Datasheet

SN75ALS172A
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS121D – AUGUST 1990 – REVISED APRIL 1998
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
V
OC
R
L
2
R
L
2
V
OD2
Figure 1. Differential and Common-Mode Output Voltages
VOLTAGE WAVEFORMSTEST CIRCUIT
Output Y
Output Z
Input
0 V
3 V
t
d(ODL)
t
d(ODH)
3 V
Generator
(see Note A)
C
L
= 50 pF
(see Note B)
C
L
R
L
=
54 Ω
50 Ω
Y
Z
1.5 V 1.5 V
NOTES: A. The input pulse is supplied by a generator having the following characteristics: PRR = 1 MHz, Z
O
= 50 Ω, duty cycle = 50%, t
f
≤ 5 ns,
t
r
≤ 5 ns.
B. C
L
includes probe and stray capacitance.
Figure 2. Differential Output Test Circuit and Voltage Waveforms
t
PZH
0.5 V
R
L
= 110 Ω
0 V or 3 V
Output
V
OH
Output
VOLTAGE WAVEFORMSTEST CIRCUIT
50 Ω
Input
0 V
3 V
Generator
(see Note A)
t
PHZ
S1
V
off
≈ 0
C
L
= 50 pF
(see Note B)
1.5 V 1.5 V
2.3 V
NOTES: A. The input pulse is supplied by a generator having the following characteristics: PRR = 1 MHz, Z
O
= 50 Ω, duty cycle = 50%, t
f
≤ 5 ns,
t
r
≤ 5 ns.
B. C
L
includes probe and stray capacitance.
C. To test the active-low enable G
, ground G and apply an inverted input waveform to G.
3 V
(see Note C)
Figure 3. Test Circuit and Voltage Waveforms, t
PZH
and t
PHZ