Philips Semiconductors
Product specification
8-bit serial-in, serial or parallel-out shift
register with output latches; 3-state
AC CHARACTERISTICS
Family 74HC
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF.
TEST CONDITIONS
SYMBOL
T
amb
= 25
°C
t
PHL
/t
PLH
propagation delay
SH_CP to Q7’
see Fig.7
2.0
4.5
6.0
propagation delay
ST_CP to Qn
see Fig.8
2.0
4.5
6.0
t
PHL
propagation delay
MR to Q7’
see Fig.10
2.0
4.5
6.0
t
PZH
/t
PZL
3-state output enable time
OE to Qn
see Fig.11
2.0
4.5
6.0
t
PHZ
/t
PLZ
3-state output disable time
OE to Qn
see Fig.11
2.0
4.5
6.0
t
W
shift clock pulse width
HIGH or LOW
see Fig.7
2.0
4.5
6.0
storage clock pulse width
HIGH or LOW
see Fig.8
2.0
4.5
6.0
master reset pulse width
LOW
see Fig.10
2.0
4.5
6.0
t
su
set-up time DS to SH_CP
see Fig.9
2.0
4.5
6.0
set-up time
SH_CP to ST_CP
see Fig.8
2.0
4.5
6.0
t
h
hold time DS to SH_CP
see Fig.9
2.0
4.5
6.0
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
75
15
13
75
15
13
75
15
13
50
10
9.0
75
15
13
+3
+3
+3
PARAMETER
WAVEFORMS
V
CC
(V)
74HC595; 74HCT595
MIN.
TYP.
MAX.
UNIT
52
19
15
55
20
16
47
17
14
47
17
14
41
15
12
17
6
5
11
4
3
17
6.0
5.0
11
4.0
3.0
22
8
7
−6
−2
−2
160
32
27
175
35
30
175
35
30
150
30
26
150
30
26
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
2003 Jun 25
13
PHILIPS [ NXP SEMICONDUCTORS ]
