Philips Semiconductors
Product specification
Dual 4-input NAND gate
74HC/HCT20
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard
ICC category: SSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
TEST CONDITIONS
74HC
SYMBOL
PARAMETER
UNIT VCC WAVEFORMS
(V)
+25
−40 to +85
−40 to +125
min. typ. max. min. max. min. max.
tPHL/ tPLH propagation delay
nA, nB, nC, nD to nY
28
10
8
90
18
15
115
23
20
135
27
23
ns
ns
2.0
4.5
6.0
Fig.7
Fig.7
t
THL/ tTLH output transition time
19
7
6
75
15
13
95
19
16
110
22
19
2.0
4.5
6.0
December 1990
5
NXP [ NXP ]
