GD75232

MULTIPLE RS-232 DRIVERS AND RECEIVERS

SLLS206C – MAY 1995 – REVISED JULY 1998

7

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

IOS(L)

–IOS(H)

VSS

VDD

VCC

VI

VO

VDD or GND

VSS or GND

RL = 3 kΩ

–IIL

IIH

VSS

VDD

VCC

VI

VI

Pulse

Generator

See Note A

CL

(see Note B)

RL

3 V

0 V

1.5 V

1.5 V

Input

t PHL

t PLH

90%

50%

10%

50%

10%

90%

t THL

t TLH

VOH

VOL

TEST CIRCUIT

VOLTAGE WAVEFORMS

Input

Output

VSS

VCC

VDD

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 3. Driver Test Circuit and Voltage Waveforms