Datasheet

SN65ALS1176
DIFFERENTIAL BUS TRANSCEIVER
SLLS295A – APRIL 1998 – REVISED DECEMBER 1999
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
V
OD2
V
OC
R
L
2
R
L
2
Figure 1. Driver V
OD2
and V
OC
Test Circuit
V
OD3
V
test
375 Ω
375 Ω
60 Ω
Figure 2. Driver V
OD3
Test Circuit
TEST CIRCUIT VOLTAGE WAVEFORMS
3 V
0 V
≈ –2.5 V
50%
10%
t
t(OD)
t
t(OD)
t
d(ODL)
50%
10%
90%90%
1.5 V
t
d(ODH)
Output
Input
Output
3 V
50 Ω
R
L
= 54 Ω
≈2.5 V
Generator
(see Note B)
C
L
= 50 pF
(see Note A)
1.5 V
(see Note C)
(see Note C)
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
=50Ω.
C. t
d(OD)
= t
d(ODH)
or t
d(ODL)
Figure 3. Driver Differential-Output Delay and Transition Times