Catalog > Semiconductors > Integrated Circuits IC IC 74LS157 Multiplex/Select Quad 2-1Line 16PD 4.33 ZAR inc for 1 Each 729 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Specifications Electrical Characteristics Supply Voltage (Vcc): 4.75V – 5.25V Nominal Voltage: 5V Input HIGH (VIH): ≥ 2V Input LOW (VIL): ≤ 0.8V Output HIGH (VOH): ≥ 2.7V @ IOH = –0.4 mA Output LOW (VOL): ≤ 0.5V @ IOL = 8 mA Propagation Delay (tpd): Typical 15 ns Power Dissipation: ~20 mW Absolute Maximum Ratings Vcc: 7V Input Voltage: –0.5V to 7V Operating Temperature: 0°C to +70°C Storage Temperature: –65°C to +150°C Functional Characteristics Number of Multiplexers: 4 Inputs per MUX: 2 (A and B) Output per MUX: 1 (Y) Select Input: Common select line (S) for all four MUXes Enable Input: Active LOW (G) controls whether outputs are active Logic Function: Routes selected input (A or B) to output Y when enable is active