SN74HCS238DYYR Overview
It is embedded in a SOT-23-THN-16 package so that it can be taken anywhere.Packing the encoder in a Cut Tape case would be a good idea.The mounting of this motor encoder is in the way of Surface Mount.Decoder/Demultiplexer is a category that can be applied to the type.Ideally, it would be best to package this encoder magnetic in a 16-SOT-23-THIN case.The SN74HCS238 series includes this electrical quadrature encode.I have noticed that the encoder definition has 1 Circuit on it.
SN74HCS238DYYR Features
In SOT-23-THN-16 package
Mounting Type: Surface Mount
1 Circuit circuits

SN74HCS238DYYR Applications
There are a lot of Texas Instruments
SN74HCS238DYYR Encoders, Decoders, Converters applications.

Lighting Control
Low-voltage operation
Extended temperature range
Low power consumption
UART Interfacing
Infrared Data Communications
Audio
Automotive
Broadband
Digital Control

Package / Case	SOT-23-THN-16
Mounting Type	Surface Mount
Supplier Device Package	16-SOT-23-THIN
Mounting Style	SMD/SMT
RoHS	N
Logic Family	74HC
Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 125 C
Package	Tape & Reel (TR)
Mfr	Texas Instruments
Product Status	Active
Packaging	Cut Tape
Series	SN74HCS238
Operating Temperature	-40°C ~ 125°C
Type	Decoder/Demultiplexer
Voltage - Supply	2V ~ 6V
Circuit	1 x 3:8
Number of Circuits	1 Circuit
Current - Output High, Low	7.8mA, 7.8mA
Logic Type	CMOS
Number of Input Lines	3 Input
Voltage Supply Source	Single Supply
Independent Circuits	1
Number of Output Lines	8 Output
Product	Decoders / Demultiplexers