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Texas Instruments CY74FCT541ATQCT — Logic ICs

CY74FCT541ATQCT 74FCT Buffer, Non-Inverting, 3-State

MPNCY74FCT541ATQCT
End of Life

CY74FCT541ATQCT, 74FCT series, Buffer, Non-Inverting, 3-State output, 4.75V~5.25V supply, 32mA/64mA output current, -40°C to 85°C, 20-SSOP package.

$1.05Ref. price · indicative, final on quote
Texas Instruments CY74FCT541ATQCT datasheet (PDF)
Packaging20-SSOP (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Series74FCT
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

CY74FCT541ATQCT specifications
ParameterValue
Series74FCT
Logic typeBuffer, Non-Inverting
Output type3-State
MountingSurface Mount
Supply voltage4.75V ~ 5.25V
Current - output high, low32mA, 64mA
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case20-SSOP (0.154\", 3.90mm Width)
Number of elements1
Number of bits per element8

Product details

This is a single-element, 8-bit non-inverting buffer with 3-state outputs. The output drive capability — 32 mA source, 64 mA sink — is sized for driving moderate capacitive loads on parallel data buses or fanning out to multiple CMOS inputs without external line drivers.

Where it fits in the 74FCT family

The 74FCT series is a high-speed, low-power BiCMOS logic family that is functionally compatible with the 74F (Fast) series but with reduced quiescent current. The CY74FCT541ATQCT is a direct drop-in for any 74FCT541 or 74F541 footprint, though the 74FCT variant typically draws lower supply current at the same propagation delay. If you need a transceiver (bidirectional) instead of a buffer, the SN74ABT2245DW or SN74LVTH16245ADGVR are 8-bit transceivers with similar supply voltage ranges, but note the different pinouts and direction-control pins.

Frequently asked questions

Is CY74FCT541ATQCT a buffer or transceiver?

It is a non-inverting buffer with 3-state outputs. It drives signals in one direction only — from input to output. For bidirectional bus applications, a transceiver such as the SN74ABT2245DW would be the correct choice.

Is CY74FCT541ATQCT RoHS compliant?

Yes, it is ROHS3 compliant, meeting the latest EU RoHS directive without exemptions.

What are alternatives to CY74FCT541ATQCT?

For a pin-compatible 5 V buffer, the SN74ABT2245DW is a transceiver with similar supply range but different pinout. For a lower-voltage (2.7 V) transceiver, consider the SN74LVTH16245ADGVR. Neither is a direct drop-in; verify the pinout and logic function before substituting.