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Advanced CMOS TTL Input – 74ACT74 

Rev 1.0

21/11/19

Absolute Maximum Ratings1

PARAMETER

SYMBOL

VALUE

UNIT

DC Supply Voltage (Referenced to GND)

VCC

-0.5 to +7.0

V

DC Input or Output Voltage (Referenced to GND)

VIN, VOUT

-0.5 to VCC+0.5

V

Storage Temperature Range

TSTG

-65 to 150

°C

Input Current (per Pad)

IIN

±20

mA

Output Current (per Pad)

IOUT

±50

mA

DC Supply Current, VCC or GND, per pad

ICC

±50

mA

Power Dissipation in Still Air

2

PD

750

mW

 1.  Operation above the absolute maximum rating may cause device failure. Operation at the absolute maximum ratings, for extended periods, may

reduce device reliability. 2. Measured in plastic DIP package, results in die form are dependent on die attach and assembly method.

Recommended Operating Conditions3 (Voltages Referenced to GND)

3. This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, precautions must be taken

to avoid applications of any voltage higher than maximum rated voltages to this high-impedance circuit. For proper operation, VIN and VOUT should be

constrained to the range GND ≤ (VIN or VOUT) ≤ VCC. Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC).

Unused outputs must be left open.

 

PARAMETER

SYMBOL

MIN

MAX

UNITS

DC Supply Voltage

VCC

4.5

5.5

V

DC Input or Output Voltage

VIN ,VOUT

0

VCC

V

Operating Temperature Range

TJ

-40

+85

°C

Output current - High

IOH

-

-24

mA

Output current - Low

IOL

-

24

mA

VCC = 4.5V

0

10

Input Rise or Fall rate

(VIN from 0.8V to 2V)

VCC = 5.5V

Δt/ΔV

0

8

ns/V

 

DC Electrical Characteristics (Voltages referenced to GND)

4.  -40˚C ≤ TJ ≤ +85˚C 5. All outputs loaded; thresholds on input associated with output under test. 6. Test time 1sec max, measurement made by

forcing indicated current and measuring voltage to minimize power dissipation. Test verifies a minimum 75Ω transmission-line drive capability at 125°C

LIMITS

PARAMETER

SYMBOL

VCC

CONDITIONS

25°C

85°C

FULL RANGE

4

UNITS

4.5V

2

2

2

Minimum High-Level

Input Voltage

VIH

5.5V

VOUT = 0.1V

or VCC -0.1V

2

2

2

V

4.5V

0.8

0.8

0.8

Maximum Low-Level

Input Voltage

VIL

5.5V

VOUT = 0.1V

or VCC -0.1V

0.8

0.8

0.8

V

4.5V

0.1

0.1

0.1

5.5V

IOUT = 50µA

0.1

0.1

0.1

V

4.5V

0.36

0.44

0.44

5.5V

VIN = VIL or VIH

5

IOL = 24mA

0.36

0.44

0.44

V

4.5V

-

-

1.65

Minimum Low-Level

Output Voltage

VOL

5.5V

VIN = VIL or VIH

5,6

IOL = 75mA

-

-

1.65

V