74HC51 datasheet(4/9 Pages) STMICROELECTRONICS

No. de pieza	74HC51

Descripción Electrónicos	DUAL 2 WIDE 2 INPUT AND/OR INVERT GATE

PDF	9 Pages

Scroll/Zoom	100%

Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

Página de inicio	http://www.st.com

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4 / 9 page

M74HC51

4/9

AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr =tf = 6ns)

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 xVCC xfIN +ICC

TEST CIRCUIT

CL = 50pF or equivalent (includes jig and probe capacitance)

RT =ZOUT of pulse generator (typically 50Ω)

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

151922

6.0

131619

tPLH tPHL Propagation Delay

Time

2.0

100

125

150

4.5

6.0

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

101010

CPD

Power Dissipation

Capacitance (note

5.0

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