HD74HCT373 查看數據表（PDF） - Hitachi -> Renesas Electronics

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HD74HCT373

Octal D-type Transparent Latches (with inverted 3-state outputs)

Hitachi -> Renesas Electronics 

HD74HCT373/HD74HCT533

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 HD74HCT373 will follow the D inputs and the Q

outputs of HD74HCT533 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

present at the other inputs and the state of the storage elements.

Features

• LSTTL Output Logic Level Compatibility as well as CMOS Output Compatibility

• High Speed Operation: tpd (Data to Q) = 14 ns typ (CL = 50 pF)

• High Output Current: Fanout of 15 LSTTL Loads

• Wide Operating Voltage: VCC = 4.5 to 5.5 V

• Low Input Current: 1 µA max

• Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)

Function Table

Enable

Output Control 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.

HD74HCT373

Q

H

L

No change

Z

HD74HCT533

Q

L

H

No change

Z

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