SN54HC08, SN74HC08
QUADRUPLE 2-INPUT POSITIVE-AND GATES
www.ti.com
SCLS081F–DECEMBER 1982–REVISED JANUARY 2007
PARAMETER MEASURMENT INFORMATION
VCC
0 V
Test
Point
From Output
Under Test
Input
50%
50%
CL = 50 pF
(see Note A)
tPHL
tPLH
VOH
VOL
90%
90%
In-Phase
Output
50%
10%
50%
10%
LOAD CIRCUIT
tr
tf
VCC
0 V
tPHL
90%
tPLH
90%
90%
50%
10%
50%
10%
VOH
VOL
Input
90%
Out-of-Phase
Output
50%
10%
50%
10%
tr
tf
tf
tr
VOLTAGE WAVEFORMS
INPUT RISE AND FALL TIMES
VOLTAGE WAVEFORMS
PROPAGATION DELAY AND OUTPUT TRANSITION TIMES
NOTES: A. CL includes probe and test-fixture capacitance.
B. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following
characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 6 ns, tf = 6 ns.
C. The outputs are measured one at a time with one input transition per measurement.
D. tPLH and tPHL are the same as tpd.
Figure 1. Load Circuit and Voltage Waveforms
5
Submit Documentation Feedback
TI [ TEXAS INSTRUMENTS ]
