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HD74LV244A

HD74LV244A 芯片功能简介

HD74LV244A
Octal Buffers / Drivers with 3-state Outputs
ADE-205-246 (Z)
1st Edition
March 1999
Description
The HD74LV244A has eight line drivers with three-state outputs in a 20-pin package. Four non-inverters
are included in one circuit. Each circuit can be independently controlled by the enable signal 1OE or 2OE,
which enables outputs when receiving a low-level signal. Low-voltage operation is suitable for battery-
powered products (e.g., notebook computers), and the low-power consumption extends the battery life.
Features
? V
CC
= 2.0 V to 5.5 V operation
? All inputs V
IH
(Max.) = 5.5 V (@V
CC
= 0 V to 5.5 V)
? All outputs V
O
(Max.) = 5.5 V (@V
CC
= 0 V)
? Typical V
OL
ground bounce < 0.8 V (@V
CC
= 3.3 V, Ta = 25 C)
? Typical V
OH
undershoot > 2.3 V (@V
CC
= 3.3 V, Ta = 25 C)
? Output current – 8 mA (@V
CC
= 3.0 V to 3.6 V), – 16 mA (@V
CC
= 4.5 V to 5.5 V)
Function Table
Inputs
OE A Output Y
LHH
LLL
HXZ
Note: H: High level
L: Low level
X: Immaterial
Z: High impedance


HD74LV244A 芯片封装管脚图

HD74LV244A芯片封装管脚图

HD74LV244A 芯片电路图

HD74LV244A芯片电路图