SN54HC02, SN74HC02
QUADRUPLE 2-INPUT POSITIVE-NOR GATES
SCLS076E – DECEMBER 1982 – REVISED AUGUST 2003
PARAMETER MEASUREMENT INFORMATION
From Output
Under Test
Test
Point
CL = 50 pF
(see Note A)
In-Phase
Output
Input
VCC
50%
tPLH
50%
10%
tPHL
Out-of-Phase
Output
90%
50%
10%
tf
90%
tr
Input
50%
10%
90%
90%
VCC
50%
10% 0 V
tf
tPLH
50%
10%
90%
tr
50%
0V
tPHL
90%
VOH
50%
10%
VOL
tf
VOH
VOL
LOAD CIRCUIT
tr
VOLTAGE WAVEFORM
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
4
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