Logic device/transceiver/encoder

The pins 10 and 13 of this chip are floating, and it is an 8-bit shift register with output latch function, which is slightly different from the technical parameters of the standard 74HC595D, please read the technical manual in detail.

SN74HC257 Quad 2-Line to 1-Line Data Selector/Multiplexer with 3-State Outputs

NOR gate

CMOS Presettable BCD Up/Down Counter (Dual Clock with Reset) 16-SO -55 to 125

Single 2-input, 1.65V to 5.5V NAND gate with open-drain output 5-SOT-23 -40 to 125

CD74HC4050 High Speed ​​CMOS Logic Hex Non-inverting Buffer