December 1990 5
Philips Semiconductors Product specification
8-input NAND gate 74HC/HCT30
DC CHARACTERISTICS FOR 74 HC
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=50pF
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
.
Output capability: standard 
ICC category: SSI
Note to HCT types
The value of additional quiescent supply current (∆ICC) 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=tf
= 6 ns; CL=50pF
SYMBOL PARAMETER
T
amb
(°C)
UNIT
TEST CONDITIONS
74HC
V
CC
(V)
WAVEFORMS+25 −40 to + 85 −40 to +125
min. typ. max. min. max. min. max.
t
PHL
/ t
PLH
propagation delay
A, B, C, D, E, F, G, H to Y
41 
15 
12
130 
26 
22
165 
33 
28
195 
39 
33
ns 2.0
4.5
6.0
Fig.6
t
THL
/ t
TLH
output transition time 19
7 
6
75 
15 
13
95 
19 
16
110 
22 
19
ns 2.0
4.5
6.0
Fig.6
INPUT UNIT LOAD COEFFICIENT
A, B, C, D, E, F, G, H 0.60
SYMBOL PARAMETER
T
amb
(°C)
UNIT
TEST CONDITIONS
74HCT
V
CC
(V)
WAVEFORMS+25 −40 to + 85
−40
to +125
min. typ. max. min. max. min. max.
t
PHL
/ t
PLH
propagation delay
A, B, C, D, E, F, G, H to Y
16 28 35 42 ns 4.5 Fig.6
t
THL
/ t
TLH
output transition time 7 15 19 22 ns 4.5 Fig.6