GD75232

MULTIPLE RS-232 DRIVERS AND RECEIVERS

SLLS206C – MAY 1995 – REVISED JULY 1998

8

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

VI

VDD

VCC

VSS

VIT, VI

VDD

VCC

VSS

IOL

VOH

–IOH

VOL

Pulse

Generator

See Note A

CL

(see Note B)

RL

4 V

0 V

50%

50%

Input

t PHL

t PLH

90%

50%

10%

50%

10%

90%

t THL

t TLH

VOH

VOL

TEST CIRCUIT

VOLTAGE WAVEFORMS

Input

VSS

VDD

VCC

Output

NOTES: A.

The pulse generator has the following characteristics: tw = 25 µs, PRR = 20 kHz, ZO = 50 Ω, tr = tf < 50 ns.

B.

CL includes probe and jig capacitance.

Figure 6. Receiver Propagation and Transition Times