GD65232 Datasheet, PDF (7/18 Pages) Texas Instruments – MULTIPLE RS-232 DRIVERS AND RECEIVERS

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GD65232, GD75232
MULTIPLE RSĆ232 DRIVERS AND RECEIVERS
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SLLS206J − MAY 1995 − REVISED NOVEMBER 2004
PARAMETER MEASUREMENT INFORMATION
IOS(L)
VDD
VCC
VDD or GND
−IOS(H)
VSS or GND
VI
VO
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
Input
CL
(see Note B)
Output
1.5 V
90%
tPHL
50%
10%
tTHL
1.5 V
50%
10%
3V
tPLH
90%
0V
VOH
VOL
tTLH
TEST CIRCUIT
VOLTAGE WAVEFORMS
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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