View m74hc158 datasheet:

M74HC158 QUAD 2 CHANNEL MULTIPLEXER (INV.) HIGH SPEED: tPD = 14ns (TYP.) at VCC = 6V LOW POWER DISSIPATION: ICC = 4µA(MAX.) at TA=25°C HIGH NOISE IMMUNITY: VNIH = VNIL = 28 % VCC (MIN.) DIP SOP TSSOP SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 4mA (MIN) BALANCED PROPAGATION DELAYS: tPLH ? tPHL ORDER CODES OUTPUTS DRIVE CAPABILITY PACKAGE TUBE T & R 10 LSTTL LOADS DIP M74HC158B1R WIDE OPERATING VOLTAGE RANGE: SOP M74HC158M1R M74HC158RM13TR VCC (OPR) = 2V to 6V TSSOP M74HC158TTR PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 158 When the STROBE input is held high, selection of DESCRIPTION data is inhibited and all the outputs become high. The M74HC158 is an high speed CMOS QUAD 2 The SELECT decoding determines whether the A CHANNEL MULTIPLEXER fabricated w