Datasheet

SN75ALS1177, SN75ALS1178
DUAL DIFFERENTIAL DRIVERS AND RECEIVERS
SLLS154B – MARCH 1993 – REVISED FEBRUARY 2001
10
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
RECEIVER VOLTAGE WAVEFORMS
t
PHZ
3 V
0 V
Input
t
PLZ
RECEIVER TEST CIRCUIT
1N916 or
Equivalent
S2
1 kΩ
S3
1 kΩ
S1
–1.5 V
1.5 V
50 Ω
Output
V
CC
Output
0 V
V
OH
0.5 V
5 V
V
OL
0.5 V
t
PZH
t
PZL
S1 to –1.5 V
S2 Closed
S3 Closed
S1 to –1.5 V
S2 Closed
S3 Closed
S1 to 1.5 V
S2 Open
S3 Closed
S1 to 1.5 V
S2 Open
S3 Closed
Generator
(see Note B)
NOTES: A. C
L
includes probe and jig capacitance.
B. The pulse generator has the following characteristics: PRR ≤ 1 MHz, 50% duty cycle, t
r
≤ 10 ns, t
f
≤ 10 ns.
C
L
(see Note A)
1.5 V 1.5 V
1.5 V
1.5 V
Figure 7. Receiver Output Enable and Disable Times