MC74HCT74A

The MC74HCT74A is identical in pinout to the LS74. This device may be used as a level converter for interfacing TTL or NMOS outputs to High Speed CMOS inputs. The features of MC74HCT74A are as follows: (1)output drive capability: 10 LSTTL loads; (2)TTL NMOS compatible input levels; (3)outputs directly interface to CMOS, NMOS, and TTL; (4)operating voltage range: 4.5 to 5.5 V; (5)low input current: 1.0 mA; (6)in compliance with the requirements defined by JEDEC standard No. 7A; (7)chip complexity: 136 FETs or 34 Equivalent Gates.

The absolute maximum ratings of the MC74HCT74A are:(1)DC Supply Voltage (Referenced to GND): -0.5 to + 7.0V; (2)DC Input Voltage (Referenced to GND): -1.5 to VCC + 1.5V; (3)DC Output Voltage (Referenced to GND): -0.5 to VCC + 0.5; (4)DC Input Current, per Pin: ±20; (5)DC Output Current, per Pin: ±25; (6)DC Supply Current, VCC and GND Pins: ±50mA; (7)Storage Temperature: -65 to + 150; (8)Lead Temperature, 1 mm from Case for 10 Seconds (Plastic DIP or SOIC Package): 260.

The following is about the electrical characteristics of MC74HCT74A: (1)minimum high-level input voltage: 2.0V at Vout = 0.1 V or VCC -0.1 V, |Iout|20 A; (2)maximum low-level input voltage: 0.8V at Vout = 0.1 V or VCC -0.1 V, |Iout|20 A; (3)minimum high-level output voltage: 4.4V at Vin = VIH or VIL, |Iout|20 A; (4)maximum low-level output voltage: 0.1V at Vin = VIH or VIL,  |Iout|20 A; (5)maximum input leakage current: ±0.1A at Vin = VCC or GND; (6)maximum quiescent supply current (per package): 2.0A at Vin = VCC or GND, Iout = 0 A.