Philips Semiconductors
Product specification
4-bit parallel access shift register
74HC/HCT195
DC CHARACTERISTICS FOR HCT
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
PE
all others
0.65
0.35
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
18
17
7
32
35
15
40
44
19
48
53
22
ns
ns
ns
ns
ns
ns
ns
ns
ns
4.5 Fig.6
tPHL
propagation delay
MR to Qn
4.5 Fig.8
t
THL/ tTLH output transition time
4.5 Fig.6
tW
tW
trem
tsu
tsu
th
clock pulse width
HIGH or LOW
20
16
16
20
16
3
6
25
20
20
25
20
3
30
24
24
30
24
3
4.5 Fig.6
master reset pulse width
LOW
6
4.5 Fig.8
removal time
MR to CP
6
4.5 Fig.8
set-up time
J, K, PE to CP
12
6
4.5 Figs 8 and 9
4.5 Figs 8 and 9
4.5 Figs 8 and 9
set-up time
Dn to CP
hold time
−5
52
J, K, PE, Dn to CP
fmax
maximum clock pulse
frequency
27
22
18
MHz 4.5 Fig.6
December 1990
7
NXP [ NXP ]
