SN75ALS171 Datasheet, PDF (10/19 Pages) Texas Instruments – TRIPLE DIFFERENTIAL BUS TRANSCEIVERS

SN75ALS171, SN75ALS171A
TRIPLE DIFFERENTIAL BUS TRANSCEIVERS
SLLS056D – AUGUST 1987 – REVISED SEPTEMBER 1995
PARAMETER MEASUREMENT INFORMATION
5V
S1
0V
RL1 = 165 Ω
CL = 60 pF
(see Note B)
Generator
(see Note A)
50 Ω
RL ₂ = 75 Ω
3V
5V
RL ₃ = 165 Ω
0 V _S2
TEST CIRCUIT
Output
CL = 60 pF
(see Note B)
Input
td(ODH)
1.5 V
1.5 V
3 V S1 to 5 V
S2 to 0 V
0V
td(ODL)
Output ^{0 V}
10%
tt(OD)
90% 90%
≈ 2.9 V
0V
10% _{≈ – 2.9 V}
tt(OD)
VOLTAGE WAVEFORMS
Input
td(ODH)
1.5 V
1.5 V
3 V S1 to 0 V
S2 to 5 V
0V
td(ODL)
Output ^{0 V}
10%
tt(OD)
90% 90%
≈ 2.3 V
0V
10% _{≈ – 2.9 V}
tt(OD)
VOLTAGE WAVEFORMS
NOTES: A. The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, 50% duty cycle, tr ≤ 6 ns, tf ≤ 6 ns,
ZO = 50 Ω.
B. CL includes probe and jig capacitance.
Figure 6. Driver Test Circuit and Voltage Waveforms
With Double-Differential-SCSI Termination for the Load
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