HD74HC373 Datasheet, PDF (1/11 Pages) Hitachi Semiconductor – Octal D-type Transparent Latches (with 3-state outputs),Octal D-type Transparent Latches (with inverted 3-state outputs)

HD74HC373/HD74HC533
Octal D-type Transparent Latches (with 3-state outputs)
Octal D-type Transparent Latches (with inverted 3-state outputs)
Description
When the latch enable input is high, the Q outputs of HD74HC373 will follow the D inputs and the Q
outputs of HD74HC533 will follow the inversion of the D inputs. When the latch enable goes low, data at
the D inputs will be retained at the outputs until latch enable returns high again. When a high logic level is
applied to the output control input, all outputs go to a high impedance state, regardless of what signals are
present at the other inputs and the state of the storage elements.
Features
• High Speed Operation: t_pd (D to Q) = 16 ns typ (C_L = 50 pF)
• High Output Current: Fanout of 15 LSTTL Loads
• Wide Operating Voltage: V_CC = 2 to 6 V
• Low Input Current: 1 µA max
• Low Quiescent Supply Current: I_CC (static) = 4 µA max (Ta = 25°C)
Function Table
Output Control Enable
G
D
L
H
H
L
H
L
L
L
X
H
X
X
X : irrelevant
Z : Off (high-impedance) state of a 3-state output.
HD74HC373
Q
H
L
No change
Z
HD74HC533
Q
L
H
No change
Z