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onsemi 74AC540SJ — Signal Isolation

onsemi 74AC540SJ Buffer, Inverting, 3-State, 20-SOIC

MPN74AC540SJ
End of Life

onsemi 74AC series Buffer, Inverting, 3-State output, 8-bit, 2V-6V supply, 24mA drive, -40°C to 85°C, 20-SOIC (5.30mm width), ROHS3 compliant.

$0.46Ref. price · indicative, final on quote
onsemi 74AC540SJ datasheet (PDF)
Packaging20-SOIC (0.209", 5.30mm Width)
RoHSROHS3 Compliant
Series74AC
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

74AC540SJ specifications
ParameterValue
Series74AC
Logic typeBuffer, Inverting
Output type3-State
MountingSurface Mount
Supply voltage2V ~ 6V
Current - output high, low24mA, 24mA
Operating temperature-40°C ~ 85°C (TA)
PackageBulk
Case20-SOIC (0.209\", 5.30mm Width)
Number of elements1
Number of bits per element8

Product details

Active production — BOM-fit for current designs

The 74AC540SJ: Its 8-bit inverting buffer with 3-state outputs isolates bus lines or drives high-fan-out loads in mixed-voltage systems spanning 2V to 6V.

24mA drive and industrial temperature range

Each output sources or sinks 24mA, enough to drive multiple CMOS inputs or a moderate capacitive trace without external buffers — the 3-state control lets multiple drivers share a bus without contention. The 20-SOIC (5.30mm body width) footprint is a standard JEDEC outline — no special pad geometry required for reflow assembly.

ROHS3 compliance and supply posture

ROHS3 compliant, the 74AC540SJ meets EU Directive 2015/863 without exemptions — no lead, mercury, cadmium, or phthalates in the package or plating.

Frequently asked questions

What is the 74AC540SJ used for?

It is an 8-bit inverting buffer with 3-state outputs, used to drive bus lines or isolate logic sections in systems operating from 2V to 6V.

What compliance documentation does onsemi provide for the 74AC540SJ?

The part is ROHS3 compliant; onsemi provides the RoHS certificate and material declaration on request.