SP490E Просмотр технического описания (PDF) - Signal Processing Technologies

Номер в каталоге

Компоненты Описание

Список матч

SP490E

Enhanced Full Duplex RS-485 Transceivers

Signal Processing Technologies 

+3V

DI

0V

Z

DRIVER

OUTPUT Y

DIFFERENTIAL VO+

OUTPUT 0V

VY – VZ VO–

tSKEW = | tDPLH - tDPHL |

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

1.5V

VO 1/2VO

tPLH

tPHL

tDPLH

tDPHL

tR

1.5V

1/2VO

tF

Figure 5. Driver Propagation Delays

+3V

DE

0V

5V

AY, , BZ

VOL

VOH

AY, , BZ

0V

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

1.5V

tZL

2.3V Output normally LOW

2.3V Output normally HIGH

tZH

1.5V

tLZ

0.5V

0.5V

tHZ

Figure 6. Driver Enable and Disable Times

V0D2+

Y–Z

V0D2–

VOH

R

VOL

tPHL

tSKEW = | tPHL - tPLH |

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

0V

INPUT

1.5V

OUTPUT

tPLH

Figure 7. Receiver Propagation Delays

0V

1.5V

SP490EDS/14

SP490E Enhanced Full Duplex RS-485 Transceivers

4

© Copyright 2000 Sipex Corporation

Share Link: