The Texas Instruments SN74ABT240APWR is a dual 4-bit inverting buffer with 3-state outputs, part of the 74ABT BiCMOS logic family. It operates from a 4.5 V to 5.5 V supply. Output drive is rated at 32 mA sourcing and 64 mA sinking per channel, enough to drive heavily loaded parallel buses or long backplane traces without external line drivers.
SN74ABT240APWR Buffer Inverting 3-State, 4.5V-5.5V, 20-TSSOP
MPNSN74ABT240APWR
End of Life
Texas Instruments 74ABT series, SN74ABT240APWR, Buffer, Inverting, 3-State, 4.5V ~ 5.5V supply, 2 elements, 4 bits per element, 32mA/64mA output, -40°C to 85°C, Surface Mount, 20-TSSOP.
$1.06Ref. price · indicative, final on quote
Packaging20-TSSOP (0.173", 4.40mm Width)
RoHSROHS3 Compliant
Series74ABT
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Series | 74ABT |
| Logic type | Buffer, Inverting |
| Output type | 3-State |
| Mounting | Surface Mount |
| Supply voltage | 4.5V ~ 5.5V |
| Current - output high, low | 32mA, 64mA |
| Operating temperature | -40°C ~ 85°C (TA) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Case | 20-TSSOP (0.173\", 4.40mm Width) |
| Number of elements | 2 |
| Number of bits per element | 4 |
Product details
Frequently asked questions
Is SN74ABT240APWR compatible with 5V systems?
Yes. The supply voltage range is 4.5 V to 5.5 V, so it operates directly on a 5 V rail. The inputs are TTL-compatible, and the 3-state outputs drive 5 V CMOS loads.
Is SN74ABT240APWR obsolete or active?
Active. The lifecycle status is Active with ROHS3 compliance. No discontinuation notice is in effect.
What is the difference between SN74ABT240APWR and SN74ABT240APW?
The SN74ABT240APWR is supplied in Tape & Reel packaging, while the SN74ABT240APW is supplied in Tube packaging. The die and electrical specifications are identical.