Datasheet > ELM404P

ELM404P

更新时间： 2024-09-13 11:46:03

品牌	Logo	应用领域
ELM		解码器
页数	文件大小	规格书
9页	52K
描述
Rotary Decoder - 3 wire 2x Interface

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ELM404P 数据手册

ELM404

Rotary Decoder - 3 wire 2x Interface

Description

Features

The ELM404 is an 8 pin integrated circuit that is

• Low power CMOS design

• Wide supply range – 2.0 to 5.5 volts

• Complete debouncing of the encoder inputs

• No external filtering needed

• 2x decoding

used to convert the output from a rotary encoder into

three signals (chip select, clock and up/down) that

can be used to control various devices. The low

power CMOS technology used ensures that only a

very small current is required over the entire 2.0 to

5.5 volt operating range.

• Startup delay timer

There is no need for external filtering or

debounce circuits with the ELM404, as this is all

performed within the integrated circuit. After

debouncing the encoder signals, the ELM404

determines the direction of shaft rotation, and then

generates the appropriate outputs. The polarity of

the clock output can be changed at any time to

accommodate different needs.

• High current drive outputs

Connection Diagram

PDIP and SOIC

(top view)

The ELM404 provides 2x decoding of a rotary

encoder signal. If your application requires 4x

decoding, please see the ELM405 (it is identical to

the ELM404 in every respect, except that it provides

4x decoding).

VDD

VSS

Clk

U/D

Applications

Clk

• Digital audio potentiometer controls

• Variable voltage or temperature circuits

• Positioning controls

Invert

• Tuning circuits

Block Diagram

VDD

Debounce

Circuit

Clk

U/D

Direction

Decoding

Output

Logic

VDD

Debounce

Circuit

Rotary

Encoder

Clk

Invert

ELM404DSA

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ELM404SM	ELM	获取价格	Rotary Decoder - 3 wire 2x Interface
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ELM405P	ELM	获取价格	Rotary Decoder - 3 wire 4x Interface
ELM405SM	ELM	获取价格	Rotary Decoder - 3 wire 4x Interface
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ELM406P	ELM	获取价格	Rotary Decoder - 3 wire 2x Interface
ELM406SM	ELM	获取价格	Rotary Decoder - 3 wire 2x Interface
ELM407	ELM	获取价格	Rotary Decoder - 3 wire 4x Interface
ELM407P	ELM	获取价格	Rotary Decoder - 3 wire 4x Interface
ELM407SM	ELM	获取价格	Rotary Decoder - 3 wire 4x Interface