What this 74FCT inverting buffer does on the bus
The CY74FCT2240CTQCT is a dual 4-bit inverting buffer with 3-state outputs from the 74FCT logic family, designed for bus-oriented systems where signal inversion and output disable are needed. The 3-state outputs let multiple devices share a common data line without contention — the buffer goes high-impedance when the output-enable is deasserted, which is the standard approach for bidirectional bus isolation.
20-SSOP footprint and surface-mount assembly
The narrow SSOP footprint matches many 20-pin SOIC patterns with a smaller pitch, so verify the land pattern against your existing board before committing the BOM line. Surface-mount assembly is standard for reflow profiles; no special handling beyond MSL precautions.
Industrial temperature grade and environment
The 5V supply rail is common in these settings, and the 74FCT family's bipolar-CMOS process gives it the drive strength to handle capacitive bus loads without excessive propagation delay.
Output drive and 3-state control
Each output can source 15 mA and sink 12 mA, which is typical for 5V bus buffers driving a few TTL loads or a short backplane trace. The 3-state outputs are controlled by the element's output-enable pins (not individually per bit), so the two 4-bit banks can be independently disabled. This matters when you need to isolate one bus segment during power sequencing or boundary scan.
Lifecycle and sourcing posture
It is ROHS3 compliant.