SN65C3243 Datasheet, PDF (10/17 Pages) Texas Instruments – 3-V TO 5.5-V MULTICHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER

SN65C3243, SN75C3243
ą
3ĆV TO 5.5ĆV MULTICHANNEL RSĆ232 COMPATIBLE LINE DRIVER/RECEIVER
ą
SLLS353G − JUNE 1999 − REVISED NOVEMBER 2004
PARAMETER MEASUREMENT INFORMATION
Generator
(see Note B)
50 Ω
Auto-
powerdown
FORCEOFF
DIN
FORCEON
TEST CIRCUIT
ROUT
Receiver
Input
INVALID
CL = 30 pF
(see Note A)
DOUT
INVALID
Output
V+
Supply
Voltages
V−
2.7 V
−2.7 V
3V
2.7 V
0V
0V
−2.7 V
−3 V
tinvalid
50% VCC
tvalid
50% VCC
VCC
0V
ten
≈V+
0.3 V
VCC
0V
0.3 V
≈V−
VOLTAGE WAVEFORMS
Valid RS-232 Level, INVALID High
2.7 V
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{0.3 V}
Indeterminate
0V
ÎÎÎÎÎÎÎÎÎÎÎ ^{−0.3 V}
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{−2.7 V}
If Signal Remains Within This Region
For More Than 30 µs, INVALID Is Low†
Indeterminate
Valid RS-232 Level, INVALID High
† _{Auto-powerdown disables drivers and reduces}
supply current to 1 µA.
NOTES: A. CL includes probe and jig capacitance.
B. The pulse generator has the following characteristics: PRR = 5 kbit/s, ZO = 50 Ω, 50% duty cycle, tr ≤ 10 ns, tf ≤ 10 ns.
Figure 5. INVALID Propagation Delay Times and Supply Enabling Time
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