KK74HC251A Datasheet | Kodenshi AUK Group

TECHNICAL DATA 8-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS The KK74HC251A is identical in pinout to the LS/ALS251. The device inputs are patible with standard CMOS outputs; with pullup resistors, they are patible with LS/ALSTTL outputs. The device selects one of the eight binary Data Inputs, as determined by the Address Inputs. The Output Enable pin must be at a low level for the selected data to appear at the outputs. If Output Enable is high, the Y and the Y outputs are in the high-impedance state. This 3-State feature allows the KK74HC251A to be used in bus-oriented systems. - 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 KK74HC251AN Plastic KK74HC251AD SOIC TA = -55° to 125° C for all packages PIN ASSIGNMENT LOGIC DIAGRAM FUNCTION TABLE Inputs A2 X L L L L PIN 16 =VCC PIN 8 = GND H H H A1 X L L H H L L H A0 X L H L H L H L OE H L L L L L L L Outputs Y Z D0 D1 D2 D3 D4 D5 D6 Y Z D0 D1 D2 D3 D4 D5 D6 H H H L D7 D7 D0,D1...D7=the level of the respective D input Z = high-impedance state X = don’t care ..net 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 +7.0 -1.5 to VCC +1.5 -0.5 to VCC +0.5 ±25 ±50 ±75 750 500 -65 to +150 260 Unit V V V m A m A m A m W °C °C Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Remended Operating Conditions. +Derating -...