View m74hct258 datasheet:

M74HCT258 QUAD 2 CHANNEL MULTIPLEXER (3-STATE, INVERTING) HIGH SPEED : tPD = 17 ns (TYP.) at VCC = 4.5V LOW POWER DISSIPATION: ICC =4µA(MAX.) at TA=25°C COMPATIBLE WITH TTL OUTPUTS : VIH = 2V (MIN.) VIL = 0.8V (MAX) DIP SOP TSSOP SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 6mA (MIN) BALANCED PROPAGATION DELAYS: tPLH ? tPHL ORDER CODES PIN AND FUNCTION COMPATIBLE WITH PACKAGE TUBE T & R 74 SERIES 258 DIP M74HCT258B1R SOP M74HCT258M1R M74HCT258RM13TR DESCRIPTION TSSOP M74HCT258TTR The M74HCT258 is an high speed CMOS QUAD 2 CHANNEL MULTIPLEXER (3-STATE) fabricated with silicon gate C2MOS technology. the IC become in a High-Impedance state. If This IC is composed of an independent 2-channel SELECT input is held low, "A" data is selected, multiplexer with com