GENERAL DESCRIPTION
The outputs may be individually switched to a high impedance state with a HIGH on the respective Output Enable (OE) inputs, allowing the outputs to interface directly with bus oriented systems. n n n n n Multifunction capability Noninverting TRI-STATE outputs Outputs source/sink 24 mA ’ACT253 has TTL-compatible inputs Standard Military Drawing (SMD) — ’AC253: 5962-87693 — ’ACT253: 5962-87761 FEATURES
n ICC and IOZ reduced by 50% Logic Diagrams IEEE/IEC DS100285-1 DS100285-2 Pin Names I0a–I3a I0b–I3b S0, S1 OEa OEb Za, Zb DESCRIPTION
Side A Data Inputs Side B Data Inputs Common Select Inputs Side A Output Enable Input Side B Output Enable Input TRI-STATE Outputs TRI-STATE ® is a registered trademark of National Semiconductor Corporation. FACT ® is a registered trademark of Fairchild Semiconductor Corporation. © 1998 National Semiconductor Corporation DS100285 Connection Diagrams Pin Assignment for DIP and Flatpak Pin Assignment for LCC DS100285-3 DS100285-4 Functional DESCRIPTION
The ’AC/’ACT253 contains two identical 4-input multiplexers with TRI-STATE outputs.
National Semiconductor
