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54ACT245L View Datasheet(PDF) - National ->Texas Instruments

Part Name54ACT245L National-Semiconductor
National ->Texas Instruments National-Semiconductor
DescriptionOctal Bidirectional Transceiver with TRI-STATE® Inputs/Outputs
54ACT245L Datasheet PDF : 9 Pages
1 2 3 4 5 6 7 8 9
August 1998
54AC245 54ACT245
Octal Bidirectional Transceiver with TRI-STATE®
Inputs/Outputs
General Description
The ’AC/’ACT245 contains eight non-inverting bidirectional
buffers with TRI-STATE outputs and is intended for
bus-oriented applications. Current sinking capability is
24 mA at both the A and B ports. The Transmit/Receive (T/R)
input determines the direction of data flow through the bidi-
rectional transceiver. Transmit (active-HIGH) enables data
from A ports to B ports; Receive (active-LOW) enables data
from B ports to A ports. The Output Enable input, when
HIGH, disables both A and B ports by placing them in a HIGH
Z condition.
Features
n ICC and IOZ reduced by 50%
n Noninverting buffers
n Bidirectional data path
n A and B outputs source/sink 24 mA
n ’ACT245 has TTL-compatible inputs
n Standard Microcircuit Drawing (SMD)
— ’AC245: 5962-87758
— ’ACT245: 5962-87663
Logic Symbols
IEEE/IEC
DS100283-1
Pin
Names
OE
T/R
A0– A7
B0– B7
Description
Output Enable Input
Transmit/Receive Input
Side A TRI-STATE Inputs or TRI-STATE Outputs
Side B TRI-STATE Inputs or TRI-STATE Outputs
DS100283-2
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
FACT® is a registered trademark of Fairchild Semiconductor Corporation.
© 1998 National Semiconductor Corporation DS100283
www.national.com
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General Description
The ’AC/’ACT245 contains eight non-inverting bidirectional buffers with TRI-STATE outputs and is intended for bus-oriented applications. Current sinking capability is 24 mA at both the A and B ports. The Transmit/Receive (T/R) input determines the direction of data flow through the bidi rectional transceiver. Transmit (active-HIGH) enables data from A ports to B ports; Receive (active-LOW) enables data from B ports to A ports. The Output Enable input, when HIGH, disables both A and B ports by placing them in a HIGH Z condition.

Features
■ ICC and IOZ reduced by 50%
■ Noninverting buffers
■ Bidirectional data path
■ A and B outputs source/sink 24 mA
■ ’ACT245 has TTL-compatible inputs
■ Standard Microcircuit Drawing (SMD)
   — ’AC245: 5962-87758
   — ’ACT245: 5962-87663

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