Datasheet

MAX1668/MAX1805/MAX1989
†
Multichannel Remote/Local
Temperature Sensors
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Figure 1. MAX1668/MAX1805/MAX1989 Functional Diagram
DXP4
DXP3 DXP2
DXP1
DXN4 DXN3
DXN2
DXN1
LOCAL
CURRENT SOURCES
MUX
DIODE FAULT
ADC
CONTROL
LOGIC
SMBus
ADDRESS DECODER
STBY ADD ADD1
SMBDATA SMBCLK
ALERT
Q
R
S
DIGITAL COMPARATORS
ALERT RESPONSE
CONFIGURATION BYTE
ADDRESS REGISTER
REGISTER
STATUS BYTE REGISTERS
1 AND 2
COMMAND BYTE REGISTER
TEMPERATURE DATA REGISTERS
HIGH LIMITS REGISTERS LOW LIMITS REGISTERS
ALERT MASK
REGISTER
NOTE: DOTTED LINES ARE FOR MAX1668 AND MAX1989.