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1 / 9 page © Semiconductor Components Industries, LLC, 2015 March, 2015 − Rev. 7 1 Publication Order Number: MC74AC253/D 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 15 16 14 13 12 11 10 2 1 3 456 7 VCC 9 8 OEb S0 I3b I2b I1b I0b Zb OEa S1 I3a I2a I1a I0a Za GND Figure 1. Pinout: 16−Lead Packages Conductors (Top View) PIN NAME PIN FUNCTION I0a−I3a Side A Data Inputs I0b−I3b Side B Data Inputs S0, S1 Common Select Inputs OEa Side A Output Enable Input OEb Side B Output Enable Input Za, Zb 3−State Outputs www.onsemi.com See detailed ordering and shipping information in the package dimensions section on page 7 of this data sheet. ORDERING INFORMATION SOIC−16 D SUFFIX CASE 751B TSSOP−16 DT SUFFIX CASE 948F 1 16 1 16 MARKING DIAGRAMS xxx = AC or ACT A = Assembly Location WL or L = Wafer Lot Y = Year WW or W = Work Week G or G = Pb−Free Package 1 16 xxx253G AWLYWW xxx 253 ALYW G G 1 16 (Note: Microdot may be in either location) |
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