SL74HC192

System Logic

Semiconductor

SLS

Guaranteed Limit

Symbol

Parameter

Test Conditions

V

25

°C

to

-55

°C

≤85

°C

≤125

°C

Unit

Minimum High-Level

Input Voltage

I

OUT

≤ 20 µA

2.0

4.5

6.0

1.5

3.15

4.2

1.5

3.15

4.2

1.5

3.15

4.2

V

Maximum Low -Level

Input Voltage

I

OUT

 ≤ 20 µA

2.0

4.5

6.0

0.3

0.9

1.2

0.3

0.9

1.2

0.3

0.9

1.2

V

Minimum High-Level

Output Voltage

I

OUT

 ≤ 20 µA

2.0

4.5

6.0

1.9

4.4

5.9

1.9

4.4

5.9

1.9

4.4

5.9

V

I

OUT

 ≤ 4.0 mA

I

OUT

 ≤ 5.2 mA

4.5

6.0

3.98

5.48

3.84

5.34

3.7

5.2

Maximum Low-Level

Output Voltage

I

OUT

 ≤ 20 µA

2.0

4.5

6.0

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

V

I

OUT

 ≤ 4.0 mA

I

OUT

 ≤ 5.2 mA

4.5

6.0

0.26

0.26

0.33

0.33

0.4

0.4

Maximum Input

Leakage Current

6.0

±0.1

±1.0

±1.0

µA

Maximum Quiescent

Supply Current

(per Package)

µA

6.0

8.0

80

160

µA

FUNCTION TABLE

Inputs

Mode

MR

PL

H

X

X

X

Reset(Asyn.)

L

L

X

X

Preset(Asyn.)

L

H

H

No Count

L

H

H

Count Up

L

H

H

Count Down

L

H

H

No Count

X = don’t care

The IN74HC192 can be preset to any state, but

will not count beyond 9. If preset to state 10, 11, 12, 13,

14 or 15, it will follow the sequence 10, 11, 6: 12, 13, 4:

14, 15, 2 if counting Up, and follow the sequence 15,

14, 13, 12, 11, 10, 9 if counting Down.

Logic equations

For Terminal Count:

• Q

3

• CP

U

• Q

1

• Q

2

• Q

3

• CP

D