GD75232 Datasheet, PDF (7/12 Pages) Texas Instruments – MULTIPLE RS-232 DRIVERS AND RECEIVERS

GD75232
MULTIPLE RS-232 DRIVERS AND RECEIVERS
SLLS206C – MAY 1995 – REVISED JULY 1998
PARAMETER MEASUREMENT INFORMATION
IOS(L)
VDD
VCC
VI
VO
VDD or GND
– IOS(H)
VSS or GND
RL = 3 kΩ
VSS
Figure 1. Driver Test Circuit for V_OH, V_OL, I_OS(H), and I_OS(L)
IIH
VI
– IIL
VI
VDD
VCC
VSS
Figure 2. Driver Test Circuit for I_IH and I_IL
VDD
Input _VCC
Pulse
Generator
See Note A
RL
VSS
TEST CIRCUIT
Input
CL
(see Note B)
Output
1.5 V
90%
t _THL
t _PHL
50%
10%
1.5 V
50%
10%
VOLTAGE WAVEFORMS
3V
t _PLH
90%
0V
VOH
VOL
t _TLH
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
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