Datasheet

SN65176B, SN75176B
DIFFERENTIAL BUS TRANSCEIVERS
SLLS101D – JULY 1985 – REVISED APRIL 2003
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
VOLTAGE WAVEFORMS
t
PHZ
1.5 V
2.3 V
0.5 V
0 V
3 V
t
PZH
Output
Input
1.5 V
S1
0 V or 3 V
Output
C
L
= 50 pF
(see Note A)
TEST CIRCUIT
50 Ω
V
OH
V
off
≈0 V
R
L
= 110 Ω
Generator
(see Note B)
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
= 50 Ω.
Figure 4. Driver Test Circuit and Voltage Waveforms
VOLTAGE WAVEFORMS
5 V
V
OL
0.5 V
t
PZL
3 V
0 V
t
PLZ
2.3 V
1.5 V
Output
Input
TEST CIRCUIT
Output
R
L
= 110 Ω
5 V
S1
C
L
= 50 pF
(see Note A)
50 Ω
3 V or 0 V
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
= 50 Ω.
Figure 5. Driver Test Circuit and Voltage Waveforms
VOLTAGE WAVEFORMS
1.3 V
0 V
3 V
V
OL
V
OH
t
PHL
t
PLH
1.5 V
Output
Input
TEST CIRCUIT
C
L
= 15 pF
(see Note A)
Output
0 V
1.5 V
51 Ω
Generator
(see Note B)
1.5 V
1.3 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
= 50 Ω.
Figure 6. Receiver Test Circuit and Voltage Waveforms