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MC74ACT20

Dual 4−Input NAND Gate

ON Semiconductor 

MC74AC20, MC74ACT20

RECOMMENDED OPERATING CONDITIONS

Symbol

Parameter

Min

Typ

Min

Unit

VCC

Supply Voltage

′AC

2.0

5.0

6.0

′ACT

4.5

5.0

5.5

V

VREG

tr, tf

tr, tf

TJ

TA

IOH

IOL

DC Regulated Power Voltage (Ref. to GND)

Input Rise and Fall Time (Note 1)

′AC Devices except Schmitt Inputs

Input Rise and Fall Time (Note 2)

′ACT Devices except Schmitt Inputs

Junction Temperature (PDIP)

Operating Ambient Temperature Range

Output Current − HIGH

Output Current − LOW

0

VCC @ 3.0 V

−

VCC @ 4.5 V

−

VCC @ 5.5 V

−

VCC @ 4.5 V

−

VCC @ 5.5 V

−

−

−

VCC

V

150

−

40

−

ns/V

25

−

10

−

ns/V

8.0

−

−

140

°C

−40

25

85

°C

−

−

−24

mA

−

−

24

mA

1. Vin from 30% to 70% VCC; see individual Data Sheets for devices that differ from the typical input rise and fall times.

2. Vin from 0.8 V to 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times.

DC CHARACTERISTICS

74AC

74AC

Symbol

Parameter

VCC

(V)

TA = +25°C

TA =

−40°C to

+85°C

Unit

Conditions

Typ Guaranteed Limits

VIH

Minimum High Level

Input Voltage

3.0

1.5 2.1

2.1

4.5 2.25 3.15

3.15

5.5 2.75 3.85

3.85

VOUT = 0.1 V

V

or VCC − 0.1 V

VIL

Maximum Low Level

Input Voltage

3.0

1.5 0.9

0.9

4.5 2.25 1.35

1.35

5.5 2.75 1.65

1.65

VOUT = 0.1 V

V

or VCC − 0.1 V

VOH

Minimum Low Level

Output Voltage

3.0 2.99 2.9

2.9

4.5 4.49 4.4

4.4

5.5 5.49 5.4

5.4

IOUT = − 50 mA

V

3.0

− 2.56

2.46

4.5

− 3.86

3.76

5.5

− 4.86

4.76

*VIN = VIL or VIH

− 12 mA

V

IOH

− 24 mA

− 24 mA

VOL

Maximum Low Level

Output Voltage

3.0 0.002 0.1

0.1

4.5 0.001 0.1

0.1

5.5 0.001 0.1

0.1

IOUT = 50 mA

V

3.0

− 0.36

0.44

4.5

− 0.36

0.44

5.5

− 0.36

0.44

*VIN = VIL or VIH

V

IOL

12 mA

24 mA

24 mA

IIN

Maximum Input

Leakage Current

5.5

− ±0.1

±1.0

mA

VI = VCC, GND

IOLD

IOHD

†Minimum Dynamic

Output Current

5.5

−

−

75

5.5

−

−

−75

mA

VOLD = 1.65 V Max

mA

VOHD = 3.85 V Min

ICC

Maximum Quiescent

Supply Current

5.5

−

4.0

40

mA

VIN = VCC or GND

*All outputs loaded; thresholds on input associated with output under test.

†Maximum test duration 2.0 ms, one output loaded at a time.

NOTE: IIN and ICC @ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V.

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