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onsemi 74LCX540MTC — Signal Isolation

onsemi 74LCX540MTC Buffer Invert, 3-State, 20-TSSOP

MPN74LCX540MTC
End of Life

onsemi 74LCX Series Buffer, Inverting, 3-State, 8-bit, 24mA output, 2V-3.6V supply, -40°C to 85°C, 20-TSSOP, Tube.

$1.01Ref. price · indicative, final on quote
onsemi 74LCX540MTC datasheet (PDF)
Packaging20-TSSOP (0.173", 4.40mm Width)
RoHSROHS3 Compliant
Series74LCX
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

74LCX540MTC specifications
ParameterValue
Series74LCX
Logic typeBuffer, Inverting
Output type3-State
MountingSurface Mount
Supply voltage2V ~ 3.6V
Current - output high, low24mA, 24mA
Operating temperature-40°C ~ 85°C (TA)
PackageTube
Case20-TSSOP (0.173\", 4.40mm Width)
Number of elements1
Number of bits per element8

Product details

Active 8-bit inverting buffer with 3-state outputs

The onsemi 74LCX540MTC is an 8-bit inverting buffer with 3-state outputs, part of the 74LCX logic family. It operates from a 2V to 3.6V supply and can sink or source 24mA per output, making it suitable for driving bus lines or high-capacitance loads in mixed-voltage systems.

Housed in a 20-TSSOP package (4.40mm width, 0.173" pitch), the 74LCX540MTC is a surface-mount device. The fine-pitch TSSOP footprint demands careful PCB layout for signal integrity, especially when routing the 8-bit bus at higher toggle rates. Supplied in Tube packaging for through-hole assembly or small-batch rework.

Frequently asked questions

What is the logic function of 74LCX540MTC?

It is an 8-bit inverting buffer with 3-state outputs. The inverting function means the output is the logical complement of the input. The 3-state outputs allow the device to be placed in a high-impedance state for bus sharing.