MC74ACT253

MC74AC253, MC74ACT253 Dual 4-Input Multiplexer with 3-State Outputs The MC74AC253/74ACT253 is a dual 4−input multiplexer with 3−state outputs. It can select two bits of data from four sources using common select inputs. 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. Multifunctional Capability Noninverting 3−State Outputs Outputs Source/Sink 24 mA ′ACT253 Has TTL Compatible Inputs These are Pb−Free Devices VCC OEb S0 I3b I2b I1b I0b Zb 16 15 14 13 12 11 10 9 12345678 OEa S1 I3a I2a I1a I0a Za GND Figure 1. Pinout: 16−Lead Packages Conductors (Top View) PIN NAME PIN I0a−I3a I0b−I3b S0, S1 OEa OEb Za, Zb FUNCTION Side A Data Inputs Side B Data Inputs Common Select Inputs Side A Output Enable Input Side B Output Enable Input 3−State Outputs www.onsemi.com 16 1 16 1 MARKING DIAGRAMS 16 SOIC−16 D SUF...