DS1877T+T&R

The DS1877T+T&R is a SFP controller for dual Rx interface in 28 pin TQFN package. The device controls and monitors all functions for SFF, SFP and SFP+ modules including all SFF-8472 functionality. It supports all LOS functions for two receivers and continually monitors for LOS of either channel. Four ADC channels monitor VCC, temperature and two differential external monitor inputs that can be used to meet all monitoring requirements. Two digital to analogue converter (DAC) outputs with temperature indexed lookup tables (LUTs) are available for additional monitoring and control functionality. Flexible and two level password scheme provides three levels of security.

• Eases design of low cost media converters and optical video modules
• Four analogue monitor channels (temperature, VCC, RSSI1, RSSI2)
• Operating voltage range from 2.85V to 3.9V and supply current of 2.5mA
• Comprehensive loss-of-signal (LOS) detection system
• 120bytes of password-1 protected memory
• 128bytes of password-2 protected memory in main device address
• Digital I/O pins (four inputs, four outputs) and I2C compatible interface
• Operating temperature range from -40°C to +95°C

Poznámky

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