HCF4056B_02 datasheet(1/10 Pages) STMICROELECTRONICS

Part #	HCF4056B

Description	BCD TO 7 SEGMENT DECODER /DRIVER WITH STROBED LATCH FUNCTION

PDF	10 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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September 2002

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QUIESCENT CURRENT SPECIF. UP TO 20V

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OPERATION OF LIQUID CRYSTALS WITH

CMOS CIRCUITS PROVIDES ULTRA LOW

POWER DISPLAY.

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EQUIVALENT AC OUTPUT DRIVE FOR

LIQUID CRYSTAL DISPLAYS - NO

EXTERNAL CAPACITOR REQUIRED

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VOLTAGE DOUBLING ACROSS DISPLAY

[(VDD - VEE) = 18V] RESULTS IN EFFECTIVE

36V (p-p) DRIVE ACROSS SELECTED

DISPLAY SEGMENTS

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LOW OR HIGH OUTPUT LEVEL DC DRIVE

FOR OTHER TYPES OF DISPLAYS

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ONE CHIP LOGIC LEVEL CONVERSION

FOR DIFFERENT INPUT AND OUTPUT

LEVEL SWINGS

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FULL DECODING OF ALL INPUT

COMBINATIONS : "0 - 9, L, H, P, A" AND

BLANK POSITIONS

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INPUT LEAKAGE CURRENT

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

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100% TESTED FOR QUIESCENT CURRENT

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MEETS ALL REQUIREMENTS OF JEDEC

JESD13B "STANDARD SPECIFICATIONS

FOR DESCRIPTION OF B SERIES CMOS

DEVICES"

DESCRIPTION

HCF4056B is a monolithic integrated circuit

fabricated

in

Metal

Oxide

Semiconductor

technology available in DIP and SOP packages.

HCF4056B is a single digit BCD to 7 segment

decoder driver circuit that provides a level shifting

function on the chip. This feature permits the BCD

input-signal swings (VDD to VSS) to be the same

as or different from the 7-segment output signal

swings (VDD to VEE). For example, the BCD

input-signal swings (VDD to VSS) may be as low as

0 to -3V, whereas the output-display drive signal

swing (VDD to VEE) may be from 0 to -5V. If VDD to

VEE exceeds 15V, VDD to VSS should be at least

4V. The 7-segment outputs are controlled by the

DISPLAY-FREQUENCY (DF) input, which causes

the selected segment outputs to be low, high, or a

square wave output (for liquid crystal displays).

HCF4056B

BCD TO 7 SEGMENT DECODER /DRIVER

WITH STROBED LATCH FUNCTION

PIN CONNECTION

ORDER CODES

PACKAGE

TUBE

T & R

DIP

HCF4056BEY

SOP

HCF4056BM1

HCF4056M013TR

DIP

SOP

Similar Part No. - HCF4056B_02

Manufacturer	Part #	Datasheet	Description
STMicroelectronics	HCF4056BC1	334Kb / 15P	LIQUID-CRYSTAL DISPLAY DRIVERS Mar-1989
	HCF4056BEY	334Kb / 15P	LIQUID-CRYSTAL DISPLAY DRIVERS Mar-1989
	HCF4056BF	334Kb / 15P	LIQUID-CRYSTAL DISPLAY DRIVERS Mar-1989
	HCF4056BM1	334Kb / 15P	LIQUID-CRYSTAL DISPLAY DRIVERS Mar-1989

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Similar Description - HCF4056B_02

Manufacturer	Part #	Datasheet	Description
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HCF4056B Datasheet(PDF) 1 Page - STMicroelectronics

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Similar Part No. - HCF4056B_02

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