HD74LS374
Waveforms 1
t
TLH
90%
1.3 V
10%
t
su
t
TLH
Clock
90% 90%
1.3 V 1.3 V
10%
10%
t
w
t
PLH
Q
S
1
, S
2
Closed
1.3 V
1.3 V
V
OL
t
w
t
PHL
V
OH
t
h
t
THL
3V
1.3 V
0V
90%
1.3 V
10%
t
su
t
h
t
THL
3V
1.3 V
0V
Data
Notes:
1. Input pulse; t
TLH
≤
15 ns, t
THL
≤
6 ns
Clock input; PRR = 1 MHz, duty cycle 50%
Data input pulse; PRR = 500 kHz, duty cycle 50%
2.
ƒ
max
: t
TLH
≤
2.5 ns, t
THL
≤
2.5 ns
Waveforms 2
t
THL
Output
Control
90%
1.3V
t
TLH
90%
1.3V
3V
0V
t
LZ
10%
t
ZL
4.5V
S
1
closed,
S
2
open
10%
S
1
, S
2
closed
Waveform A
1.3V
t
HZ
0.5V
1.5V
V
OL
t
ZH
Waveform B
S
1
open,
S
2
closed
V
OH
1.3V
0V
1.5V
0.5V
S
1
, S
2
closed
Notes:
1. Input pulse; t
TLH
≤
15 ns, t
THL
≤
6 ns, PRR = 1 MHz, duty cycle 50%
2. Waveform A if for an output with internal conditions such that the output is low except when
disabled by the output control. Waveform B is for an output with internal conditions such that
the output is high except when disabled by the output control.
Rev.2.00, Feb.18.2005, page 5 of 7
RENESAS [ RENESAS TECHNOLOGY CORP ]
