TC74AC161F_12 datasheet(8/14 Pages) TOSHIBA

Il numero della parte	TC74AC161F

Spiegazioni elettronici	TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

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Produttore elettronici	TOSHIBA [Toshiba Semiconductor]

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TC74AC161,163P/F/FT

2012-02-29

8

AC Characteristics (CL = 50 pF, RL = 500 Ω, input: tr = tf = 3 ns)

Ta = 25°C

Ta =

−40 to 85°C

Characteristics

Symbol

Test Condition

VCC (V)

Min

Typ.

Max

Min

Max

Unit

Propagation delay

time

(CK-Q)

tpLH

tpHL

Figure 1

3.3 ± 0.3

5.0 ± 0.5

―

8.8

6.5

15.8

9.6

1.0

18.0

11.0

ns

Propagation delay

time

(CK-carry, count

mode)

tpLH

tpHL

Figure 1

3.3 ± 0.3

5.0 ± 0.5

―

10.4

8.1

18.4

11.8

1.0

21.6

13.5

ns

Propagation delay

time

(CK-carry, preset

mode)

tpLH

tpHL

Figure 2

3.3 ± 0.3

5.0 ± 0.5

―

12.9

9.1

22.4

13.2

1.0

25.5

15.0

ns

Propagation delay

time

(ENT-carry)

tpLH

tpHL

Figure 6

3.3 ± 0.3

5.0 ± 0.5

―

7.5

5.8

13.2

8.3

1.0

15.0

9.5

ns

Propagation delay

time

( CLR -Q)

(Note 1)

tpHL

Figure 4

3.3 ± 0.3

5.0 ± 0.5

―

10.6

7.7

18.4

11.4

1.0

21.0

13.0

ns

Propagation delay

time

(

CLR -carry)

(Note 1)

tpHL

Figure 4

3.3 ± 0.3

5.0 ± 0.5

―

12.0

8.6

21.0

12.7

1.0

24.0

14.5

ns

Maximum clock

frequency

fmax

―

3.3 ± 0.3

5.0 ± 0.5

50

90

110

140

―

50

90

―

MHz

Input capacitance

CIN

―

5

10

―

10

pF

Power dissipation

capacitance

CPD

(Note 2

―

85

―

pF

Note 1: For TC74AC161 only

Note 2: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating

current consumption without load.

Average operating current can be obtained by the equation:

ICC (opr) = CPD·VCC·fIN + ICC

When the outputs drive a capacitive load, total current consumption is the sum of CPD, and ΔICC which is

obtained from the following formula:

⎟⎟

⎠

⎞

⎜⎜

⎝

⎛

+

⋅

16

C

16

C

8

C

4

C

2

C

V

f

=

ΔI

CO

QD

QC

QB

QA

CC

CK

CC

CQA to CQD and CCO are the capacitances at QA to QD and CARRY OUT, respectively.

fCK is the input frequency of the CK.

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