BUY 74HCT21 https://www.utsource.net/itm/p/1518174.html
Dual 4-input AND gate4
Description: The 74HCT21 is a high-speed CMOS logic device containing two independent 2-input NAND gates.
Features:
- High-speed operation
- Low power consumption
- TTL-compatible inputs
- Outputs directly interface to CMOS, NMOS and TTL
- Outputs source/sink 24 mA
- Operating voltage range of 2 to 6 V
Applications:
- Bus interface
- Data transmission
- Memory address decoding
- Signal routing
- Level shifting
- Clock distribution
(For reference only)