74LCX07 datasheet(7/16 Pages) STMICROELECTRONICS

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74LCX07

Electrical characteristics

Doc ID 6818 Rev 8

7/16

Table 8.

AC electrical characteristics

Symbol

Parameter

Test condition

Value

Unit

VCC

(V)

(pF)

(

Ω)

ts = tr

(ns)

-40 to 85 °C

Min.

Max.

tPLZ

Propagation delay time

2.7

500

2.5

7.0

3.0 to 3.6

1.0

5.2

tPZL

Propagation delay time

2.7

500

2.5

7.0

3.0 to 3.6

1.0

5.2

tOSLH

tOSHL

Output to output skew time(1), (2)

3.0 to 3.6

500

2.5

1.0

Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the

same device switching in the same direction, either HIGH or LOW (tOSLH = | tPLHm - tPLHn|, tOSHL = | tPHLm - tPHLn|).

Parameter guaranteed by design.

Table 9.

Capacitive characteristics

Symbol

Parameter

Test condition

Value

Unit

VCC

(V)

TA = 25 °C

Min.

Typ.

Max.

CIN

Input capacitance

3.3

VIN = 0 to VCC

6pF

COUT

Output capacitance

3.3

VIN = 0 to VCC

CPD

Power dissipation capacitance(1)

3.3

fIN = 10 MHz

VIN = 0 or VCC

4.3

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 Section 5: Test circuit). Average operating current can be obtained by the following

equation. ICC(opr) = CPD x VCC x fIN + ICC/6 (per gate).

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