74LCX244WMX datasheet(4/12 Pages) FAIRCHILD

Part #	74LCX244WMX

Description	Low Voltage Buffer/Line Driver with 5V Tolerant Inputs and Outputs

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

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DC Electrical Characteristics (Continued)

Note 8: Outputs disabled or 3-STATE only.

AC Electrical Characteristics

Note 9: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The

specification applies to any outputs switching in the same direction, either HIGH-to-LOW (tOSHL) or LOW-to-HIGH (tOSLH).

Dynamic Switching Characteristics

Capacitance

Symbol

Parameter

Conditions

VCC

TA 40qC to 85qC

Units

(V)

Min

Max

ICC

Quiescent Supply Current

VI VCC or GND

2.3

3.6

10

PA

3.6V

d VI, VO d 5.5V (Note 8)

2.3

3.6

r10

'ICC

Increase in ICC per Input

VIH VCC 0.6V

2.3

3.6

500

PA

Symbol

Parameter

TA 40qC to 85qC, RL 500:

Units

VCC 3.3V r 0.3V

VCC 2.7V

VCC 2.5V r 0.2

CL 50 pF

CL 30 pF

Min

Max

Min

Max

Min

Max

tPHL

Propagation Delay

1.5

6.5

1.5

7.5

1.5

7.8

ns

tPLH

Data to Output

1.5

6.5

1.5

7.5

1.5

7.8

tPZL

Output Enable Time

1.5

8.0

1.5

9.0

1.5

10.0

ns

tPZH

1.5

8.0

1.5

9.0

1.5

10.0

tPLZ

Output Disable Time

1.5

7.0

1.5

8.0

1.5

8.4

ns

tPHZ

1.57.0

1.58.0

1.58.4

tOSHL

Output to Output Skew

(Note 9)

1.0

ns

tOSLH

1.0

Symbol

Parameter

Conditions

VCC

TA 25qC

Units

(V)

Typical

VOLP

Quiet Output Dynamic Peak VOL

CL 50 pF, VIH 3.3V, VIL 0V

3.3

0.8

V

CL 30 pF, VIH 2.5V, VIL 0V

2.5

0.6

VOLV

Quiet Output Dynamic Valley VOL

CL 50 pF, VIH 3.3V, VIL 0V

3.3

0.8

V

CL 30 pF, VIH 2.5V, VIL 0V

2.5

0.6

Symbol

Parameter

Conditions

Typical

Units

CIN

Input Capacitance

VCC Open, VI 0V or VCC

7.0

pF

COUT

Output Capacitance

VCC 3.3V, VI 0V or VCC

8.0

pF

CPD

Power Dissipation Capacitance

VCC 3.3V, VI 0V or VCC, f 10 MHz

25.0

pF

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