SN74LVC244APWR

SN74LVC244APWR is a Texas Instruments octal bus buffer in 20-pin TSSOP — for driving data buses and level-translating between logic domains: eight high-speed CMOS buffers organized as two 4-bit sections with 3-state outputs, 1.65V to 3.6V VCC operation, inputs accept up to 5.5V for mixed-mode 5V/3.3V systems, 5.9ns max propagation delay at 3.3V. The Ioff circuitry supports live insertion and partial power-down without back-driving the bus. Selection advice: the PWR code is the TSSOP-20 reel variant — for the smallest footprint the RGY (VQFN) is the alternative; the 5.5V-tolerant inputs make it a cost-effective down-translator (5V to 3.3V/1.8V) without a dedicated level-shifter. Against the SN74HC245 on this site, the LVC244A offers higher speed and wider VCC range — choose LVC for 1.65V-3.6V systems, HC for 5V-only legacy. Parameters verified against TI documentation.