M74HC14 datasheet(5/14 Pages) STMICROELECTRONICS

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M74HC14

Electrical characteristics

5/14

Table 7.

AC electrical characteristics (CL = 50 pF, Input tr = tf = 6 ns)

Symbol

Parameter

Test condition

Value

Unit

VCC

(V)

TA = 25 °C

-40 to 85 °C

-55 to

125 °C

Min

Typ

Max

Min

Max

Min

Max

tTLH tTHL

Output transition

time

2.0

110

4.5

6.0

tPLH tPHL

Propagation delay

time

2.0

125

155

190

4.5

6.0

Table 8.

Capacitive characteristics

Symbol

Parameter

Test condition

Value

Unit

VCC

(V)

TA = 25°C

-40 to 85°C

-55 to

125°C

Min

Typ

Max

Min

Max

Min

Max

CIN

Input capacitance

5.0

CPD

Power dissipation

capacitance(1)

5.0

fIN = 10 MHz

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/6(per gate).

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