ایزولاتور ایزولاتور دیجیتال

Product Attributes

Introduction

High-performance quad-channel digital isolators providing complete electrical isolation between input and output. The logic input and output buffers of each isolation channel are separated by dual-capacitor silicon dioxide (SiO₂) insulating barriers. All four data channels are fully independent, encoding input data and restoring it without distortion at the receiver. The BL7140 features four unidirectional channels (all in the same direction) with output enable on the output side; the BL7141 features three forward channels and one reverse channel with output enable on both sides; the BL7142 features two forward channels and two reverse channels with output enable on both sides. If power or signal is lost on the input side, devices with suffix L default to a low output level, while devices with suffix H default to a high output level. These devices offer high isolation capability, delivering high electromagnetic immunity and low emissions at low power consumption, helping to prevent noise and surges on data buses or other circuits from reaching the local ground and interfering with or damaging sensitive circuits. High CMTI capability ensures correct transmission of digital signals. Available in 16-pin wide-body SOIC (W) and 16-pin SSOP (S) packages.

Features

• 100Mbps signal transmission rate
• Robust isolation performance
• ±100kV/µs CMTI (typical)
• 5kV RMS isolation voltage

• 50-year isolation barrier lifetime

• Up to 13kV surge withstand capability
• Wide supply voltage range: 2.5V to 5.5V
• 2.5V to 5.5V level translation
• Wide temperature range: -40℃ to 125℃
• Default output high (H) and low (L) options
• Low propagation delay: 11ns (typical, 5V supply)
• Low pulse width distortion: 3ns

Applications

• Industrial automation
• Motor control
• Photovoltaic inverters
• Isolated power supplies
• Medical devices