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MC74ACT244

Octal Buffer/Line Driver with 3-State Outputs

ON Semiconductor 

MC74AC244, MC74ACT244

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

74AC

Symbol

Parameter

VCC*

(V)

TA = +25°C

CL = 50 pF

tPLH

tPHL

tPZH

Propagation Delay

Data to Output

Propagation Delay

Data to Output

Output Enable Time

tPZL

Output Enable Time

tPHZ

Output Disable Time

tPLZ

Output Disable Time

*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

VIH

VIL

VOH

Minimum High Level

Input Voltage

Maximum Low Level

Input Voltage

Minimum High Level

Output Voltage

Min Typ Max

3.3 2.0 6.5 9.0

5.0 1.5 5.0 7.0

3.3 2.0 6.5 9.0

5.0 1.5 5.0 7.0

3.3 2.0 6.0 10.5

5.0 1.5 5.0 7.0

3.3 2.5 7.5 10.0

5.0 1.5 5.5 8.0

3.3 3.0 7.0 10.0

5.0 2.5 6.5 9.0

3.3 2.5 7.5 10.5

5.0 2.0 6.5 9.0

VCC

(V)

4.5

5.5

4.5

5.5

4.5

5.5

74ACT

74ACT

TA = +25°C

TA =

–40°C to

+85°C

Typ Guaranteed Limits

1.5 2.0

2.0

1.5 2.0

2.0

1.5 0.8

0.8

1.5 0.8

0.8

4.49 4.4

4.4

5.49 5.4

5.4

VOL

Maximum Low Level

Output Voltage

4.5

– 3.86

3.76

5.5

– 4.86

4.76

4.5 0.001 0.1

0.1

5.5 0.001 0.1

0.1

IIN

Maximum Input

Leakage Current

4.5

– 0.36

0.44

5.5

– 0.36

0.44

5.5

– ±0.1

±1.0

∆ICCT

IOZ

Additional Max. ICC/Input

Maximum

3–State

Current

5.5

0.6

–

1.5

5.5

– ±0.5

±5.0

IOLD

IOHD

ICC

†Minimum Dynamic

Output Current

Maximum Quiescent

Supply Current

5.5

–

–

75

5.5

–

–

–75

5.5

–

8.0

80

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

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

74AC

TA = –40°C

to +85°C

CL = 50 pF

Unit

Fig.

No.

Min Max

1.5 10.0

1.0 7.5

ns

3–5

2.0 10.0

1.0 7.5

ns

3–5

1.5 11.0

1.5 8.0

ns

3–7

2.0 11.0

1.5 8.5

ns

3–8

1.5 10.5

1.0 9.5

ns

3–7

2.5 11.5

2.0 9.5

ns

3–8

Unit

Conditions

V

VOUT = 0.1 V

or VCC – 0.1 V

V

VOUT = 0.1 V

or VCC – 0.1 V

V

IOUT = –50 µA

*VIN = VIL or VIH

V

–24 mA

IOH

–24 mA

V

IOUT = 50 µA

*VIN = VIL or VIH

V

24 mA

IOL

24 mA

µA

VI = VCC, GND

mA

VI = VCC – 2.1 V

VI (OE) = VIL, VIH

µA

VI = VCC, GND

VO = VCC, GND

mA

VOLD = 1.65 V Max

mA

VOHD = 3.85 V Min

µA

VIN = VCC or GND

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