The part is convenient to ship overseas because it is packed in a 14-DIP (0.300, 7.62mm). The advanced packaging method Tube provides high reliability. A AND Gate logic principle governs its operation. Voltage 4.75V~5.25V is needed to ensure the part's full functionality. Operational temperature extended around 0°C~70°C. Mounted in Through Hole. Output current is 400μA 8mA in the high and low states. 74LS is the series it belongs to. Try searching with 74LS21 to find device variants. Inputs are limited to 4. The device consists of 2 circuits.
SN74LS21NG4 Features
AND Gate Logic Type Operating Temperature: 0°C~70°C
SN74LS21NG4 Applications
There are a lot of Texas Instruments SN74LS21NG4 Gates and Inverters applications.