BUY CD4512BCN https://www.utsource.net/itm/p/1456350.html
8-Input Digital Multiplexer
Description: CMOS Dual 4-Input BCD-to-Decimal Decoder/Driver Features: Low Power Consumption High Noise Immunity High Speed Operation TTL Compatible Inputs Outputs Source/Sink 24 mA Outputs Can Drive LEDs Directly Inputs Clamped to VCC and Ground Inputs and Outputs Fully TTL Compatible Outputs Directly Interface to CMOS, NMOS and TTL Outputs Open Collector Outputs Can Be Wired ORed Inputs and Outputs on Separate Ports Applications: Digital Readout Digital Clock Digital Counters Digital Displays Digital Control Systems Digital Computing Systems (For reference only)