Toshiba Releases Industry’s First Photocouplers for High-Speed Communications That Can Operate from 2.2V

Support low-voltage peripheral circuits and enable parts reductions

Jun 30, 2020 13:30 KST

TOKYO--(Business Wire / Korea Newswire) June 30, 2020 -- Toshiba Electronic Devices & Storage Corporation (“Toshiba”) has released the industry’s first[1] photocouplers for high-speed communications that can operate with a power supply as low as 2.2V. The two devices are the “TLP2312,” which delivers at typical data transfer rate of 5Mbps, and the 20Mbps “TLP2372.” Shipments start today.

The new products are designed to operate at low voltage, starting at 2.2V, so as to work with the lower voltages of the peripheral circuits, even when used in such low level voltage circuits as 2.5V LVCMOS. This approach eliminates the need for a separate power supply to drive the photocouplers, reducing the component count.

With a low threshold input current of 1.6mA (max), and low supply current of 0.5mA (max) in their -40℃ and +125℃ operating temperature range, the new photocouplers can be directly driven by microcontrollers, reducing power consumption.

The new photocouplers are housed in 5-pin SO6 package with a maximum height of 2.3mm, securing a low profile and bringing greater freedom to component layout on printed circuit boards.


High-speed digital interfaces
(programmable logic controllers (PLCs), general purpose inverters, measuring equipment and control equipment, etc.)


Low voltage operation: VDD=2.2V to 5.5V
Low threshold input current: IFLH=1.6mA (max)
Low supply current: IDDH, IDDL =0.5mA (max)
High operating temperature rating: Topr max=125℃
High-speed data transfer rates:
5Mbps (typ.) (TLP2312)
20Mbps (typ.) (TLP2372)

Main Specifications (To view the table, please visit

[1] Among IC output photocouplers for high-speed communications, according to a survey by Toshiba, as of June 2020.
[2] At VIN=2.5V, RIN=470Ω, CIN=68pF

Follow the links below for more on the new product.

Follow the link below for more on Toshiba’s optical semiconductor devices line-up.
Optical Semiconductor Devices

To check availability of the new products at online distributors, please visit:

Customer Inquiries
Optoelectronic Device Sales & Marketing Dept.
Tel: +81-3-3457-3431

* Company names, product names, and service names may be trademarks of their respective companies.
* Information in this document, including product prices and specifications, content of services and contact information, is current on the date of the announcement but is subject to change without prior notice.

About Toshiba Electronic Devices & Storage Corporation

Toshiba Electronic Devices & Storage Corporation combines the vigor of a new company with the wisdom of experience. Since becoming an independent company in July 2017, the company has taken its place among the leading general devices companies, and offers its customers and business partners outstanding solutions in discrete semiconductors, system LSIs and HDD.

Its 24,000 employees around the world share a determination to maximize the value of its products, and emphasize close collaboration with customers to promote co-creation of value and new markets. The company looks forward to building on annual sales now surpassing 750-billion yen (US$6.8 billion) and to contributing to a better future for people everywhere.
Find out more about Toshiba Electronic Devices & Storage Corporation at

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Toshiba Electronic Devices & Storage Corporation
Digital Marketing Department
Chiaki Nagasawa

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