Board-level signal buffering with 3-state control
The Infineon CY74FCT2244ATQC is a dual-element, 4-bit-per-element buffer with inverting logic and 3-state outputs from the 74FCT series, used to drive heavily loaded bus lines or isolate backplane segments in mixed-voltage 5V systems. Operating from a 4.75V to 5.25V supply rail, it delivers 15mA output-high and 12mA output-low current, sufficient to drive the characteristic impedance of short PCB traces or feed a downstream CMOS input without external line drivers.
Supply voltage and output drive capacity
With 15mA source and 12mA sink capability per output, the CY74FCT2244ATQC can drive up to five standard LSTTL loads or feed a single 50-ohm terminated line in point-to-point routing; the 3-state control lets multiple drivers share a common bus without contention.
Active lifecycle and compliance status
The part is marked RoHS non-compliant, so it contains lead in the solder finish or die-attach material; boards requiring full RoHS exemption or lead-free assembly should verify the exemption category or select a lead-free variant from the 74FCT family.