Philips Semiconductors
Product specification
8-bit serial-in/parallel-out shift register
74HC/HCT164
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard
ICC category: MSI
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 ∆ICC per input, multiply this value by the unit load coefficient shown in the table below.
INPUT
UNIT LOAD COEFFICIENT
Dsa, Dsb
CP
MR
0.25
0.60
0.90
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
TEST CONDITIONS
74HCT
SYMBOL PARAMETER
UNIT
WAVEFORMS
VCC
(V)
+25
−40 to +85
−40 to +125
min. typ. max. min. max. min. max.
tPHL/ tPLH propagation delay
CP to Qn
17
19
7
36
38
15
45
48
19
54
57
22
ns
ns
ns
ns
ns
ns
ns
ns
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
Fig.6
Fig.6
Fig.6
Fig.6
Fig.6
Fig.6
Fig.6
Fig.6
Fig.6
tPHL
propagation delay
MR to Qn
t
THL/ tTLH output transition time
tW
tW
trem
tsu
th
clock pulse width
HIGH or LOW
18
18
16
12
4
7
23
23
20
15
4
27
27
24
18
4
master reset pulse
width; LOW
10
7
removal time
MR to CP
set-up time
Dsa, Dsb to CP
6
hold time
−2
55
Dsa, Dsb to CP
fmax
maximum clock pulse 27
frequency
22
18
MHz 4.5
December 1990
6
NXP [ NXP ]
