Toshiba Releases 2-Channel Automotive Standard Digital Isolators Compliant with AEC-Q100
June 19, 2025
Toshiba Electronic Devices & Storage Corporation
KAWASAKI, Japan—Toshiba Electronic Devices & Storage Corporation ("Toshiba") has launched a line of 2-channel high-speed standard digital isolators for automotive applications. The new "DCM32xx00 Series” features four devices that support stable operation with high common-mode transient immunity (CMTI) of 100kV/μs (typ.)[1] and high data transmission rate of 50Mbps (max)[2]. All conform to the AEC-Q100 standard for the safety and reliability of automotive electronic components. Shipments start today.
The safety and reliability of on-board chargers (OBC) and battery management systems (BMS) in hybrid-electric vehicles (HEV) and electric vehicles (EV) require devices that ensure isolation and prevent noise-propagation. Automotive standard digital isolators provide solutions for the multi-channel high-speed communications and high CMTI these isolation devices require.
The new isolators use Toshiba's proprietary magnetic coupling type isolated transmission method to achieve a high CMTI of 100kV/μs (typ.). This delivers high level resistance to electric noise between input and output in isolated signal transmission, enables stable control signal transmission and contributes to stable equipment operation. A low-pulse-width distortion of 0.8ns (typ.)[2] and a data-transmission rate of 50Mbps (max)[2] are also achieved. The new products are suitable for 2-channel high-speed communication applications such as I/O interfaces with CAN[3] communications.
Toshiba already mass produces 4-channel automotive standard digital isolators, and has now extended its product lineup to 2-channel small SOIC8-N packages. Going forward, the company will expand its range of channels and packages for automotive and industrial equipment. It will continue to provide high-quality isolation devices and photocouplers that support the reliability and real-time data transmission required by automotive equipment.
Notes:
[1] Test conditions: VDD1=VDD2=4.5 to 5.5V, VCM=1500V, Topr=-40 to 125°C
[2] Test conditions: VDD1=VDD2=4.5 to 5.5V, Topr=-40 to 125°C
[3] CAN (Controller Area Network): A serial communications standard, primarily used for automotive communication networks.
Applications
Automotive equipment
- Battery management system (BMS)
- Automotive on-board charger (OBC)
- Inverter control
Features
- High common mode transient immunity: CMTI=100kV/μs (typ.)[1]
- High-speed data rate: tbps=50Mbps (max)[2]
- Low pulse width distortion: PWD=0.8ns (typ.)[2]
- 2-channel support (see Main Specifications for details on each device):
One forward channel and one reverse channel; Two forward channels and no reverse channel
Main Specifications
(Unless otherwise specified, Topr=-40 to 125°C)
| Part number | DCM321C00 | DCM321D00 | DCM320C00 | DCM320D00 | ||||
|---|---|---|---|---|---|---|---|---|
| Number of channels (Forward directions : reverse directions) |
2 (1:1) |
2 (2:0) |
||||||
| Default Output | Low | High | Low | High | ||||
| Input/Output Control | None | |||||||
| Package | SOIC8-N | |||||||
| Absolute Maximum Ratings |
Operation temperature range Topr (°C) | -40 to 125 | ||||||
| Storage temperature range Tstg (°C) | -65 to 150 | |||||||
| Isolation voltage BVS (Vrms) |
t=1min, Ta=25°C |
Min | 3000 | |||||
| Electrical Characteristics |
Common- Mode Transient Immunity CMTI (kV/μs) |
VDD1=VDD2= 4.5 to 5.5V, VCM=1500V |
Typ. | 100 | ||||
| Data Rate tbps (Mbps) |
VDD1=VDD2= 4.5 to 5.5V |
Max | 50 | |||||
| Pulse Width Distortion PWD (ns) |
Typ. | 0.8 | ||||||
| Propagation Delay tPHL, tPLH (ns) |
10.9 | |||||||
| Sample Check & Availability |  |
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Related information
Application Notes
- Basics of the standard digital isolators (PDF: 968KB)
- Digital Isolator EMC Application Notes (PDF: 3.3MB)
- Glossary of Standard Digital Isolator terms (PDF: 528KB)
Follow the link below for more on Toshiba’s standard digital isolators.
Standard Digital Isolators
To check availability of the new products at online distributors, visit:
DCM321C00
DCM321D00
DCM320C00
DCM320D00
Customer Inquiries:
Optoelectronic Device Sales & Marketing Dept.
Tel: +81-44-548-2218
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* 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.