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Texas Instruments SN74LV540ANSR — Logic ICs
Texas Instruments

SN74LV540ANSR Buffer, Inverting 3-State 20-SOIC

MPNSN74LV540ANSR
End of Life

Texas Instruments 74LV series, SN74LV540ANSR, Buffer, Inverting, 3-State output, 2V to 5.5V supply, 16mA output drive, -40°C to 125°C, 20-SOIC package.

$1.08Ref. price · indicative, final on quote
SN74LV540ANSR datasheet
Packaging20-SOIC (0.209", 5.30mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

SN74LV540ANSR Technical Specifications
ParameterValue
Series74LV
Logic typeBuffer, Inverting
Output type3-State
Mounting typeSurface Mount
Voltage2V ~ 5.5V
Current - output high, low16mA, 16mA
Operating temperature-40°C ~ 125°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case20-SOIC (0.209\", 5.30mm Width)
Number of elements1
Number of bits per element8

Product details

Supply range — bridging 3.3V and 5V without a level shifter

The 2V to 5.5V supply range means this buffer can operate on a 3.3V rail and still accept or drive 5V-tolerant logic levels, or run straight from an unregulated 5V supply. That flexibility saves a dedicated level-translator IC when mixing voltage domains on a mixed-signal board or a legacy bus interface.

Output drive — 16 mA sink and source

Each output is rated for 16 mA source and 16 mA sink at the rated supply voltage. This is enough to drive a handful of CMOS logic inputs, an LED indicator, or a short PCB trace without an external buffer. Budget the total package current — 8 outputs × 16 mA = 128 mA theoretical max — against the package's thermal limits in the 20-SOIC at 125°C ambient.

Package and assembly — 20-SOIC on Tape & Reel

The 20-SOIC footprint is a standard JEDEC outline — no exotic land pattern required.

Frequently asked questions

Is SN74LV540ANSR a direct replacement for SN74LV540ADWR?

The SN74LV540ADWR is the same 74LV inverting buffer in a 20-SOIC package, but with a different tape-and-reel suffix (DWR vs NSR). The two parts are functionally identical — same logic, same supply range, same temperature grade, same package outline. The difference is the reel quantity and the reel orientation (embossed vs standard). For a BOM line, they are drop-in replacements as long as the pick-and-place feeder setup is verified for the reel format.