SP488A/489ADS/07

SP488A/489A High Speed Quad RS-485/RS-422 Line Receivers

© Copyright 2000 Sipex Corporation

3

AC PARAMETERS

V

PARAMETER

MIN.

TYP.

MAX.

UNIT

CONDITIONS

PROPAGATION DELAY

Receiver Input to Output

C

Low to HIGH (t

TBD

ns

High to LOW (t

TBD

ns

Differential Receiver Skew (t

TBD

ns

Receiver Rise Time (t

10% to 90%

SP488A

TBD

ns

SP489A

TBD

ns

Receiver Fall Time (t

90% to 10%

SP488A

TBD

ns

SP489A

TBD

ns

RECEIVER ENABLE

To Output HIGH

TBD

ns

C

(S2 closed)

To Output LOW

TBD

ns

CL = 15pF;

Figures 2 and 4

(S1 closed)

RECEIVER DISABLE

From Output LOW

TBD

ns

CL = 15pF;

Figures 2 and 4

(S1 closed)

From Output HIGH

TBD

ns

CL = 15pF;

Figures 2 and 4

(S2 closed)

Figure 2. Receiver Enable/Disable Timing

3V

0V

5V

0V

Output normally low

EN

1.5V

1.5V

1.5V

0.5V

1.5V

0.5V

Output normally high

RO

RO

Figure 1. Receiver Propagation Delays

0V

0V

1.5V

RO

1.5V

Input A–B