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Texas Instruments SN74LVC540AQPWRQ1 — Logic ICs

SN74LVC540AQPWRQ1 Buffer Inverting 3-State, 24mA, AEC-Q100

MPNSN74LVC540AQPWRQ1
End of Life

Texas Instruments SN74LVC540AQPWRQ1, Automotive AEC-Q100 74LVC series, Buffer Inverting 3-State, 2V to 3.6V supply, 24mA output, -40°C to 125°C, 20-TSSOP surface mount.

$0.95Ref. price · indicative, final on quote
Texas Instruments SN74LVC540AQPWRQ1 datasheet (PDF)
Packaging20-TSSOP (0.173", 4.40mm Width)
RoHSROHS3 Compliant
SeriesAutomotive, AEC-Q100, 74LVC
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74LVC540AQPWRQ1 specifications
ParameterValue
SeriesAutomotive, AEC-Q100, 74LVC
Logic typeBuffer, Inverting
Output type3-State
MountingSurface Mount
Supply voltage2V ~ 3.6V
Current - output high, low24mA, 24mA
Operating temperature-40°C ~ 125°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case20-TSSOP (0.173\", 4.40mm Width)
Number of elements1
Number of bits per element8

Product details

Automotive-grade inverting buffer with 3-state outputs

The 2V to 3.6V supply range covers both nominal 3.3V and 2.5V rails without a separate level translator. If your design runs a 3.3V rail that dips to 2.7V during cold-crank, this part stays within spec. That matters for engine-bay or transmission-control modules where ambient can hit 105°C and junction temperature climbs higher.

For a production BOM line, this part is a low-risk selection — no forced redesign horizon.

Housed in a 20-TSSOP package (4.40mm width), this is a surface-mount device. The TSSOP footprint is common across many 8-bit bus-interface parts, so a board layout for a standard 20-pin TSSOP buffer will accept this device without a respin.

Frequently asked questions

Is SN74LVC540AQPWRQ1 obsolete or end-of-life?

No. The Texas Instruments product record lists this part as Active. It remains a current-production device suitable for new designs.

Is SN74LVC540AQPWRQ1 compatible with 3.3V logic?

Yes. With a supply range that includes 3.3V, this part operates directly on a 3.3V rail. The 24mA output drive at both high and low levels is compatible with standard 3.3V CMOS and LVTTL inputs.