Datasheet

SN75179B
DIFFERENTIAL DRIVER AND RECEIVER PAIR
SLLS003E – OCTOBER 1985 – REVISED JUNE 1998
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION (CONTINUED)
t
t(OD)
t
t(OD)
50%50%
10%
90%
t
d(OD)
t
d(OD)
Output
Input
≈ 2.5 V
0 V
3 V
1.5 V1.5 V
Output
C
L
= 50 pF
(see Note B)
R
L
= 54 Ω
50 Ω
≈ – 2.5 V
TEST CIRCUIT VOLTAGE WAVEFORMS
Generator
(see Note A)
NOTES: A. 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
= 50 Ω.
B. C
L
includes probe and jig capacitance.
Figure 3. Driver Test Circuit and Voltage Waveforms
VOLTAGE WAVEFORMSTEST CIRCUIT
V
OL
V
OH
1.3 V
t
PHL
t
PLH
1.5 V
50 Ω
Output
Input
0 V
3 V
1.5 V
Output
Generator
(see Note A)
C
L
= 50 pF
(see Note B)
1.5 V
1.3 V
NOTES: A. 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
= 50 Ω.
B. C
L
includes probe and jig capacitance.
Figure 4. Receiver Test Circuit and Voltage Waveforms