BUY SN74LS01N https://www.utsource.net/itm/p/1701438.html
ti SN74LS01, Quad 2-input Positive-nand Gates With Open Collector Outputs
The SN74LS01N is a Quad 2-Input Positive-NAND Gate from Texas Instruments.
Features:
rn Inputs Include Clamp Diodes
rn Outputs Source/Sink 24mA
rn Outputs Directly Interface to CMOS, NMOS, and TTL
rn Operating Temperature Range: -55°C to 125°C
rn Package/Case: 14-DIP (0.300, 7.62mm)
Applications:
rn Logic Gates
rn Flip-Flops
rn Counters
rn Data Selectors/Multiplexers
(For reference only)