CD54HC190, CD74HC190

CD54HC191, CD74HC191, CD54HCT191, CD74HCT191

SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL

SCHS275E − MARCH 2002 − REVISED OCTOBER 2003

12

POST OFFICE BOX 655303

’HC190, ’HC191

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

otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

TA = 25°C

TA = −55°C

TO 125

°C

TA = −40°C

TO 85

°C

UNIT

PARAMETER

TEST CONDITIONS

VCC

MIN

MAX

MIN

MAX

MIN

MAX

UNIT

2 V

1.9

1.9

1.9

IOH = −20 µA

4.5 V

4.4

4.4

4.4

VOH

VI = VIH or VIL

IOH = −20 µA

6 V

5.9

5.9

5.9

V

VOH

VI = VIH or VIL

IOH = −4 mA

4.5 V

3.98

3.7

3.84

V

IOH = −5.2 mA

6 V

5.48

5.2

5.34

2 V

0.1

0.1

0.1

IOL = 20 µA

4.5 V

0.1

0.1

0.1

VOL

VI = VIH or VIL

IOL = 20 µA

6 V

0.1

0.1

0.1

V

VOL

VI = VIH or VIL

IOL = 4 mA

4.5 V

0.26

0.4

0.33

V

IOL = 5.2 mA

6 V

0.26

0.4

0.33

II

VI = VCC or 0

6 V

±0.1

±1

±1

µA

ICC

VI = VCC or 0,

IO = 0

6 V

8

160

80

µA

Ci

10

10

10

pF

’HCT191

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

otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

TA = 25°C

TA = −55°C

TO 125

°C

TA = −40°C

TO 85

°C

UNIT

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

MIN

MAX

MIN

MAX

UNIT

VOH

VI = VIH or VIL

IOH = −20 µA

4.5 V

4.4

4.4

4.4

V

VOH

VI = VIH or VIL

IOH = −4 mA

4.5 V

3.98

3.7

3.84

V

VOL

VI = VIH or VIL

IOL = 20 µA

4.5 V

0.1

0.1

0.1

V

VOL

VI = VIH or VIL

IOL = 4 mA

4.5 V

0.26

0.4

0.33

V

II

VI = VCC to GND

5.5 V

±0.1

±1

±1

µA

ICC

VI = VCC or 0,

IO = 0

5.5 V

8

160

80

µA

∆ICC†

One input at VCC − 2.1 V,

Other inputs at 0 or VCC

4.5 V to 5.5 V

100

360

490

450

µA

Ci

10

10

10

pF

† Additional quiescent supply current per input pin, TTL inputs high, 1 unit load

HCT INPUT LOADING TABLE

INPUTS

UNIT LOADS

A-D

0.4

CLK

1.5

LOAD

1.5

D/U

1.2

CTEN

1.5

Unit load is

nICC limit specified in electrical

characteristics table, (e.g., 360

µA max at 25°C).