The π121U31 is a compact, dual‑channel digital isolator IC designed to provide safe and reliable signal isolation between circuits — ideal for electronics projects, industrial automation, power‑supply designs, and any application needing galvanic isolation between signal domains.

Specifications:

• Model: π121U31
• Channels: 2 (dual‑channel)
• Package: SOIC‑8 (8‑pin surface‑mount IC)
• Supply Voltage: 3.0 – 5.5 V
• Isolation Voltage: 3000 Vrms
• Data Rate (Max): 150 kbps
• Common‑Mode Transient Immunity (CMTI): 150 kV/µs
• Operating Temperature Range: –40 °C to +125 °C

Features:

• Dual‑channel isolation for simultaneous bidirectional signal isolation.
• High isolation voltage (3000 Vrms) — provides strong electrical separation between input and output circuits.
• Works over the common low-voltage logic range (3–5.5 V), making it flexible for microcontrollers, sensors, and logic‑level circuits.
• High common‑mode transient immunity — helps maintain signal integrity in noisy or high-voltage environments (e.g. motor control, power supply circuits).
• Compact SOIC‑8 package — suitable for space-constrained PCBs and modern electronics builds.

Typical Use Cases:

• Isolating control logic from high-voltage or noisy power circuits (e.g. motor drives, power supplies).
• Protecting microcontrollers or sensitive electronics from ground loops and potential hazards.
• Signal interfacing between systems with different ground references.
• Industrial automation, IoT devices, and embedded electronics where safety and signal integrity matter.

Data Sheet: