HD74LS373 Datasheet, PDF (2/8 Pages) Hitachi Semiconductor – Octal D-type Transparent Latches(with three-state outputs)

HD74LS373
Function Table
Inputs
Output control
Enable G
D
L
H
H
L
H
L
L
L
X
H
X
X
Notes: H; high level, L; low level, X; irrelevant
Q₀; level of Q before the indicated steady-state input conditions were established
Z; off (high-impedance) state of a three-state output
Block Diagram
1Q
2Q
3Q
4Q
5Q
6Q
7Q
Output
Q
H
L
Q₀
Z
8Q
Q
Q
Q
Q
Q
Q
Q
Q
DG
DG
DG
DG
DG
DG
DG
DG
Output 1D
2D
3D
4D
5D
6D
7D
8D Enable
Control
G
Absolute Maximum Ratings
Item
Symbol
Ratings
Supply voltage
V_CC
7
Input voltage
V_IN
7
Power dissipation
P_T
400
Storage temperature
Tstg
–65 to +150
Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.
Recommended Operating Conditions
Item
Symbol
Min
Typ
Max
Supply voltage
V_CC
4.75
5.00
5.25
Output voltage
V_OH
—
—
5.5
Output current
I_OH
—
I_OL
—
—
–2.6
—
24
Operating temperature
Topr
–20
25
75
“H” Level
15
—
—
Enable pulse width
“L” Level
t_w
15
—
—
Data setup time
Data hold time
t_su
5↓
—
—
t_h
20↓
—
—
Unit
V
V
mW
°C
Unit
V
V
mA
mA
°C
ns
ns
ns
ns
Rev.2.00, Feb.18.2005, page 2 of 7