SP481RCN Ver la hoja de datos (PDF) - Signal Processing Technologies

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SP481RCN

1/10th Unit Load RS-485 Transceiver

Signal Processing Technologies 

+3V

DE

0V

5V

A, B

VOL

VOH

A, B

0V

f = 1MHz; tR < 10ns; tF < 10ns

1.5V

tZL

2.3V Output normally LOW

2.3V Output normally HIGH

tZH

Figure 6. Driver Enable and Disable Times

1.5V

tLZ

0.5V

0.5V

tHZ

V0D2+

A–B

V0D2–

VOH

RECEIVER OUT

VOL

tPHL

tSKEW = | tPHL - tPLH |

f = 1MHz; tR < 10ns; tF < 10ns

0V

INPUT

1.5V

OUTPUT

tPLH

0V

1.5V

Figure 7. Receiver Propagation Delays

+3V

RE

0V

5V

RECEIVER OUT

VIL

VIH

RECEIVER OUT

0V

1.5V f = 1MHz; tR < 10ns; tF < 10ns

tZL

1.5V Output normally LOW

1.5V

tLZ

0.5V

1.5V Output normally HIGH

tZH

0.5V

tHZ

Figure 8. Receiver Enable and Disable Times

Date: 6/21/04

SP485R RS-485 Serial Transceiver

5

© Copyright 2004 Sipex Corporation

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