Datasheet

SN65ALS176, SN75ALS176, SN75ALS176A, SN75ALS176B
DIFFERENTIAL BUS TRANSCEIVERS
SLLS040H – AUGUST 1987 – REVISED JUNE 2000
11
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
TEST CIRCUIT
VOLTAGE WAVEFORMS
2 kΩ
5 V
S3
1N916 or Equivalent
5 kΩ
50 Ω
S1
1.5 V
– 1.5 V
t
PZL
1.5 V
1.5 V
3 V
0 V
V
OL
t
PZH
1.5 V
1.5 V
S1 to 1.5 V
S2 Open
S3 Closed
Input
0 V
3 V
Output
0 V
V
OH
V
OL
0.5 V
1.5 V
0 V
3 V
t
PLZ
V
OH
t
PHZ
3 V
0 V
0.5 V
Input
Output
≈1.3 V
Input
Output
Input
Output
≈4.5 V
≈1.3 V
C
L
= 15 pF
(see Note A)
Generator
(see Note B)
1.5 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.
Output
S2
S1 to 1.5 V
S2 Closed
S3 Closed
S1 to –1.5 V
S2 Closed
S3 Open
S1 to –1.5 V
S2 Closed
S3 Closed
Figure 8. Receiver Test Circuit and Voltage Waveforms