MC74LCX540: Low Voltage CMOS Octal Buffer Flow Through Pinout

The MC74LCX540 is a high performance, inverting octal buffer operating from a 2.3 to 3.6V supply. This device is similar in function to the MC74LCX240, while providing flow through architecture. High impedance TTL compatible inputs significantly reduce current loading to input drivers while TTL compatible outputs offer improved switching noise performance. A VI specification of 5.5V allows MC74LCX540 inputs to be safely driven from 5V devices. The MC74LCX540 is suitable for memory address driving and all TTL level bus oriented transceiver applications.Current drive capability is 24mA at the outputs. The Output Enable(OE1bar, OE2bar) inputs, when HIGH, disables the outputs by placing them in a HIGH Z condition.

Features
  • Designed for 2.3 to 3.6V VCC Operation
  • 5V Tolerant - Interface Capability With 5V TTL Logic
  • Supports Live Insertion and Withdrawal
  • IOFF Specification Guarantees High Impedance When VCC = 0V
  • LVTTL Compatible
  • LVCMOS Compatible
  • 24mA Balanced Output Sink and Source Capability
  • Near Zero Static Supply Current in All Three Logic States (10mA) Substantially Reduces System Power Requirements
  • Latchup Performance Exceeds 500mA
  • ESD Performance: Human Body Model >2000V; Machine Model >200V
  • Pb-Free Packages are Available*
Simulation Models (3)
Document TitleDocument ID/SizeRevisionRevision Date
mc74lcx540dt_c300.ibsMC74LCX540DT_C300.IBS (64.0kB)0
mc74lcx540dw_c300.ibsMC74LCX540DW_C300.IBS (64.0kB)0
mc74lcx540m_c300.ibsMC74LCX540M_C300.IBS (64.0kB)0
Package Drawings (2)
Document TitleDocument ID/SizeRevision
SOIC-20 WB751D-05 (36.3kB)H
TSSOP-20 WB948E-02 (39.7kB)D
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
Low-Voltage CMOS Octal Buffer Flow Through PinoutMC74LCX540/D (126.0kB)8
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
MC74LCX540DTGActivePb-free Halide freeTSSOP-20948E-021Tube75$0.296
MC74LCX540DTR2GActivePb-free Halide freeTSSOP-20948E-021Tape and Reel2500$0.296
MC74LCX540DWR2GActivePb-free Halide freeSOIC-20W751D-053Tape and Reel1000$0.32
Specifications
ProductChannelsOutputVCC Min (V)VCC Max (V)tpd Max (ns)IO Max (mA)
MC74LCX540DTG83-State23.66.524
MC74LCX540DTR2G83-State23.66.524
MC74LCX540DWR2G83-State23.66.524
Low-Voltage CMOS Octal Buffer Flow Through Pinout (126.0kB) MC74LCX540
mc74lcx540dt_c300.ibs MC74LCX540
mc74lcx540dw_c300.ibs MC74LCX540
mc74lcx540m_c300.ibs MC74LCX540
TSSOP-20 WB NLSX3018
SOIC-20 WB NLSX3018
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