AM26LS31C, AM26LS31M
QUADRUPLE DIFFERENTIAL LINE DRIVER
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SLLS114I–JANUARY 1979–REVISED FEBRUARY 2006
PARAMETER MEASUREMENT INFORMATION
Input A
(see Notes B
and C)
3 V
0 V
1.3 V
1.3 V
Test Point
V
CC
t
t
PHL
PLH
V
OH
180 Ω
1.5 V
Output Y
t
S1
S2
From Output
Under Test
V
OL
Skew
Skew
t
75 Ω
C
L
PHL
PLH
(see Note A)
V
V
OH
1.5 V
Output Z
OL
PROPAGATION DELAY TIMES AND SKEW
Enable G
TEST CIRCUIT
3 V
0 V
(see Note D)
Enable G
1.5 V
1.5 V
See Note D
t
t
PLZ
PZL
S1 Closed
S2 Closed
≈4.5 V
Waveform 1
(see Note E)
S1 Closed
S2 Open
≈1.5 V
1.5 V
V
OL
0.5 V
0.5 V
t
t
PHZ
PZH
V
OH
S1 Open
S2 Closed
Waveform 2
(see Note E)
≈1.5 V
1.5 V
≈0 V
S1 Closed
S2 Closed
ENABLE AND DISABLE TIME WAVEFORMS
NOTES: A. C includes probe and jig capacitance.
L
B. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, Z ≈ 50 Ω, t ≤ 15 ns, t ≤ 6 ns.
O
r
f
C. When measuring propagation delay times and skew, switches S1 and S2 are open.
D. Each enable is tested separately.
E. Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control.
Figure 1. Test Circuit and Voltage Waveforms
5
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