MC74AC643 MC74ACT643

5-4

FACT DATA

AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)

Symbol

Parameter

VCC*

(V)

74AC

74AC

Unit

Fig.

No.

Symbol

Parameter

VCC*

(V)

TA = +25°C

CL = 50 pF

TA = –40°C

to +85

°C

CL = 50 pF

Unit

Fig.

No.

Min

Typ

Max

Min

Max

tPLH

Propagation Delay

3.3

1.5

8.5

1.0

9.5

ns

3-5

tPLH

An to Bn or Bn to An

5.0

1.5

6.5

1.0

7.5

ns

3-5

tPHL

Propagation Delay

3.3

1.5

8.5

1.0

9.5

ns

3-5

tPHL

An to Bn or Bn to An

5.0

1.5

6.5

1.0

7.5

ns

3-5

tPZH

Output Enable Time

3.3

2.5

12.5

2.0

13.5

ns

3-7

tPZH

Output Enable Time

5.0

1.5

9.5

1.0

10.0

ns

3-7

tPZL

Output Enable Time

3.3

2.5

12.5

2.0

13.5

ns

3-8

tPZL

Output Enable Time

5.0

1.5

9.5

1.0

10.0

ns

3-8

tPHZ

Output Disable Time

3.3

2.0

12.0

1.0

12.5

ns

3-7

tPHZ

Output Disable Time

5.0

1.5

9.0

1.0

10.0

ns

3-7

tPLZ

Output Disable Time

3.3

2.0

12.0

1.5

13.5

ns

3-8

tPLZ

Output Disable Time

5.0

1.5

9.5

1.0

10.5

ns

3-8

* Voltage Range 3.3 V is 3.3 V

±0.3 V.

Voltage Range 5.0 V is 5.0 V

±0.5 V.

DC CHARACTERISTICS

Symbol

Parameter

VCC

(V)

74ACT

74ACT

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

4.5

1.5

2.0

2.0

V

VOUT = 0.1 V

Input Voltage

5.5

1.5

2.0

2.0

V

or VCC – 0.1 V

VIL

Maximum Low Level

Input Voltage

4.5

1.5

0.8

0.8

V

VOUT = 0.1 V

Input Voltage

5.5

1.5

0.8

0.8

V

or VCC – 0.1 V

VOH

Minimum High Level

Output Voltage

4.5

4.49

4.4

4.4

V

IOUT = –50 µA

Output Voltage

5.5

5.49

5.4

5.4

V

*VIN = VIL or VIH

4.5

3.86

3.76

V

IOH

–24 mA

5.5

4.86

4.76

IOH

–24 mA

VOL

Maximum Low Level

Output Voltage

4.5

0.001

0.1

0.1

V

IOUT = 50 µA

Output Voltage

5.5

0.001

0.1

0.1

V

*VIN = VIL or VIH

4.5

0.36

0.44

V

IOL

24 mA

5.5

0.36

0.44

IOL

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

∆ICCT

Additional Max. ICC/Input

5.5

0.6

1.5

mA

VI = VCC – 2.1 V

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

CC

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.