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MC74ACT257N Scheda tecnica(PDF) 1 Page - ON Semiconductor |
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MC74ACT257N Scheda tecnica(HTML) 1 Page - ON Semiconductor |
1 / 12 page © Semiconductor Components Industries, LLC, 2006 March, 2006 − Rev. 7 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 w These devices are available in Pb−free package(s). Specifications herein apply to both standard and Pb−free devices. Please see our website at www.onsemi.com for specific Pb−free orderable part numbers, or contact your local ON Semiconductor sales office or representative. 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) http://onsemi.com DIP−16 N SUFFIX CASE 648 1 16 SO−16 D SUFFIX CASE 751B 1 16 Device Package Shipping ORDERING INFORMATION MC74AC257N PDIP−16 25 Units/Rail MC74AC257D SOIC−16 48 Units/Rail MC74AC257DR2 2500 Tape & Reel TSSOP−16 DT SUFFIX CASE 948F MC74AC257DT TSSOP−16 96 Units/Rail MC74AC257DTR2 TSSOP−16 SOIC−16 2500 Tape & Reel MC74ACT257N PDIP−16 25 Units/Rail MC74ACT257D SOIC−16 48 Units/Rail MC74ACT257DR2 2500 Tape & Reel MC74ACT257DT TSSOP−16 96 Units/Rail MC74ACT257DTR2 TSSOP−16 SOIC−16 2500 Tape & Reel 1 16 See general marking information in the device marking section on page 8 of this data sheet. DEVICE MARKING INFORMATION 1 16 EIAJ−16 M SUFFIX CASE 966 MC74AC257MEL EIAJ−16 2000 Tape & Reel MC74ACT257M EIAJ−16 MC74ACT257MEL EIAJ−16 2000 Tape & Reel 50 Units/Rail |
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