Key Features

• Meets All SFF-8472 Control and Monitoring Requirements
• Four Analog Monitor Channels: Temperature, VCC, RSSI1, RSSI2
  • RSSI1 and RSSI2 Support Internal and External Calibration
  • Differential Input
  • Common-Mode Range from GND to VCC
  • Scalable Dynamic Range
  • Internal Direct-to-Digital Temperature Sensor
  • Alarm and Warning Flags for All Monitored Channels
• Two 10-Bit Delta-Sigma Outputs
• Each Controlled by 72-Entry Temperature LUT
• Digital I/O Pins: Four Inputs, Four Outputs
• Comprehensive Loss-of-Signal (LOS) Detection System
• Flexible, Two-Level Password Scheme Provides Three Levels of Security
• 120 Bytes of Password-1 Protected Memory
• 128 Bytes of Password-2 Protected Memory in Main Device Address
• 256 Additional Bytes Located at A0h Slave Address
• Receiver 1 is Accessed at A2h Slave Address
• Receiver 2 is Accessed at B2h Slave Address
• I²C-Compatible Interface
• +2.85V to +3.9V Operating Voltage Range
• -40°C to +95°C Operating Temperature Range
• 28-Pin TQFN (5mm x 5mm x 0.75mm) Package

DS1877: Typical Operating Circuit

Applications/Uses

• Dual Rx Video SFPs
• SFF, SFP, and SFP+ Transceiver Modules