MC74AC244 Просмотр технического описания (PDF) - Motorola => Freescale

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MC74AC244

OCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS

Motorola => Freescale 

MC74AC244 MC74ACT244

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

74AC

74AC

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

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

3.3 2.0 6.5 9.0 1.5 10.0

ns

3-5

5.0 1.5 5.0 7.0 1.0 7.5

3.3 2.0 6.5 9.0 2.0 10.0

ns

3-5

5.0 1.5 5.0 7.0 1.0 7.5

3.3 2.0 6.0 10.5 1.5 11.0

ns

3-7

5.0 1.5 5.0 7.0 1.5 8.0

3.3 2.5 7.5 10.0 2.0 11.0

ns

3-8

5.0 1.5 5.5 8.0 1.5 8.5

3.3 3.0 7.0 10.0 1.5 10.5

ns

3-7

5.0 2.5 6.5 9.0 1.0 9.5

3.3 2.5 7.5 10.5 2.5 11.5

ns

3-8

5.0 2.0 6.5 9.0 2.0 9.5

74ACT

74ACT

Symbol

Parameter

VCC

(V)

TA = +25°C

TA =

–40°C to +85°C

Unit

Conditions

Typ Guaranteed Limits

VIH

VIL

VOH

Minimum High Level

Input Voltage

Maximum Low Level

Input Voltage

Minimum High Level

Output Voltage

4.5

1.5 2.0

2.0

5.5

1.5 2.0

2.0

4.5

1.5 0.8

0.8

5.5

1.5 0.8

0.8

4.5 4.49 4.4

4.4

5.5 5.49 5.4

5.4

V

VOUT = 0.1 V

or VCC – 0.1 V

V

VOUT = 0.1 V

or VCC – 0.1 V

V

IOUT = –50 µA

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

*VIN = VIL or VIH

V

IOH

–24 mA

–24 mA

V

IOUT = 50 µA

IIN

Maximum Input

Leakage Current

*VIN = VIL or VIH

4.5

5.5

0.36

0.44

0.36

0.44

V

IOL

24 mA

24 mA

5.5

±0.1

±1.0

µA

VI = VCC, GND

∆ICCT

IOZ

IOLD

IOHD

ICC

Additional Max. ICC/Input

Maximum

3-State

Current

†Minimum Dynamic

Output Current

Maximum Quiescent

Supply Current

5.5

0.6

1.5

5.5

±0.5

±5.0

5.5

75

5.5

–75

5.5

8.0

80

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

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

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

FACT DATA

5-4

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