74LCX257

74LCX257 Low Voltage Quad 2-Input Multiplexer with 5V Tolerant Inputs and Outputs May 1995 Revised September 2000 74LCX257 Low Voltage Quad 2-Input Multiplexer with 5V Tolerant Inputs and Outputs General Description The LCX257 is a quad 2-input multiplexer with 3-STATE outputs. Four bits of data from two sources can be selected using a Common Data Select input. The four outputs present the selected data in true (non inverted) form. The outputs may be switched to a high impedance state by placing a logic HIGH on the common Output Enable (OE) input, allowing the outputs to interface directly with bus-oriented systems. The 74LCX257 is fabricated with advanced CMOS technology to achieve high speed operation while maintaining CMOS low power dissipation. Features s 5V tolerant inputs and outputs s 2.3V–3.6V VCC specifications provided s 6.0 ns tPD max (VCC = 3.3V, In → Zn), 10 µA ICC max s Power down high impedance inputs and outputs s Supports live insertion/withdrawal (Note 1) s Implements patented noise/EMI reduction circuitry s Latch-up performance exceeds 500 mA s ESD performance: Human body model > 2000V Machine model > 200V Note 1: To ensure the high-impedance state during power up or down, OE should be tied to VCC through a pull-up resistor: the minimum value or the resistor is determined by the current-sourcing capability of the driver. Ordering Code: Order Number 74LCX257M 74LCX257SJ 74LCX257MTC Package Number M16A M16D MTC16 Package Description 16-Lead Small Outline ...