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ELM407

Part Number	ELM407
Manufacturer	ELM
Description	Rotary Decoder
Published	Dec 20, 2013
Detailed Description	ELM407 Rotary Decoder - 3 wire 4x Interface Description The ELM407 is an 8 pin integrated circuit that is used to conver...
Datasheet	ELM407 PDF File

Overview

ELM407 Rotary Decoder - 3 wire 4x Interface Description The ELM407 is an 8 pin integrated circuit that is 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.
There is no need for external filtering or debounce circuits with the ELM407, as this is all performed within the integrated circuit.
After debouncing the encoder signals, the ELM407 determines the direction of shaft rotation, and then generates the appropriate outputs.
A write sequence can also be generated if the Write Enable input is at a high level when the outputs are generated.
The ELM407 provides 4x decoding of a rotary encoder signal.
If your application requires 2x decoding, please see the ELM406 (it is identical to the ELM407 in every respect, except that it provides 2x decoding).
Features • • •...

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