This part is a kind of semiconductor called 74LVC244A.

Function of this product has LOW VOLTAGE CMOS QUAD BUS BUFFERS.

Manufacturers : STMicroelectronics

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74LVC244A LOW VOLTAGE CMOS QUAD BUS BUFFERS (3-STATE) HIGH PERFORMANCE s 5V TOLERANT INPUTS s HIGH SPEED: tPD = 5.9ns (MAX.) at VCC = 3V s POWER DOWN PROTECTION ON INPUTS AND OUTPUTS s SYMMETRICAL OUTPUT IMPEDANCE: )|IOH| = IOL = 24mA (MIN) at VCC = 3V t(ss PCI BUS LEVELS GUARANTEED AT 24 mA cs BALANCED PROPAGATION DELAYS: utPLH ≅ tPHL ds OPERATING VOLTAGE RANGE: roVCC(OPR) = 1.65V to 3.6V (1.2V Data PRetention) tes PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 244 les LATCH-UP PERFORMANCE EXCEEDS o500mA (JESD 17) bss ESD PERFORMANCE: OHBM > 2000V (MIL STD 883 method 3015); -MM > 200V t(s)DESCRIPTION The 74LVC244A is a low voltage CMOS OCTAL ucBUS BUFFER (3-STATE) fabricated with dsub-micron silicon gate and double-layer metal rowiring C2MOS technology. It is ideal for 1.65 to 3.6 PVCC [ ... ]

74LVC244A PDF Datasheet Download