MC74AC643 MC74ACT643

5-3

FACT DATA

DC CHARACTERISTICS

Symbol

Parameter

VCC

(V)

74AC

74AC

Unit

Conditions

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

VOUT = 0.1 V

Input Voltage

4.5

2.25

3.15

3.15

V

or VCC – 0.1 V

5.5

2.75

3.85

3.85

VIL

Maximum Low Level

Input Voltage

3.0

1.5

0.9

0.9

VOUT = 0.1 V

Input Voltage

4.5

2.25

1.35

1.35

V

or VCC – 0.1 V

5.5

2.75

1.65

1.65

VOH

Minimum High Level

Output Voltage

3.0

2.99

2.9

2.9

IOUT = –50 µA

Output Voltage

4.5

4.49

4.4

4.4

V

5.5

5.49

5.4

5.4

V

*VIN = VIL or VIH

3.0

2.56

2.46

V

–12 mA

4.5

3.86

3.76

V

IOH

–24 mA

5.5

4.86

4.76

–24 mA

VOL

Maximum Low Level

Output Voltage

3.0

0.002

0.1

0.1

IOUT = 50 µA

Output Voltage

4.5

0.001

0.1

0.1

V

5.5

0.001

0.1

0.1

V

*VIN = VIL or VIH

3.0

0.36

0.44

V

12 mA

4.5

0.36

0.44

V

IOL

24 mA

5.5

0.36

0.44

24 mA

IIN

Maximum Input

Leakage Current

5.5

±0.1

±1.0

µA

VI = VCC, GND

Leakage Current

5.5

±0.1

±1.0

µA

VI = VCC, GND

IOZT

Maximum

3-State

Current

VI (OE) = VIL, VIH

3-State

Current

5.5

±0.6

±6.0

µA

VI = VCC, GND

Current

VO = VCC, GND

IOLD

†Minimum Dynamic

Output Current

5.5

75

mA

VOLD = 1.65 V Max

IOHD

Output Current

5.5

–75

mA

VOHD = 3.85 V Min

ICC

Maximum Quiescent

Supply Current

5.5

8.0

80

µA

VIN = VCC or GND

Supply Current

5.5

8.0

80

µA

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 VCC.