Datasheet

1998 Jun 04 8
Philips Semiconductors Product specification
8-bit serial-in/serial or parallel-out shift
register with output latches; 3-state
74HC/HCT595
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see chapter
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
.
Output capability: parallel outputs, bus driver, serial output, standard I
CC
category: MSI.
AC CHARACTERISTICS FOR 74HC
GND = 0 V; t
r
=t
f
= 6 ns; C
L
=50pF.
SYMBOL PARAMETER
T
amb
(°C)
UNIT
TEST CONDITION
+25 40 to +85 40 to +125
V
CC
(V)
WAVEFORMS
min typ max min max min max
t
PHL
/t
PLH
propagation delay
SH
CP
to Q
7
52 160 200 240 ns 2.0 Fig.7
19 32 40 48 4.5
15 27 34 41 6.0
t
PHL
/t
PLH
propagation delay
ST
CP
to Q
n
55 175 220 265 ns 2.0 Fig.8
20 35 44 53 4.5
16 30 37 45 6.0
t
PHL
propagation delay
MR to Q
7
47 175 220 265 ns 2.0 Fig.10
17 35 44 53 4.5
14 30 37 45 6.0
t
PZH
/t
PZL
3-state output
enable time
OE to Q
n
47 150 190 225 ns 2.0 Fig.11
17 30 38 45 4.5
14 26 33 38 6.0
t
PHZ
/t
PLZ
3-state output
disable time
OE to Q
n
41 150 190 225 ns 2.0 Fig.11
15 30 38 45 4.5
12 26 33 38 6.0
t
W
shift clock pulse
width HIGH or
LOW
75 17 95 110 ns 2.0 Fig.7
15 6 19 22 4.5
13 5 16 19 6.0
t
W
storage clock
pulse width HIGH
or LOW
75 11 95 110 ns 2.0 Fig.8
15 4 19 22 4.5
13 3 16 19 6.0
t
W
master reset
pulse width LOW
75 17 95 110 ns 2.0 Fig.10
15 6.0 19 22 4.5
13 5.0 16 19 6.0
t
su
set-up time D
S
to
SH
CP
50 11 65 75 ns 2.0 Fig.9
10 4.0 13 15 4.5
9.0 3.0 11 13 6.0
t
su
set-up time SH
CP
to ST
CP
75 22 95 110 ns 2.0 Fig.8
15 8 19 22 4.5
13 7 16 19 6.0