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DS36C278

更新时间： 2024-11-04 22:49:07

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
10页	164K
描述
Low Power Multipoint EIA-RS-485 Transceiver

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中文翻译

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DS36C278 数据手册

July 1998

DS36C278

Low Power Multipoint EIA-RS-485 Transceiver

General Description

Features

n 100% RS-485 compliant

The DS36C278 is a low power differential bus/line trans-

ceiver designed to meet the requirements of RS-485 stan-

dard for multipoint data transmission. In addition it is compat-

ible with TIA/EIA-422-B.

— Guaranteed RS-485 device interoperation

n Low power CMOS design: I_CC500 µA max

n Built-in power up/down glitch-free circuitry

— Permits live transceiver insertion/displacement

n DIP and SOIC packages available

n Industrial temperature range: −40˚C to +85˚C

n On-board thermal shutdown circuitry

— Prevents damage to the device in the event of

excessive power dissipation

The CMOS design offers significant power savings over its

bipolar and ALS counterparts without sacrificing ruggedness

against ESD damage. The device is ideal for use in battery

powered or power conscious applications. I_CCis specified at

500 µA maximum.

The driver and receiver outputs feature TRI-STATE^®capabil-

ity. The driver outputs operate over the entire common mode

range of −7V to +12V. Bus contention or fault situations that

cause excessive power dissipation within the device are

handled by a thermal shutdown circuit, which forces the

driver outputs into the high impedance state.

n Wide common mode range: −7V to +12V

n Receiver open input fail-safe (Note 1)

⁄

unit load (DS36C278): ≥128 nodes

unit load (DS36C278T): ≥64 nodes

n ESD (human body model): ≥2 kV

n Drop in replacement for:

— LTC485, MAX485, DS75176, DS3695

The receiver incorporates a fail safe circuit which guarantees

a high output state when the inputs are left open. (Note 1)

The DS36C278T is fully specified over the industrial tem-

perature range (−40˚C to +85˚C).

Connection and Logic Diagram

Truth Table

DRIVER SECTION

RE*

DO/RI

DO*/RI*

RECEIVER SECTION

RE*

RI-RI*

DS012040-1

≥+0.2V

≤−0.2V

Order Number DS36C278TM, DS36C278TN,

DS36C278M, DS36C278N

See NS Package Number M08A or N08E

OPEN (Note 1)

Note 1: Non-terminated, open input only

TRI-STATE^®is a registered trademark of National Semiconductor Corporation.

DS012040

www.national.com

12 3 4 5 6 7...10

中文翻译

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与DS36C278相关器件

型号	品牌	获取价格	描述	数据表
DS36C278_14	TI	获取价格	DS36C278 Low Power Multipoint EIA-RS-485 Transceiver
DS36C278M	NSC	获取价格	Low Power Multipoint EIA-RS-485 Transceiver
DS36C278M	TI	获取价格	LINE TRANSCEIVER, PDSO8, PLASTIC, SOIC-8
DS36C278M/NOPB	NSC	获取价格	IC LINE TRANSCEIVER, PDSO8, PLASTIC, SOIC-8, Line Driver or Receiver
DS36C278M/NOPB	TI	获取价格	DS36C278 Low Power Multipoint EIA-RS-485 Transceiver
DS36C278MDC	NSC	获取价格	IC LINE TRANSCEIVER, UUC, DIE, Line Driver or Receiver
DS36C278MWC	NSC	获取价格	IC LINE TRANSCEIVER, UUC, WAFER, Line Driver or Receiver
DS36C278MX	NSC	获取价格	IC LINE TRANSCEIVER, PDSO8, 0.150 INCH, PLASTIC, SOIC-8, Line Driver or Receiver
DS36C278MX/NOPB	NSC	获取价格	IC LINE TRANSCEIVER, PDSO8, 0.150 INCH, PLASTIC, SOIC-8, Line Driver or Receiver
DS36C278MX/NOPB	TI	获取价格	DS36C278 Low Power Multipoint EIA-RS-485 Transceiver

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