SN75LP196 Datasheet, PDF (7/8 Pages) Texas Instruments – LOW-POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS

SN75LP196
LOW-POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS
SLLS294A – APRIL 1998 – REVISED JUNE 1999
PARAMETER MEASUREMENT INFORMATION
Inputs
II
VI
Outputs
IO
CL
VO
tw
VI
50%
4V
50%
0V
tPLH
tPHL
VO
50%
10%
tTLH
90% 90%
VOH
50%
10% _VOL
tTHL
NOTES: A. The pulse generator has the following characteristics: tw = 4 µs, PRR = 250 kbit/s, ZO = 50 Ω, tr = tf < 50 ns.
B. CL includes probe and jig capacitance.
Figure 4. Receiver Parameter Test Circuit and Waveform
Inputs
II
VI
Outputs
IO
VCC
GND
VO
Figure 5. Receiver I_OS Test
APPLICATION INFORMATION
Diodes placed in series with the V_DD and V_SS leads protect the SN75LP196 in the fault condition in which the device
outputs are shorted to ±15 V and the power supplies are at low voltage and provide low-impedance paths to ground
(see Figure 6).
VDD
Output
SN75LP196 Output
SN75LP196
VSS
Figure 6. Power-Supply Protection to Meet Power-Off Fault Conditions of EIA/TIA-232-F
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