74ACT11867DW datasheet(6/11 Pages) TI1

Numer części	74ACT11867DW

Szczegółowy opis	SYNCHRONOUS 8-BIT UP/DOWN BINARY COUNTER WITH ASYNCHRONOUS CLEAR

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74ACT11867

SYNCHRONOUS 8-BIT UP/DOWN BINARY COUNTER

WITH ASYNCHRONOUS CLEAR

SCAS178A − DECEMBER 1991 − REVISED FEBRUARY 1998

6

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

V

TA = 25°C

MIN

MAX

UNIT

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

MIN

MAX

UNIT

I

50 A

4.5 V

4.4

IOH = −50 μA

5.5 V

5.4

VOH

IOH = −24 mA

4.5 V

3.94

3.8

V

VOH

IOH = −24 mA

5.5 V

4.94

4.8

V

IOH = −75 mA†

5.5 V

3.85

I

50 A

4.5 V

0.1

IOL = 50 μA

5.5 V

0.1

VOL

I

24 mA

4.5 V

0.36

0.44

V

VOL

IOL = 24 mA

5.5 V

0.36

0.44

V

IOL = 75 mA†

5.5 V

1.65

II

VI = VCC or GND

5.5 V

±0.1

±1

μA

ICC

VI = VCC or GND,

IO = 0

5.5 V

8

80

μA

ΔICC‡

One input at 3.4 V,

Other inputs at VCC or GND

5.5 V

0.9

1

mA

Ci

VI = VCC or GND

5 V

4.5

pF

† Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms.

‡ This is the increase in supply current for each input that is at one of the specified TTL voltage levels rather than 0 V or VCC.

timing requirements over recommended operating free-air temperature range, VCC = 5 V

± 0.5 V

(unless otherwise noted) (see Figure 1)

TA = 25°C

MIN

MAX

UNIT

MIN

MAX

MIN

MAX

UNIT

fclock

Clock frequency

0

70

0

70

MHz

t

Pulse duration

S0 and S1 low

12

ns

tw

Pulse duration

CLK

6.5

ns

Data

8

ENP, ENT

4

tsu§

Setup time before CLK

↑

S0, S1 (load)

11

ns

tsu

Setup time before CLK

↑

S0, S1 (count down)

11

ns

S0, S1 (count up)

11

th

Hold time after CLK

↑

Data

1

ns

tskew

Skew time between S0 and S1 to avoid inadvertent clear¶

S0 and S1 low

0

ns

§ This setup time is required to ensure stable data.

¶ This is the maximum time for which S0 and S1 can be low simultaneously when the device transitions between the load (S1 = H, S0 = L) and

count-down (S1 = L, S0 = H) modes.

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