D
D
D
Circuit Damage Protection of 400-W Peak  
(Typical) Per IEC 61000-4-5  
Controlled Driver Output-Voltage Slew  
Rates Allow Longer Cable Stub Lengths  
functional logic diagram (positive logic)  
3
DE  
250-kbps in Electrically Noisy  
Environments  
4
D
D
Open-Circuit Fail-Safe Receiver Design  
D
1/4 Unit Load Allows for 128 Devices  
Connected on Bus  
D
D
D
Thermal Shutdown Protection  
Power-Up/-Down Glitch Protection  
Each Transceiver Meets or Exceeds the  
Requirements of TIA/EIA-485 (RS-485) and  
ISO/IEC 8482:1993(E) Standards  
D
D
D
Low Disabled Supply Current 300 µA Max  
Pin Compatible With SN75176  
Applications:  
2
RE  
− Industrial Networks  
− Utility Meters  
− Motor Control  
6
A
B
1
Bus  
R
7
description  
The SN75LBC184 and SN65LBC184 are differ-  
ential data line transceivers in the trade-standard  
footprint of the SN75176 with built-in protection  
against high-energy noise transients. This feature  
provides a substantial increase in reliability for  
better immunity to noise transients coupled to the  
data cable over most existing devices. Use of  
these circuits provides a reliable low-cost  
direct-coupled (with no isolation transformer) data  
line interface without requiring any external  
components.  
V
V
P
1/2 V  
P
1.2 µs  
t
50 µs  
The SN75LBC184 and SN65LBC184 can with-  
stand overvoltage transients of 400-W peak  
(typical). The conventional combination wave  
called out in IEC 61000-4-5 simulates the  
overvoltage transient and models a unidirectional  
surge caused by overvoltages from switching and  
secondary lightning transients.  
Figure 1. Surge Waveform — Combination Wave  
www.umw-ic.com  
1
友台半导体有限公司  

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