Corebai Microelectronics has overcome technical bottlenecks by launching the CBMuD1400/CBMuD1401/CBMuD1402 series of four-channel digital isolators. Leveraging high-speed CMOS and single-chip air-core transformer technology, these devices eliminate optocoupler structures, delivering a new isolation solution with low power consumption, high reliability, and easy design for industrial and automotive applications—delivering a revolutionary upgrade to digital signal transmission performance.

Overcome the pain points of optocouplers and embrace core advantages:

The "disruptive" low-power design consumes only 1/10 to 1/6 of the power required by traditional optocouplers, significantly reducing system energy consumption and thermal stress. With outstanding performance—exhibiting a mere 1.0 mA (typical value) at 5V supply and 0–2 Mbps rates—or an even lower power consumption of just 0.7 mA at 3V, it makes this module an ideal choice for battery-powered or low-power industrial control applications.

Industrial-grade anti-interference and reliability: Designed to withstand severe electromagnetic interference in industrial environments, the product delivers common-mode transient immunity exceeding 25 kV/μs (up to 35 kV/μs), ensuring stable signal transmission without frame loss. Its electrical isolation meets 1131 Vpeak basic insulation and 560 Vpeak enhanced insulation standards, complying with stringent safety regulations. Additionally, it features an integrated signal refresh mechanism that prevents output bit errors during prolonged input stability, guaranteeing consistent system logic.

Unaffected by extreme environments: Operating temperatures range from-40°C to +105°C, with short-term tolerance for up to 125°C. Perfectly suited for the demanding conditions of industrial automation and automotive electronics, ensuring stable and stress-free performance.

Flexible adaptation and simplified design: Supports a wide voltage supply range of 2.7V to 5.5V, with native bidirectional level conversion between 3V and 5V systems eliminating the need for additional circuits, thereby directly reducing BOM costs and PCB layout complexity. Three data rate modes (Mode A: 1 Mbps; Mode B: 10 Mbps; Mode C: 90 Mbps) meet all application requirements, featuring a propagation delay as low as 34 ns and pulse width distortion of only 0.5 ns, precisely fulfilling high-speed signal transmission demands such as SPI interfaces.

Precise positioning, flexible model selection

The three models share the same platform and feature fixed orientation configurations. To meet diverse system requirements, each model boasts unique characteristics:

CBMuD1400: Features a 4/0-channel configuration with Pin 7 as the NC (open) pin. Based on a fundamental architecture, it offers outstanding cost-effectiveness and is suitable for general-purpose unidirectional digital isolation applications.

CBMuD1401: Features a 3/1 channel direction configuration with no NC idle pins, optimized pin resource allocation and channel layout, compact functional pin arrangement, compatibility with standardized hardware designs, and enhanced versatility.

CBMuD1402: Features VE1 independent output enablement and VE2 total output enablement, supporting independent control of single-channel outputs for complex systems requiring time-sharing switching and flexible output management.

All VE2 models feature total output enable, with high-level activation and low-level high impedance. In noisy environments, stable control can be achieved through external logic levels.

Empower diverse scenarios and unleash the value of design

From industrial fieldbus (RS-485/RS-422) to automotive sensor signal isolation, from motor drive protection to high-speed data converter isolation, the CBMuD14xx series delivers exceptional performance for critical applications. Whether for industrial automation equipment requiring high immunity to interference or for automotive electronic systems demanding extreme stability and low power consumption, it provides reliable protection. Additionally, its built-in output enablement function and streamlined WSOP-16 packaging design further simplify hardware development and accelerate product deployment.