Datasheet

2 Maxim Integrated
SFP Controller for Dual Rx Interface
DS1877
TABLE OF CONTENTS
Absolute Maximum Ratings ...................................................................... 5
Recommended Operating Conditions
.............................................................. 5
DC Electrical Characteristics
..................................................................... 5
DAC1, DAC2 Electrical Characteristics
............................................................. 6
Analog Voltage Monitoring Characteristics
.......................................................... 6
AC Electrical Characteristics
..................................................................... 6
Analog Quick-Trip Characteristics
................................................................. 7
Quick-Trip Timing Characteristics
.................................................................. 7
Digital Thermometer Characteristics
............................................................... 7
I
2
C AC Electrical Characteristics .................................................................. 7
Nonvolatile Memory Characteristics
................................................................ 8
Typical Operating Characteristics
................................................................. 9
Pin Configuration
............................................................................. 10
Pin Description
............................................................................... 10
Block Diagram
............................................................................... 11
Typical Operating Circuit
....................................................................... 12
Detailed Description
........................................................................... 13
DACs During Power-Up
......................................................................13
Quick-Trip Timing
...........................................................................13
Monitors and Fault Detection
..................................................................14
Monitors
................................................................................14
Two Quick-Trip Monitors and Alarms
..........................................................14
Four ADC Monitors and Alarms
..............................................................14
ADC Timing
.............................................................................14
Right-Shifting ADC Result
..................................................................14
Differential RSSI1/RSSI2 Inputs
..............................................................15
Enhanced RSSI Monitoring (Dual-Range Functionality)
...........................................15
Crossover Enabled
........................................................................16
Crossover Disabled
.......................................................................16
Low-Voltage Operation
.......................................................................16
Delta-Sigma Outputs
.........................................................................18
Digital I/O Pins
..............................................................................19
LOS1, LOS2, and LOSOUT
.................................................................19
INX, RSEL, OUTX, RSELOUT
...............................................................19
FAULT Output
............................................................................20
Die Identification
............................................................................20