Philips Semiconductors
Product specification
8-bit shift register with input flip-flops
74HC/HCT597
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard
ICC category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
TEST CONDITIONS
74HC
SYMBOL
PARAMETER
UNIT
WAVEFORMS
VCC
(V)
+25
−40 to +85 −40 to +125
min. typ. max. min. max. min. max.
tPHL/ tPLH propagation delay
SHCP to Q
55
20
16
175
35
30
220
44
37
265
53
45
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
2.0 Fig.7
4.5
6.0
tPHL
propagation delay
MR to Q
58
21
17
175
35
30
220
44
37
265
53
45
2.0 Fig.8
4.5
6.0
t
t
t
PHL/ tPLH propagation delay
80
29
23
250
50
43
315
63
54
375
75
64
2.0 Fig.7
4.5
6.0
STCP to Q
PHL/ tPLH propagation delay
PL to Q
69
25
20
215
43
37
270
54
46
325
65
55
2.0 Fig.9
4.5
6.0
THL/ tTLH output transition time
19
7
6
75
15
13
95
19
16
110
22
19
2.0 Fig.9
4.5
6.0
tW
STCP pulse width
HIGH or LOW
80
16
14
11
4
3
100
20
17
120
24
20
2.0 Fig.7
4.5
6.0
tW
SHCP pulse width
HIGH or LOW
80
16
14
14
5
4
100
20
17
120
24
20
2.0 Fig.7
4.5
6.0
tW
MR pulse width
LOW
80
16
14
22
8
6
100
20
17
120
24
20
2.0 Fig.8
4.5
6.0
tW
PL pulse width
LOW
80
16
14
22
8
6
100
20
17
120
24
20
2.0 Fig.9
4.5
6.0
trem
removal time
MR to SHCP
60
12
10
−3
−1
−1
75
15
13
90
18
15
2.0 Fig.10
4.5
6.0
tsu
set-up time
Dn to STCP
60
12
10
8
3
2
75
15
13
90
18
15
2.0 Fig.11
4.5
6.0
December 1990
7
NXP [ NXP ]
