HD74HC595
Test Circuit
V
CC
V
CC
Output
See Function Table
Input
Pulse Generator
Z
out
= 50
Ω
Input
Pulse Generator
Z
out
= 50
Ω
G
Q
A
to Q
H
or
RCK
Q
H
'
SER
SCK
1 k
Ω
C
L
=
50 pF
S1
OPEN
GND
V
CC
SCLR
TEST
t
PLH
/ t
PHL
t
ZH
/ t
HZ
t
ZL
/ t
LZ
S1
OPEN
GND
V
CC
Note : 1. C
L
includes probe and jig capacitance.
Waveforms
•
Waveform – 1 (SCK to Q
H
')
tr
Input SCK
10 %
90 %
50 % 50 %
tf
V
CC
50 %
10 %
tw(H)
t
PLH
90 %
tw(L)
t
PHL
90 %
50 %
10 %
0V
V
OH
V
OL
Output Q
H
'
50 %
10 %
t
TLH
t
THL
Note : 1. Input waveform : PRR
≤
1 MHz, duty cycle 50%, t
r
≤
6 ns, t
f
≤
6 ns
•
Waveform – 2 (RCK to Q)
t
r
Input RCK
10 %
90 %
50 %
V
CC
0V
t
PLH
/t
PHL
Output
Q
A
to Q
H
90 %
10 %
90 %
50 %
10 %
V
OH
V
OL
t
TLH
/t
THL
Note : 1. Input waveform : PRR
≤
1 MHz, duty cycle 50%, t
r
≤
6 ns, t
f
≤
6 ns
Rev.2.00 Mar 30, 2006 page 7 of 10
RENESAS [ RENESAS TECHNOLOGY CORP ]
