HD74LV374A 查看數據表（PDF） - Hitachi -> Renesas Electronics

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HD74LV374A

Octal Edge-Triggered D-type Flip-Flops with 3-state Outputs

Hitachi -> Renesas Electronics 

HD74LV374A

Octal Edge-Triggered D-type Flip-Flops with 3-state Outputs

ADE-205-275 (Z)

1st Edition

April 1999

Description

The HD74LV374A has eight edge trigger D type flip flops with three state outputs in a 20 pin package.

Data at the D inputs meeting set up requirements, are transferred to the Q outputs on positive going

transitions of the clock input. When the clock input goes low, data at the D inputs will be retained at the

outputs until clock input 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 for the battery-powered

products (e.g., notebook computers), and the low-power consumption extends the battery life.

Features

• VCC = 2.0 V to 5.5 V operation

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

• All outputs VO (Max.) = 5.5 V (@VCC = 0 V)

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

• Typical VOH undershoot > 2.3 V (@VCC = 3.3 V, Ta = 25°C)

• Output current ±8 mA (@VCC = 3.0 V to 3.6 V), ±16 mA (@VCC = 4.5 V to 5.5 V)

Function Table

Inputs

OE

CLK

D

Output Q

H

X

X

Z

L

↑

L

L

L

↑

H

H

L

↓

X

Q0

Note: H: High level

L: Low level

X: Immaterial

Z: High impedance

Q0: Output level before the indicated steady state input conditions were established.

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