LTC489CS datasheet(5/12 Pages) LINER

部件名	LTC489CS

功能描述	Quad RS485 Line Receiver

PDF	12 Pages

Scroll/Zoom	100%

制造商	LINER [Linear Technology]

网页	http://www.linear.com

标志

5 / 12 page

LTC488/LTC489

LTC488

LTC489

DIFFERENTIAL

ENABLES

OUTPUT

A – B

EN12 or EN34

VID ≥ 0.2V

–0.2V < VID < 0.2V

VID ≤ 0.2V

H: High Level

L: Low Level

X: Irrelevant

?: Indeterminate

Z: High Impedance (Off)

FU CTIO TABLES

DIFFERENTIAL

ENABLES

OUTPUT

A – B

VID ≥ 0.2V

–0.2V < VID < 0.2V

VID ≤ 0.2V

TEST CIRCUITS

Figure 1. Receiver Timing Test Circuit

Note:

The input pulse is supplied by a generator having the following characteristics:

f = 1MHz, Duty Cycle = 50%, tr < 10ns, tf ≤ 10ns, ZOUT = 50Ω

488/9 F01

DRIVER

RECEIVER

Ω

100pF

Figure 2. Receiver Enable and Disable Timing Test Circuit

488/9 F02

VCC

RECEIVER

OUTPUT

LTC489CS 数据表(PDF) 5 Page - Linear Technology

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