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54AC257

Part Number	54AC257
Manufacturer	National Semiconductor
Description	Quad 2-Input Multiplexer
Published	Feb 15, 2007
Detailed Description	www.DataSheet4U.com 54AC257 • 54ACT257 Quad 2-Input Multiplexer with TRI-STATE Outputs July 1998 54AC257 • 54ACT257 Q...
Datasheet	54AC257 PDF File

Overview

www.
DataSheet4U.
com 54AC257 • 54ACT257 Quad 2-Input Multiplexer with TRI-STATE Outputs July 1998 54AC257 • 54ACT257 Quad 2-Input Multiplexer with TRI-STATE ® Outputs General Description The ’AC/’ACT257 is a quad 2-input multiplexer with TRI-STATE outputs.
Four bits of data from two sources can be selected using a Common Data Select input.
The four outputs present the selected data in true (noninverted) form.
The outputs may be switched to a high impedance state by placing a logic HIGH on the common Output Enable (OE) input, allowing the outputs to interface directly with bus-oriented systems.
Features n n n n n n ICC and IOZ reduced by 50% Multiplexer expansion by tying outputs together Noninverting TRI-STATE outputs Outputs source/sink 24 mA ’ACT257 has TTL-compatible inputs Standard Military Drawing (SMD) — ’AC257: 5962-88703 — ’ACT257: 5962-89689 Logic Symbols IEEE/IEC DS100286-1 DS100286-2 Pin Names S OE I0a–I0d I1a–I1d Za–Zd Description Common Data Select Input TRI-STATE ...

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