74VCXH32245LBR datasheet(6/10 Pages) STMICROELECTRONICS

6 / 10 page

74VCXH32245

6/10

AC ELECTRICAL CHARACTERISTICS

1) Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switch-

ing in the same direction, either HIGH or LOW (tOSLH = | tPLHm - tPLHn|, tOSHL = | tPHLm - tPHLn|

2) Parameter guaranteed by design

CAPACITIVE CHARACTERISTICS

1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without

load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/16 (per

circuit)

Symbol

Parameter

Test Condition

Value

Unit

VCC

(V)

-40 to 85 °C

Min.

Max.

tPLH tPHL

Propagation Delay Time

2.3 to 2.7

1.0

3.2

3.0 to 3.6

0.8

2.5

tPZL tPZH

Output Enable Time

2.3 to 2.7

1.0

4.9

3.0 to 3.6

0.8

3.8

tPLZ tPHZ

Output Disable Time

2.3 to 2.7

1.0

4.2

3.0 to 3.6

0.8

3.7

tOSLH

tOSHL

Output To Output Skew Time

(note1, 2)

2.7 to 3.6

0.5

3.0 to 3.6

0.5

Symbol

Parameter

Test Condition

Value

Unit

VCC

(V)

TA = 25 °C

Min.

Typ.

Max.

CIN

Input Capacitance

2.5 or 3.3

VI = 0V or VCC

4pF

COUT

Output Capacitance

2.5 or 3.3

VI = 0V or VCC

8pF

CPD

Power Dissipation Capacitance

(note 1)

2.5 or 3.3

fIN = 10MHz

VI = 0V or VCC

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