Datasheet
SN55ALS194, SN75ALS194
QUADRUPLE DIFFERENTIAL LINE DRIVERS
SLLS009D – OCTOBER 1985 – REVISED MAY 1995
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
TEST CIRCUIT
VOLTAGE WAVEFORMS
200 Ω
S3
5 V
See Note C
50 Ω
0 V or 3 V
Output
S1
1 kΩ
Output
Enable
Input
1.5 V
V
OL
0 V
t
PHZ
0.5 V
0.5 V
t
PLZ
V
OH
3 V
Output
S1 Closed
S2 Closed
Output
S1 Closed
S2 Closed
≈ 1.5 V
Output
Enable
Input
1.5 V
V
OL
0 V
t
PZL
t
PZH
V
OH
3 V
Output
S1 Closed
S2 Open
Output
S1 Open
S2 Closed
S2
Generator
(see Note A)
C
L
= 15 pF
(see Note B)
1.5 V
≈ 1.5 V
1.5 V
1.5 V
NOTES: A. The input pulse is supplied by a generator having the following characteristics: t
r
≤ 5 ns, t
f
≤ 5 ns, PRR ≤ 1 MHz, duty cycle ≤ 50%,
Z
O
≈ 50 Ω.
B. C
L
includes probe and stray capacitance.
C. All diodes are 1N916 or 1N3064.
Figure 4. Driver Test Circuit and Voltage Waveforms