Philips Semiconductors
Product specification
8-bit parallel-in/serial-out shift register
74HC/HCT165
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
CE, CP to Q7, Q7
17
20
14
7
34
40
28
15
43
50
35
19
51
60
42
22
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
4.5 Fig.6
4.5 Fig.6
4.5 Fig.6
4.5 Fig.6
4.5 Fig.6
4.5 Fig.6
4.5 Fig.6
4.5 Fig.6
4.5 Fig.6
4.5 Fig.6
4.5 Fig.6
4.5 Fig.6
t
PHL/ tPLH propagation delay
PL to Q7, Q7
t
PHL/ tPLH propagation delay
D7 to Q7, Q7
tTHL/ tTLH output transition time
tW
clock pulse width
HIGH or LOW
16
20
20
20
20
20
7
6
20
25
25
25
25
25
9
24
30
30
30
30
30
11
0
tW
parallel load pulse
width; LOW
9
trem
tsu
tsu
tsu
th
removal time
PL to CP, CE
8
set-up time
Ds to CP, CE
2
set-up time
CE to CP; CP to CE
7
set-up time
Dn to PL
10
−1
−7
44
hold time
Ds to CP, CE; Dn to PL
th
hold time
0
0
CE to CP, CP to CE
fmax
maximum clock pulse
frequency
26
21
17
MHz 4.5 Fig.6
December 1990
8
NXP [ NXP ]
