Octal Buffer/Line Driver
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54AC244 • 54ACT244 Octal Buffer/Line Driver with TRI-STATE Outputs
August 1998
54AC244 • 54ACT244...
Description
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54AC244 54ACT244 Octal Buffer/Line Driver with TRI-STATE Outputs
August 1998
54AC244 54ACT244 Octal Buffer/Line Driver with TRI-STATE ® Outputs
General Description
The ’AC/’ACT244 is an octal buffer and line driver designed to be employed as a memory address driver, clock driver and bus-oriented transmitter/receiver which provides improved PC board density.
Features
n ICC and IOZ reduced by 50% n TRI-STATE outputs drive bus lines or buffer memory address registers n Outputs source/sink 24 mA n ’ACT244 has TTL-compatible inputs n Standard Microcircuit Drawing (SMD) — ’AC244: 5962-87552 — ’ACT244: 5962-87760
Logic Symbol
IEEE/IEC
Pin Names OE1, OE2 I0–I7 O0–O7 Inputs Outputs
Description TRI-STATE Output Enable Inputs
DS100282-1
TRI-STATE ® is a registered trademark of National Semiconductor Corporation. FACT ® is a registered trademark of Fairchild Semiconductor Corporation.
© 1998 National Semiconductor Corporation
DS100282
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Connection Diagrams
Pin Assignment for DIP and Flatpak
Truth Tables
Inputs OE1 L L H In L H X Outputs (Pins 12, 14, 16, 18) L H Z
H = HIGH Voltage Level L = LOW Voltage Level
Inputs OE2 L L H
DS100282-2
Outputs (Pins 3, 5, 7, 9) L H Z L
In H X
X = Immaterial Z = High Impedance
Pin Assignment for LCC
DS100282-3
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2
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availa...
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