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NXP Semiconductors 74HC240PW,118 — Discrete Semiconductors

74HC240PW,118 Buffer/Line Driver, 3-State, 20-TSSOP, 2V–6V

MPN74HC240PW,118
End of Life

Nexperia 74HC240PW,118, Series 74HC, Logic Type Buffer, Inverting, Output Type 3-State, 2V ~ 6V Supply, -40°C ~ 125°C, 20-TSSOP, Surface Mount.

$0.16Ref. price · indicative, final on quote
NXP Semiconductors 74HC240PW,118 datasheet (PDF)
Packaging20-TSSOP (0.173", 4.40mm Width)
RoHSROHS3 Compliant
Series74HC
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

74HC240PW,118 specifications
ParameterValue
Series74HC
Logic typeBuffer, Inverting
Output type3-State
MountingSurface Mount
Voltage2V ~ 6V
Current - output high, low7.8mA, 7.8mA
Operating temperature-40°C ~ 125°C (TA)
PackageBulk
Case20-TSSOP (0.173\", 4.40mm Width)
Number of elements2
Number of bits per element4

Product details

Octal inverting buffer for bus-oriented logic

The Nexperia 74HC240PW,118 is an octal inverting buffer/line driver with 3-state outputs, packaged in a 20-TSSOP footprint. It accepts a supply range of 2V to 6V, making it usable in both 3.3V and 5V logic domains. Each of the two 4-bit elements provides inverting drive with 7.8 mA source and sink capability, enough to drive standard HC inputs or short PCB traces. The 3-state outputs let multiple buffers share a common bus line without contention — a typical use case in address/data bus isolation or memory-mapped I/O expansion.

The 2V to 6V supply range covers both 3.3V and 5V logic domains. At 5V the HC family's noise margins are generous; at 3.3V the output drive (7.8 mA) stays within the same rating.

For BOM freeze or production replenishment, this part is a safe selection.

Frequently asked questions

What is the difference between 74HC240PW and 74HC240N?

The 74HC240PW uses a 20-TSSOP surface-mount package, while the 74HC240N uses a 20-pin DIP through-hole package. The logic function, supply range, and temperature grade are identical. The PW variant is suited for modern SMT assembly; the N variant is for through-hole boards or prototyping.

What is the function of 74HC240PW?

It is an octal inverting buffer/line driver with 3-state outputs. It drives bus lines or isolates logic signals, and the 3-state feature allows multiple outputs to share a common bus without contention.

Can 74HC240PW be used as a replacement for 74HC240?

Yes, the 74HC240PW is the surface-mount variant of the 74HC240 logic function. The electrical specifications — supply range, drive current, temperature grade — are the same. The only difference is the package: 20-TSSOP vs. the original DIP or SOIC options.