M74HCT161 datasheet(9/16 Pages) STMICROELECTRONICS

9 / 16 page

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

Symbol

Parameter

Test Conditions

Value

Unit

VCC

(V)

TA =25

54HC and 74HC

-40 to 85

74HC

-55 to 125

54HC

Min.

Typ.

Max.

Min.

Max.

Min.

Max.

tTLH

tTHL

Output Transition

Time

4.5

151922

tPLH

tPHL

Propagation

Delay Time

(CK - Q)

4.5

tPLH

tPHL

Propagation

Delay Time

(CK-CO)

4.5

tPLH

Propagation

Delay Time

(TE-CO)

4.5

tPLH

Propagation

Delay Time

(CLEAR - Q)

4.5

for

HCT160/161

only

tPHL

Propagation

Delay Time

(CLEAR-CO)

4.5

for

HCT160/161

only

fMAX

Maximum Clock

Frequency

4.5

MHz

tW(H)

tW(L)

Minimum Pulse

Width (CK)

4.5

151922

tW(L)

Minimum Pulse

Width

(CLEAR)

4.5

for

HCT160/161

only

151922

Minimum Set-up

Time

(LOAD, PE, TE)

4.5

Minimum Set-up

Time

(A, B, C, D)

4.5

151922

Minimum Set-up

Time

(CLEAR)

4.5

for

HCT162/163

only

151922

Minimum Hold

Time

4.5

tREM

Minimum

Removal Time

(CLEAR)

4.5

for

HCT160/161

only

151922

CIN

Input Capacitance

CPD (*)

Power Dissipation

Capacitance

(*) 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 operting current can be obtained by the following equation. ICC(opr) = CPD

•VCC •fIN +ICC

M54/M74HCT160/161/162/163

9/16

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