74LVC2244A Datasheet | NXP Semiconductors

FEATURES - 5 V tolerant inputs/outputs for interfacing with 5 V logic - Wide supply voltage range of 1.2 to 3.6 V - CMOS low power consumption - Direct interface with TTL levels - Integrated 30 Ω termination resistors. DESCRIPTION The 74LVC2244A is a high-performance, low-power, low-voltage, Si-gate CMOS device, superior to most advanced CMOS patible TTL families. Inputs can be driven from either 3.3 or 5 V devices. In 3-state operation, outputs can handle 5 V. These features allow the use of these devices as translators in a mixed 3.3/5 V environment. The 74LVC2244A is an octal non-inverting buffer/line driver with 3-state outputs. The 3-state outputs are controlled by the output enable inputs 1OE and 2OE. A HIGH on n OE causes the outputs to assume a high-impedance OFF-state. Schmitt-trigger action at all inputs makes the circuit highly tolerant for slower input rise and fall times. The 74LVC2244A is designed with 30 Ω series termination resistors in both HIGH and LOW output stages to reduce line noise. QUICK REFERENCE DATA Ground = 0 V; Tamb = 25 °C; tr = tf ≤ 2.5 ns. SYMBOL t PHL/t PLH CI CPD Note 1. CPD is used to determine the dynamic power dissipation (PD in µW). PD = CPD × VCC2 × fi + Σ(CL × VCC2 × fo) where: fi = input frequency in MHz; fo = output frequency in MHz; CL = output load capacitance in p F; VCC = supply voltage in Volts; Σ(CL × VCC2 × fo) = sum of the outputs. PARAMETER propagation delay 1An to 1Yn; 2An to 2Yn input capacitance power dissipation capacitance per buffer VI = GND to VCC; note 1 CONDITIONS CL = 50 p F; VCC = 3.3 V TYPICAL 4.0 5.0 25 ns p F p F UNIT 1999 Sep 30 Philips Semiconductors Product specification Octal buffer/line driver with 30 Ω series termination resistors; 5 V input/output tolerant; 3-state FUNCTION TABLE See note 1. INPUT n OE L L H Note 1. H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state. ORDERING INFORMATION PACKAGE OUTSIDE NORTH AMERICA 74LVC2244AD 74LVC2244ADB...