MC74AC257: Quad 2-Input Multiplexer 3-State Output

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.

Features
  • Multiplexer Expansion by Tying Outputs Together
  • Noninverting 3-State Outputs
  • Outputs Source/Sink 24 mA
  • ACT257 Has TTL Compatible Inputs
  • 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.
Simulation Models (1)
Document TitleDocument ID/SizeRevisionRevision Date
IBIS Model for MC74AC257DMC74AC257D.IBS (9.0kB)0
Package Drawings (1)
Document TitleDocument ID/SizeRevision
SOIC 16 LEAD751B-05 (38.2kB)K
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
Quad 2 Input Multiplexer with 3 State OutputsMC74AC257/D (95kB)8
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
MC74AC257DR2GActivePb-free Halide freeSOIC-16751B-051Tape and Reel2500$0.2667
Specifications
ProductChannelsVCC Min (V)VCC Max (V)tpd Max (ns)IO Max (mA)
MC74AC257DR2G4267.524
Quad 2 Input Multiplexer with 3 State Outputs (95kB) MC74ACT257
IBIS Model for MC74AC257D MC74AC257
SOIC 16 LEAD MC14504B