The SN74AHC04DR is an hex inverter Logic IC from Texas Instruments. It features an open drain logic output (with pullup resistor) and has TTL compatible inputs. This IC is capable of converting TTL logic signals to CMOS (Complementary Metal Oxide Semiconductor) levels and provides a high level of noise immunity. It features an input continuous current of 8mA, output continuous current of 32mA, and a standby current of 1mA. This logic IC can operate over a wide temperature range of -55°C to 125°C. It is widely used in applications such as noise suppression, level shifting, and circuit protection.