HCPL-6551 [Hewlett Packard]

These are single, dual, and quad channel hermetically sealed optocouplers designed for analog and digital applications. They operate over the full military temperature range (-55°C to +125°C) and are available as standard products or with MIL-PRF-38534 Class H or K testing. Key features include high speed (typically 400kBit/s), 9 MHz bandwidth, open collector output, 2-18V supply voltage, 1500Vdc withstand test voltage, and high radiation immunity. They are suitable for harsh industrial environments and provide isolated input/output lines.