7-1249

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 1999

CD4555BMS

CD4556BMS

CMOS Dual Binary to 1 of 4

Decoder/Demultiplexers

Pinouts

CD4556BMS

TOP VIEW

CD4555BMS

TOP VIEW

Functional Diagrams

CD4555BMS

CD4556BMS

14

15

16

9

13

12

11

10

1

2

3

4

5

7

6

8

E

A

B

Q0

Q1

Q2

VSS

Q3

VDD

A

B

Q0

Q1

Q2

Q3

E

1/2 OF DUAL

1/2 OF DUAL

14

15

16

9

13

12

11

10

1

2

3

4

5

7

6

8

E

A

B

Q0

Q1

Q2

VSS

Q3

VDD

A

B

Q0

Q1

Q2

Q3

E

1/2 OF DUAL

1/2 OF DUAL

2

3

1

14

13

15

A

B

E

4

5

6

7

12

11

10

9

Q0

Q1

Q2

Q3

A

B

E

Q0

Q1

Q2

Q3

16

8

VSS

VDD

2

3

1

14

13

15

A

B

E

4

5

6

7

12

11

10

9

Q0

Q1

Q2

Q3

A

B

E

Q0

Q1

Q2

Q3

16

8

VSS

VDD

Features

• High Voltage Type (20V Rating)

• CD4555BMS: Outputs High on Select

• CD4556BMS: Outputs Low on Select

• Expandable with Multiple Packages

• 100% Tested for Quiescent Current at 20V

• Standardized, Symmetrical Output Characteristics

• Maximum Input Current of 1

µA at 18V Over Full Pack-

• Noise Margin (Over Full Package/Temperature Range)

- 1V at VDD = 5V

- 2V at VDD = 10V

- 2.5V at VDD = 15V

• 5V, 10V and 15V Parametric Ratings

• Meets All Requirements of JEDEC Tentative Standard

No. 13B, “Standard Specifications for Description of

‘B’ Series CMOS Devices”

Applications

• Decoding

• Code Conversion

• Demultiplexing (Using Enable Input as a Data Input

• Memory Chip-Enable Selection

• Function Selection

Description

CD4555BMS and CD4556BMS are dual one-of-four decod-

ers/demultiplexers. Each decoder has two select inputs (A

and B), an Enable input (E), and four mutually exclusive out-

puts. On the CD4555BMS the outputs are high on select; on

the CD4556BMS the outputs are low on select.

When the Enable input is high, the outputs of the

CD4555BMS

remain

low

and

the

outputs

of

the

CD4556BMS remain high regardless of the state of the

select inputs A and B. The CD4555BMS and CD4556BMS

are similar to types MC14555 and MC14556, respectively.

The CD4555BMS and CD4556BMS are supplied in these

16-lead outline packages:

Braze Seal DIP

*H46

†H4T

Frit Seal DIP

H1E

Ceramic Flatpack

H6W

*CD4555B Only

†CD4556B Only

File Number

3346

December 1992