Datasheet

SN65ALS176, SN75ALS176, SN75ALS176A, SN75ALS176B
DIFFERENTIAL BUS TRANSCEIVERS
SLLS040H – AUGUST 1987 – REVISED JUNE 2000
10
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
TEST CIRCUIT VOLTAGE WAVEFORMS
V
OL
t
PLZ
t
PZL
5 V
0.5 V
2.3 V
0 V
3 V
1.5 V
1.5 V
5 V
Output
Input
Output
S1
0 V or 3 V
50 Ω
R
L
= 110 Ω
Generator
(see Note B)
C
L
= 50 pF
(see Note A)
NOTES: A. C
L
includes probe and jig capacitance.
B. The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, 50% duty cycle, t
r
≤ 6 ns, t
f
≤ 6 ns,
Z
O
=50Ω.
Figure 5. Driver Test Circuit and Voltage Waveforms
–I
OH
V
OH
+I
OL
V
OL
V
ID
Figure 6. Receiver V
OH
and V
OL
Test Circuit
TEST CIRCUIT VOLTAGE WAVEFORMS
V
OL
V
OH
3 V
0 V
t
PHL
(see Note C)
t
PLH
(see Note C)
Output
Input
1.5 V
1.3 V
51 Ω
Output
0 V
1.5 V
Generator
(see Note B)
C
L
= 15 pF
(see Note A)
1.5 V
1.3 V
NOTES: A. C
L
includes probe and jig capacitance.
B. The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, 50% duty cycle, t
r
≤ 6 ns, t
f
≤ 6 ns,
Z
O
=50Ω.
C. t
pd
= t
PLH
or t
PHL
Figure 7. Receiver Test Circuit and Voltage Waveforms