Rainbow Electronics MAX6656 - Manual (Page 3)

MAX6655/MAX6656
Dual Remote/Local Temperature Sensors and
Four-Channel Voltage Monitors
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ELECTRICAL CHARACTERISTICS (continued)
(V CC = +3.0V to +3.6V for MAX6656, V CC = +4.5V to +5.5V for MAX6655, T A = -55°C to +125°C, unless otherwise noted. Typical values
are at V CC = +3.3V for MAX6656, V CC = +5.0V for MAX6655, T A = +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
High level 80 100 140 Remote Junction Current
(DXP, DXN)
Low level 8 10 14
µA
SMBus INTERFACE (SMBCLK, SMBDATA, STBY)
Logic Input Low Voltage V IL V CC = +3.0V to +5.5V 0.8 V
V CC = +3.0V 2.1
Logic Input High Voltage V IH
V CC = +5.5V 2.6
V
Input Leakage Current I
LEAK
V
IN
= GND or V
CC
±1 µA
Output Low Sink Current I OL V OL = +0.6V 6 mA
Input Capacitance C IN 5 pF
SMBus Timeout SMBCLK or SMBDATA time low for reset 30 35 60 ms
ALERT, OVERT
Output Low Sink Current
V OL = +0.6V 6 mA
Output High Leakage Current V OH = +5.5V 1 µA
SMBus TIMING
Serial Clock Frequency f SCL 400 kHz
Bus Free Time Between STOP
and START Condition
t BUF 4.7 µs
START Condition Setup Time 4.7 µs
Repeat START Condition Setup
Time
t SU:STA 90% to 90% 50 ns
START Condition Hold Time t HD:STA 10% of SMBDATA to 90% of SMBCLK 4 µs
STOP Condition Setup Time t SU:STO 90% of SMBCLK to 10% of SMBDATA 4 µs
Clock Low Period t LOW 10% to 10% 4.7 µs
Clock High Period t HIGH 90% to 90% 4 µs
Data Setup Time t SU:DAT 90% of SMBDATA to 10% of SMBCLK 250 ns
Data Hold Time t HD:DAT (Note 1) 0 µs
Receive SMBCLK/SMBDATA
Rise Time
t R 1 µs
Receive SMBCLK/SMBDATA
Fall Time
t F 300 ns
Pulse Width of Spike
Suppressed
t SP 0 50 ns