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.

• 5V tolerant inputs and outputs
• 2.3V-3.6V V_CC specifications provided
• 6.0 ns t_PD max (V_CC = 3.3V, I_n → Z_n), 10 µA I_CC max
• Power down high impedance inputs and outputs
• Supports live insertion/withdrawal (Note 1)
• Implements patented noise/EMI reduction circuitry
• Latch-up performance exceeds 500 mA
• ESD performance:

  Human body model > 2000V

  Machine model > 200V