IN74HC157A

TECHNICAL DATA IN74HC157A Quad 2-Input Data Selectors/Multiplexer The IN74HC157A is identical in pin out to the LS/ALS157. The device inputs are compatible with standard CMOS outputs; with pull up resistors, they are compatible with LS/ALSTTL outputs. This device routes 2 nibbles (A or B) to a single port (Y) as determined by the Select input. The data is presented at the outputs in non inverted form. A high level on the Output Enable input sets all four Y outputs to a low level. Outputs Directly Interface to CMOS, NMOS, and TTL Operating Voltage Range: 2.0 to 6.0 V Low Input Current: 1.0 µA High Noise Immunity Characteristic of CMOS Devices ORDERING INFORMATION IN74HC157AN Plastic IN74HC157AD SOIC TA = -55° to 125° C for all packages PIN ASSIGNMENT LOGIC DIAGRAM FUNCTION TABLE Inputs Output Enable PIN 16 =VCC PIN 8 = GND Select X L H Outputs Y0-Y3 L A0-A3 B0-B3 w w w .d e e h s a t a . u t4 m o c H L L X=don’t care A0-A3, B0-B3=the levels of the respective Data-Word Inputs 1 www.DataSheet4U.com IN74HC157A MAXIMUM RATINGS* Symbol VCC VIN VOUT IIN IOUT ICC PD Tstg TL * Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage (Referenced to GND) DC Output Voltage (Referenced to GND) DC Input Current, per Pin DC Output Current, per Pin DC Supply Current, VCC and GND Pins Power Dissipation in Still Air, Plastic DIP SOIC Package** Storage Temperature Lead Temperature, 1 mm from Case for 10 Seconds (Plastic DIP or SOIC Package) ** Value -0.5 to +...