Datasheet > LTC488

LTC488

更新时间： 2023-12-20 18:43:59

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
12页	131K
描述
四通道 RS485 线路接收器

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数据手册

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LTC488 数据手册

LTC488/LTC489

TEST CIRCUITS

100pF

DRIVER

RECEIVER

54Ω

100pF

4889 F01

Figure 1. Receiver Timing Test Circuit

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

f = 1MHz, Duty Cycle = 50%, t < 10ns, t ≤ 10ns, Z

= 50Ω

OUT

RECEIVER

OUTPUT

4889 F02

Figure 2. Receiver Enable and Disable Timing Test Circuit

SWITCHING TIME WAVEFORMS

INPUT

f = 1MHz; t ≤ 10ns; t ≤ 10ns

OD2

INPUT

A, B

–V

OD2

PHL

PLH

1.5V

4889 F03

Figure 3. Receiver Propagation Delays

f = 1MHz; t ≤ 10ns; t ≤ 10ns

EN OR

EN12

1.5V

OUTPUT NORMALLY LOW

OUTPUT NORMALLY HIGH

0.5V

1.5V

4889 F04

Figure 4. Receiver Enable and Disable Times

4889fb

1...3 4 567 8 9...12

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