HD74LVC573A Просмотр технического описания (PDF) - Hitachi -> Renesas Electronics

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HD74LVC573A

Octal D-type Transparent Latches with 3-state Outputs

Hitachi -> Renesas Electronics 

HD74LVC573A

Octal D-type Transparent Latches with 3-state Outputs

ADE-205-116B(Z)

3rd Edition

December 1996

Description

The HD74LVC573A has eight D type latches with three state outputs in a 20 pin package. When the latch

enable input is high, the Q outputs will follow 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. Low voltage and high speed operation is

suitable at the battery drive product (note type personal computer) and low power consumption extends the

life of a battery for long time operation.

Features

• VCC = 2.0 V to 5.5 V

• All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V)

• All outputs VOUT (Max.) = 5.5 V (@VCC = 0 V or output off state)

• Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C)

• Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C)

• High output current ±24 mA (@VCC = 3.0 V to 5.5 V)

Function Table

Inputs

OC

LE

D

Output Q

L

H

H

H

L

H

L

L

L

L

X

Q0

H

X

X

Z

H : High level

L : Low level

X : Immaterial

Z : High impedance

Q0 : Level of Q before the indicated steady input conditions were established.

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