MC74HC251A

8-Input Data Selector/ Multiplexer with 3-State Outputs High−Performance Silicon−Gate CMOS MC74HC251A The MC54/74HC251 is identical in pinout to the LS251. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs. This device selects one of the eight binary Data Inputs, as determined by the Address Inputs. The Output Enable pin must be a low level for the selected data to appear at the outputs. If Output Enable is high, both the Y and the Y outputs are in the high−impedance state. This 3−state feature allows the HC251 to be used in bus−oriented systems. The HC251 is similar in function to the HC251 which does not have 3−state outputs. Features Output Drive Capability: 10 LSTTL Loads Outputs Directly Interface to CMOS, NMOS, and TTL Operating Voltage Range: 2 to 6 V Low Input Current: 1 mA High Noise Immunity Characteristic of CMOS Devices NLV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant www.onsemi.com 16 1 MARKING 16 DIAGRAMS SOIC−16 D SUFFIX CASE 751B HC251AG AWLYWW 1 16 TSSOP−16 HC 16 DT SUFFIX 251A CASE 948F ALYWG G 1 1 A WL, L YY, Y WW, W G or G = Assembly Location = Wafer Lot = Year = Work Week = Pb−Free Package (Note: Microdot may be in either location) PIN ASSIGNMENT D3 1 D2 2 16 VCC 15 D4 D1 3 14 D5 D0 4...