7-788

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

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CD4028BMS

CMOS BCD-To-Decimal Decoder

Pinout

CD4028BMS

TOP VIEW

Functional Diagram

14

15

16

9

13

12

11

10

1

2

3

4

5

7

6

8

4

2

0

7

9

5

VSS

6

VDD

1

B

C

D

A

8

3

3

14

2

15

1

6

7

4

9

5

BUFFERED

OCTAL

DECODED

OUTPUTS

(1 OF 8)

BUFFERED

DECIMAL

DECODED

OUTPUTS

(1 OF 10)

10

13

12

11

3-BIT

BINARY

INPUTS

BCD

INPUTS

A

B

C

D

0

1

2

3

4

5

6

7

8

9

8

16

Features

• High Voltage Type (20V Rating)

• BCD-to-Decimal Decoding or Binary-to-Octal Decoding

• High Decoded Output Drive Capability

• “Positive Logic” Inputs and Outputs - Decoded Out-

puts Go High On Selection

• Medium-Speed Operation

- tPHL, tPLH = 80ns (typ) at VDD = 10V

• Standardized Symmetrical Output Characteristics

• 100% Tested For Quiescent Current at 20V

• Maximum Input Current of 1

µA at 18V Over Full

Package-Temperature Range;

• 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

• Code Conversion

• Indication-Tube Decoder

• Address Decoding - Memory Selection Control

Description

CD4028BMS types are BCD-to-decimal or binary-to-octal

decoders consisting of buffering on all 4 inputs, decoding

logic gates, and 10 output buffers. A BCD code applied to

the four inputs, A to D, results in a high level at the selected

one of 10 decimal decoded outputs. Similarly, a 3-bit binary

code applied to inputs A through C is decoded in octal code

at output 0 to 7 if D = “0”. High drive capability is provided at

all outputs to enhance dc and dynamic performance in high

fan-out applications.

The CD4028BMS is supplied in these 16-lead outline pack-

ages:

Braze Seal DIP

H4S

Frit Seal DIP

H1E

Ceramic Flatpack H3X

December 1992

File Number

3303