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DS3695TJ

更新时间： 2024-02-23 06:29:24

品牌	Logo	应用领域
美国国家半导体 - NSC		驱动器接口集成电路
页数	文件大小	规格书
10页	251K
描述
Multipoint RS485/RS422 Transceivers/Repeaters

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中文翻译

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数据手册

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DS3695TJ 数据手册

March 1996

DS3695/DS3695T/DS3696/DS3696T/DS3697/DS3698

Multipoint RS485/RS422 Transceivers/Repeaters

General Description

The DS3695, DS3696, DS3697 and DS3698 are high speed

differential TRI-STATE bus/line transceivers/repeaters

designed to meet the requirements of EIA standard RS485

Features

Meets EIA standard RS485 for multipoint bus transmis-

sion and is compatible with RS-422

15 ns driver propagation delays with 2 ns skew (typical)

7V to 12V bus common mode range permits 7V

ground difference between devices on the bus

with extended common mode range ( 12V to 7V), for

multipoint data transmission.

Single 5V supply

The driver and receiver outputs feature TRI-STATE capabili-

ty. The driver outputs remain in TRI-STATE over the entire

Thermal shutdown protection

7V. Bus faults that

common mode range of

12V to

High impedance to bus with driver in TRI-STATE or

with power off, over the entire common mode range al-

lows the unused devices on the bus to be powered

down

cause excessive power dissipation within the device trigger

a thermal shutdown circuit, which forces the driver outputs

into the high impedance state. The DS3696 and DS3698

provide an output pin TS (thermal shutdown) which reports

the occurrence of the thermal shutdown of the device. This

is an ‘‘open collector’’ pin with an internal 10 kX pull-up

resistor. This allows the line fault outputs of several devices

to be wire OR-ed.

Combined impedance of a driver output and receiver in-

put is less than one RS485 unit load, allowing up to 32

transceivers on the bus

70 mV typical receiver hysteresis

Both AC and DC specifications are guaranteed over the 0 C

to 70 C temperature and 4.75V to 5.25V supply voltage

range.

Connection and Logic Diagrams

TL/F/10408–1

TL/F/10408–12

Top View

TL/F/10408–13

TL/F/10408–14

Top View

Order Number DS3695N, DS3696N, DS3697N, DS3698N,

DS3695TN, DS3696TN, DS3695TJ or DS3696TJ

See NS Package Number J08A or N08E

Note: TS pin was LF (Line Fault) in previous datasheets and reports the occurrence of a thermal shutdown of the device.

TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.

1996 National Semiconductor Corporation

TL/F/10408

RRD-B30M76/Printed in U. S. A.

http://www.national.com

12 3 4 5 6 7...10

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