HCF4028B Просмотр технического описания (PDF) - STMicroelectronics

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HCF4028B

BCD TO DECIMAL DECODER

STMicroelectronics 

HCF4028B

BCD TO DECIMAL DECODER

s BCD TO DECIMAL DECODING OR BINARY

TO OCTAL DECODING

s HIGH DECODED OUTPUT DRIVE

CAPABILITY

s "POSITIVE LOGIC" INPUTS AND OUTPUTS:

DECODED OUTPUTS GO HIGH ON

SELECTION

s MEDIUM SPEED OPERATION : tPHL, tPLH =

80ns (Typ.) at VDD = 10V

s QUIESCENT CURRENT SPECIF. UP TO 20V

s STANDARDIZED SYMMETRICAL OUTPUT

CHARACTERISTICS

s INPUT LEAKAGE CURRENT

II = 100nA (MAX) AT VDD = 18V TA = 25°C

s 100% TESTED FOR QUIESCENT CURRENT

s MEETS ALL REQUIREMENTS OF JEDEC

JESD13B "STANDARD SPECIFICATIONS

FOR DESCRIPTION OF B SERIES CMOS

DEVICES"

DESCRIPTION

HCF4028B is a monolithic integrated circuit

fabricated in Metal Oxide Semiconductor

technology available in DIP and SOP packages.

HCF4028B is a BCD to DECIMAL or BINARY to

OCTAL decoder consisting of buffering on all 4

DIP

SOP

ORDER CODES

PACKAGE

TUBE

DIP

SOP

HCF4028BEY

HCF4028BM1

T&R

HCF4028M013TR

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.

PIN CONNECTION

September 2002

1/10

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