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HD74ALVCH16244 Datasheet

  • HD74ALVCH16244

  • 16-bit Buffers / Drivers with 3-state Outputs

  • 9頁

  • HITACHI

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HD74ALVCH16244
16-bit Buffers / Drivers with 3-state Outputs
ADE-205-133C (Z)
4th. Edition
December 1999
Description
The HD74ALVCH16244 is designed specifically to improve both the performance and density of three
state memory address drivers, clock drivers, and bus oriented receivers and transmitters. The device can be
used as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer. It provides true outputs and symmetrical
OE
(active-low output-enable) inputs. Active bus hold circuitry is provided to hold unused or floating data
inputs at a valid logic level.
Features
鈥?/div>
V
CC
= 2.3 V to 3.6 V
鈥?/div>
Typical V
OL
ground bounce < 0.8 V (@V
CC
= 3.3 V, Ta = 25擄C)
鈥?/div>
Typical V
OH
undershoot > 2.0 V (@V
CC
= 3.3 V, Ta = 25擄C)
鈥?/div>
Bus hold on data inputs eliminates the need for external pullup / pulldown resistors
Function Table
Inputs
OE
L
L
H
H : High level
L : Low level
X : Immaterial
Z : High impedance
A
H
L
X
H
L
Z
Output Y

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