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MC74AC257DTR2G Fiches technique(PDF) 1 Page - ON Semiconductor |
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MC74AC257DTR2G Fiches technique(HTML) 1 Page - ON Semiconductor |
1 / 9 page © Semiconductor Components Industries, LLC, 2015 March, 2015 − Rev. 8 1 Publication Order Number: MC74AC257/D MC74AC257, MC74ACT257 Quad 2-Input Multiplexer with 3-State Outputs The MC74AC257/74ACT257 is a quad 2−input multiplexer with 3−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. • Multiplexer Expansion by Tying Outputs Together • Noninverting 3−State Outputs • Outputs Source/Sink 24 mA • ′ACT257 Has TTL Compatible Inputs • These are Pb−Free Devices 15 16 14 13 12 11 10 2 1 345 67 VCC 9 8 OE I0c I1c Zc I0d I1d Zd SI0a I1a Za I0b I1b Zb GND Figure 1. Pinout: 16−Lead Packages Conductors (Top View) 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 xxx257G AWLYWW xxx 257 ALYW G G 1 16 (Note: Microdot may be in either location) |
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