Datasheet

December 1990 5
Philips Semiconductors Product specification
Quad 2-input NOR gate 74HC/HCT02
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications” .
Output capability: standard
I
CC
category: SSI
Notes to HCT types
The value of additional quiescent supply current (∆I
CC
) for a unit load of 1 is given in the family specifications.
To determine ∆I
CC
per input, multiply this value by the unit load coefficient shown in the table below.
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
r
=t
f
= 6 ns; C
L
= 50 pF
AC WAVEFORMS
PACKAGE OUTLINES
See
“74HC/HCT/HCU/HCMOS Logic Package Outlines” .
INPUT UNIT LOADCOEFFICIENT
nA, nB 1.50
SYMBOL PARAMETER
T
amb
(°C) TEST CONDITIONS
74HCT
UNIT
V
CC
(V)
WAVEFORMS
+25 −40 to+85 −40 to+125
min. typ. max. min. max. min. max.
t
PHL
/ t
PLH
propagation delay
nA, nB to nY
11 19 24 29 ns 4.5 Fig.6
t
THL
/ t
TLH
output transition time 7 15 19 22 ns 4.5 Fig.6
Fig.6 Waveforms showing the input (nA, nB) to output (nY) propagation delays and the output transition times.
HC: V
M
= 50%; V
I
= GND to V
CC
HCT: V
M
= 1.3 V; V
I
= GND to 3 V.