74AC374B datasheet(5/11 Pages) STMICROELECTRONICS

5 / 11 page

74AC374

5/11

AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500 Ω, Input tr = tf = 3ns)

(*) Voltage range is 3.3V

± 0.3V

(**) Voltage range is 5.0V

± 0.5V

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/n (per circuit)

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.

tPLH tPHL Propagation Delay

Time

CK to Q

3.3(*)

6.5

13.5

15.5

16.5

5.0(**)

5.0

9.5

10.5

12.0

tPZL tPZH Output Enable

Time

3.3(*)

7.5

12.0

13.0

14.0

5.0(**)

5.5

9.0

9.5

10.5

tPLZ tPHZ Output Disable

Time

3.3(*)

7.5

12.5

14.5

16.0

5.0(**)

6.0

11.0

12.5

CLOCK Pulse

Width HIGH or

LOW

3.3(*)

1.5

5.0

6.0

5.0(**)

1.5

4.0

5.0

Setup Time D to

CK, HIGH or LOW

3.3(*)

-0.5

5.0

5.0(**)

-0.5

4.0

Hold Time D to CK,

HIGH or LOW

3.3(*)

0.5

2.0

3.0

5.0(**)

0.5

2.0

3.0

fMAX

Maximum Clock

Frequency

3.3(*)

250

MHz

5.0(**)

100

270

100

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

COUT

Output

Capacitance

5.0

CPD

Power Dissipation

Capacitance (note

5.0

fIN = 10MHz

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