MC74AC646, MC74ACT646

http://onsemi.com

6

AC OPERATING REQUIREMENTS

74AC

74AC

Symbol

Parameter

VCC*

(V)

TA = +25°C

CL = 50 pF

TA = –40°C

to +85

°C

CL = 50 pF

Unit

Fig.

No.

Typ

Guaranteed Minimum

ts

Setup Time, HIGH or LOW

3.3

2.0

5.0

5.5

ns

3–9

ts

Bus to Clock

5.0

1.5

4.0

4.5

ns

3–9

th

Hold Time, HIGH or LOW

3.3

–1.5

0

0

ns

3–9

th

Bus to Clock

5.0

–0.5

0.5

1.0

ns

3–9

tw

Clock Pulse Width

3.3

2.0

3.5

4.5

ns

3–6

tw

HIGH or LOW

5.0

2.0

3.5

3.5

ns

3–6

*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

74ACT

74ACT

Symbol

Parameter

VCC

(V)

TA = +25°C

TA =

–40

°C to

+85

°C

Unit

Conditions

Typ

Guaranteed Limits

VIH

Minimum High Level

4.5

1.5

2.0

2.0

V

VOUT = 0.1 V

g

Input Voltage

5.5

1.5

2.0

2.0

V

or VCC – 0.1 V

VIL

Maximum Low Level

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

4.5

4.49

4.4

4.4

V

IOUT = –50 µA

g

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

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

55

–

±01

±10

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

VI (OE) = VIL, VIH

3-State

C

5.5

–

±0.6

±6.0

µA

VI = VCC, GND

Current

VO = VCC, GND

IOLD

†Minimum Dynamic

Ot

t C

t

5.5

–

–

75

mA

VOLD = 1.65 V Max

IOHD

Output Current

5.5

–

–

–75

mA

VOHD = 3.85 V Min

ICC

Maximum Quiescent

55

–

80

80

µA

VIN =VCC or GND

Q

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.