Philips hef4028b DATASHEETS

INTEGRATED CIRCUITS

DATA SH EET

For a complete data sheet, please also download:

•The IC04 LOCMOS HE4000B Logic Family Specifications HEF, HEC

•The IC04 LOCMOS HE4000B Logic Package Outlines/Information HEF, HEC

HEF4028B MSI

1-of-10 decoder

Product speciﬁcation File under Integrated Circuits, IC04

January 1995

Philips Semiconductors Product speciﬁcation

1-of-10 decoder

DESCRIPTION

The HEF4028B is a 4-bit BCD to 1-of-10 active HIGH decoder. A 1-2-4-8 BCD code applied to inputs A0 to A causes the selected output to be HIGH, the other nine will be LOW. If desired, the device may be used as a 1-of-8 decoder with enable; 3-bit octal inputs are applied to inputs A0, A1 and A2 selecting an output O0 to O7. Input A3 then becomes an active LOW enable, forcing the selected output LOW when A3 is HIGH. The HEF4028B may also be used as an 8-output (O0 to O7) demultiplexer with A0 to

as address inputs and A3 as an active LOW data input.

The outputs are fully buffered for best performance.

HEF4028B

MSI

Fig.2 Pinning diagram.

Fig.1 Functional diagram.

HEF4028BP(N): 16-lead DIL; plastic

HEF4028BD(F): 16-lead DIL; ceramic (cerdip)

HEF4028BT(D): 16-lead SO; plastic

( ): Package Designator North America

PINNING

to A

to O

FAMILY DATA, I

See Family Specifications

(SOT38-1)

(SOT74)

(SOT109-1)

address inputs, 1-2-4-8 BCD outputs (active HIGH)

LIMITS category MSI

January 1995 2

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