IC-Mart Your Trusted Source for Digital Isolators Chips

(from leading manufacturers)

Top Digital Isolator Manufacturers

1. Texas Instruments (TI)

TI uses SiO2​ capacitive isolation. Their chips are known for high reliability and performance.

• Standard/High-Performance:
  • ISO77xx Series: Industry standard (e.g., ISO7741, ISO7721). Often used to replace old optocouplers.
  • ISO78xx Series: Reinforced isolation (e.g., ISO7841) with surge protection up to 12.8 kV.
• Ultra-Low Power:
  • ISO70xx Series: Built for battery-powered devices (e.g., ISO7041) with minimal static power consumption.
• Integrated Power (Signal + Power):
  • ISOW78xx / ISOW14xx Series: These include built-in DC-DC converters (e.g., ISOW7841). No external power module needed.
• Integrated Interfaces:
  • ISO154x Series: Bidirectional I2C isolation.
  • ISO14xx Series: Isolated RS-485 transceivers.

2. Analog Devices (ADI)

ADI uses patented iCoupler® magnetic technology (micro-transformers). They excel in low latency and signal synchronization.

• iCoupler Standard Isolation:
  • ADuM1xxx / ADuM2xxx Series: The industry benchmark (e.g., ADuM140E, ADuM1201).
  • ADuM3xxx / ADuM4xxx Series: Reinforced isolation for high-voltage use.
• isoPower (Integrated Power):
  • ADuM5xxx / ADuM6xxx Series: Signal and power isolation in one package (e.g., ADuM5401).
• Specialized Isolation:
  • ADM248x / ADM305x Series: Isolated RS-485 and CAN transceivers.
  • ADuM4160: Leading USB isolation solution.

3. Skyworks Solutions (Formerly Silicon Labs)

Uses capacitive coupling. Known for high channel density and excellent CMTI (Common Mode Transient Immunity).

• Mainstream Series:
  • Si86xx Series: Cost-effective 1-6 channel isolators (e.g., Si8641).
  • Si86Px Series (2026 New): Integrated power series for compact designs.
• Isolated Drivers:
  • Si82xx Series: Isolated gate drivers for inverters and power supplies.
• PLC / Digital Input:
  • Si83xx Series: Built for 24V digital inputs in industrial PLCs.

5. Other Key Suppliers

Manufacturer	Core Tech	Typical Models	Key Applications
Infineon	Coreless Transformer	ISOFACE™ 2DIB	Industrial control; highly robust.
Broadcom	Opto-Magnetic	ACPL-Mxxx / ACNW	High-speed communication.
NVE Corp	GMR (Giant Magnetoresistance)	IL7xx Series	Ultra-fast; high-frequency pulse.

Mainstream Chinese Domestic Manufacturers

Manufacturer	Core Advantage	Recommended Alternatives	Target Sectors
Novosense	Automotive grade, full lineup	NSi82xx (vs. ISO77xx)	EV, Solar, ESS
2Pai Semi	High speed, ultra-low power	π1xxx / π2xxx	Industrial, Servers
3PEAK	High stability, automotive	TPT77xx	Smart meters, Industrial
Chipanalog	Interface specialists	CA-IS37xx / CA-IS30xx	Industrial bus, Medical
Mornsun	High integration (Power+Signal)	TDA51S	Power measurement, BMS

• Sillumin (数明): Strong in isolated gate drivers (SiLM572x) and high-density chips (SiLM576x).
• SIT (芯力特): Focuses on specialized isolated CAN transceivers (SIT1076).

---

Digital Isolators Typical Application Scenarios

1. Electric Vehicles (EV/HEV): * BMS: Protects low-voltage processors from 400V–800V battery packs.
   • OBC: Isolates AC mains from the vehicle’s low-voltage system.
2. Industrial Automation: * PLC: Isolates sensor inputs to prevent ground loop interference.
   • Servo Drives: Protects control logic from high-voltage PWM signals.
3. Solar & Energy Storage (PV & ESS): * Used in inverters to isolate control logic from power stages.
4. Communication Interfaces: * Protects servers and gateways in RS-485, CAN, or I2C long-distance setups.
5. Medical Electronics: * Ensures patient monitors are physically isolated from the power grid for safety.

Digital Isolator Classification

1. By Physical Technology

Category	Technical Features	Typical Manufacturers	Models
Capacitive	SiO2​ dielectric; low power, high speed.	TI, Skyworks	ISO7741, Si8641
Magnetic	Micro-transformers; low latency, high noise immunity.	ADI, Infineon	ADuM140E, ISOFACE
GMR	Magnetoresistance changes; built for ultra-high speed.	NVE Corporation	IL710, IL711

2. By Integration Level

Category	Logical Function	Manufacturers	Models
Basic Signal	Isolates 1-8 logic channels (TTL/CMOS).	TI, ADI	ISO7721, ADuM141
Integrated Power	Built-in 3.3V/5V isolated DC-DC converter.	ADI, TI	ADuM5401, ISOW7841
Interface Transceiver	Combines isolator with PHY (RS-485/CAN).	ADI, TI	ADM2484E, ISO1410
Gate Drivers	High-current output for MOSFET/IGBT.	Infineon, Skyworks	EiceDRIVER, Si8234

3. By Performance & Grade

Category	Requirement	Manufacturers	Models
Reinforced	Double isolation for high-voltage safety (5.7 kVrms).	TI, ADI	ISO7842, ADuM240D
Automotive	AEC-Q100 certified; −40 to +125∘C range.	TI, Skyworks	ISO7741-Q1, Si86xxT
High Speed	Designed for signals above 150 Mbps.	Broadcom, TI	ACNW261L, ISO7041