Philips Semiconductors
Product specification
8-bit serial-in/serial or parallel-out shift
register with output latches; 3-state
74HC/HCT595
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr = tf = 6 ns; CL = 50 pF.
T
amb (°C)
−40 to +85 −40 to +125 UNIT
TEST CONDITION
SYMBOL PARAMETER
+25
min typ max min max min max
VCC
(V)
WAVEFORMS
tPHL/ tPLH propagation delay
SHCP to Q7’
−
25
24
23
21
18
6
42
40
40
35
30
−
−
53
50
50
44
38
−
−
63
60
60
53
45
−
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
4.5 Fig.7
4.5 Fig.8
4.5 Fig.10
4.5 Fig.11
4.5 Fig.11
4.5 Fig.7
4.5 Fig.8
4.5 Fig.10
4.5 Fig.9
4.5 Fig.8
4.5 Fig.9
4.5 Fig.10
t
PHL/ tPLH propagation delay
STCP to Qn
−
−
−
tPHL
propagation delay
MR to Q7’
−
−
−
t
t
PZH/ tPZL 3-state output enable
−
−
−
time OE to Qn
PHZ/ tPLZ 3-state output disable
time OE to Qn
−
−
−
tW
shift clock pulse
16
20
20
25
20
20
3
24
24
30
24
24
3
width HIGH or LOW
tW
storage clock pulse width 16
HIGH or LOW
5
−
−
−
tW
master reset
20
16
16
3
8
−
−
−
pulse width LOW
tsu
tsu
th
set-up time DS to
SHSP
5
−
−
−
set-up time SHCP
to STCP
8
−
−
−
hold time DS to SHCP
−2
−7
52
−
−
−
trem
fmax
removal time MR
to SHCP
10
30
−
13
24
−
15
20
−
maximum clock
pulse frequency
SHCP or STCP
−
−
−
MHz 4.5 Figs 7 and 8
1998 Jun 04
11
NXP [ NXP ]
