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Texas Instruments SN74LVTH540PW — Analog & Data Acquisition

SN74LVTH540PW Buffer Inverting 3-State, 20-TSSOP, 2.7V-3.6V

MPNSN74LVTH540PW
End of Life

Texas Instruments SN74LVTH540PW, 74LVTH series, 8-bit Inverting Buffer with 3-State Outputs, 2.7V to 3.6V supply, 32mA source / 64mA sink, 20-TSSOP, -40°C to 85°C.

$2.21Ref. price · indicative, final on quote
Texas Instruments SN74LVTH540PW datasheet (PDF)
Packaging20-TSSOP (0.173", 4.40mm Width)
RoHSROHS3 Compliant
Series74LVTH
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74LVTH540PW specifications
ParameterValue
Series74LVTH
Logic typeBuffer, Inverting
Output type3-State
MountingSurface Mount
Supply voltage2.7V ~ 3.6V
Current - output high, low32mA, 64mA
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

Eight-bit inverting bus buffer with 3-state outputs

The SN74LVTH540PW is an 8-bit inverting buffer with 3-state outputs from the 74LVTH series. Each channel sinks 64mA and sources 32mA.

Output drive and bus loading

The 32mA source and 64mA sink per output are the headline numbers for bus design. On a 3.3V backplane with 50pF per load and a 10MHz clock, the 64mA sink handles the capacitive discharge without ringing—but check the simultaneous switching output limit in the datasheet if you're toggling all eight bits at once. For a memory-address bus driving four DRAM loads, this buffer clears the fan-out without needing a secondary buffer stage.

There is no last-time-buy notice, no NRND flag, and no successor part announced.

Frequently asked questions

Is SN74LVTH540PW compatible with 3.3V logic?

Yes, the SN74LVTH540PW operates from 2.7V to 3.6V supply, making it native 3.3V logic. Its LVTTL-compatible input thresholds (VIL 0.8V max, VIH 2.0V min) interface directly with 3.3V FPGAs, MCUs, and other 74LVTH or LVC devices.

What is the difference between SN74LVTH540PW and SN74LVTH541PW?

The SN74LVTH540PW is an inverting buffer (output = inverted input), while the SN74LVTH541PW is a non-inverting buffer. Both are 8-bit, 3-state, same supply range and package. Choose the 540 for active-low bus signals or when you need an inversion in the data path; choose the 541 for a straight-through non-inverted path.

What is the lead time for SN74LVTH540PW?

Lead time is confirmed at quote time through independent distribution. Submit an RFQ to get a current lead time estimate based on available inventory and supplier channels.