GD65232, GD75232
MULTIPLE RS 232 DRIVERS AND RECEIVERS
SLLS206J − MAY 1995 − REVISED NOVEMBER 2004
PARAMETER MEASUREMENT INFORMATION
VDD
VCC
VI
VSS
Figure 4. Receiver Test Circuit for I
OS
VDD
VCC
VIT,
VI
VOH
VOL
IOL
−IOH
VSS
Figure 5. Receiver Test Circuit for V
IT
, V
OH
, and V
OL
4V
VDD
Input V
CC
Pulse
Generator
See Note A
VSS
TEST CIRCUIT
Input
50%
50%
0V
tPHL
RL
CL
(see Note B)
90%
Output
50%
10%
tTHL
VOLTAGE WAVEFORMS
50%
10%
tPLH
90%
VOH
VOL
tTLH
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
8
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
