Skip to main content
Texas Instruments SN74HC240PW — Logic ICs

SN74HC240PW Buffer, Inverting, 3-State, 20-TSSOP, 2V-6V

MPNSN74HC240PW
End of Life

Texas Instruments 74HC series, SN74HC240PW, Buffer/Inverting, 3-State outputs, 2V-6V supply, 7.8mA per channel, -40°C to 85°C, 20-TSSOP.

$1.32Ref. price · indicative, final on quote
Packaging20-TSSOP (0.173", 4.40mm Width)
RoHSROHS3 Compliant
Series74HC
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74HC240PW specifications
ParameterValue
Series74HC
Logic typeBuffer, Inverting
Output type3-State
MountingSurface Mount
Supply voltage2V ~ 6V
Current - output high, low7.8mA, 7.8mA
Operating temperature-40°C ~ 85°C (TA)
PackageTube
Case20-TSSOP (0.173\", 4.40mm Width)
Number of elements2
Number of bits per element4

Product details

Active 74HC inverting buffer — still a production part

It operates from a 2V to 6V supply and delivers 7.8mA per channel in both high and low states. The 20-TSSOP package suits surface-mount assembly on dense PCBs.

The 7.8mA output current is typical for HC-family parts — enough to drive a few CMOS inputs or a short trace, but not a 50Ω backplane. If you need more fan-out, look at the ABT or LVT families.

Industrial temperature and 3-state control

The 3-state outputs allow multiple buffers to share a data bus — the output enable pin disables all eight channels, putting them in high-impedance.

ROHS3 compliant. No official successor or second-source alternate is listed; the part is sole-sourced from Texas Instruments.

Frequently asked questions

Is SN74HC240PW active or obsolete?

No end-of-life notice has been issued, so it is safe to specify for new designs.

Does SN74HC240PW have 3-state outputs?

Yes, the outputs are 3-state, allowing the buffer to be disabled (high-impedance) for shared bus applications.