7

Rev. 07/16/02

SP481/483/485 Low Power Half-Duplex RS485 Transceivers

© Copyright 2002 Sipex Corporation

+3V

0V

DE

5V

A, B

0V

1.5V

1.5V

A, B

2.3V

2.3V

0.5V

0.5V

Output normally LOW

Output normally HIGH

+3V

0V

RE

5V

R

0V

1.5V

1.5V

R

1.5V

1.5V

0.5V

0.5V

Output normally LOW

Output normally HIGH

Figure 9. Receiver Enable and Disable Times

Figure 8. Receiver Propagation Delays

Figure 7. Driver Enable and Disable Times

R

1.5V

1.5V

OUTPUT

A – B

0V

0V

INPUT