Rainbow Electronics MAX1989 - Manual (Page 3)

MAX1668/MAX1805/MAX1989
†
Multichannel Remote/Local
Temperature Sensors
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ELECTRICAL CHARACTERISTICS (continued)
(V CC = +3.3V, STBY = V
CC
, configuration byte = X0XXXX00, T A = 0°C to +125°C, unless otherwise noted.)
STBY, SMBCLK, SMBDATA; V
CC = 3V to 5.5V
t HIGH , 90% to 90% points
t LOW , 10% to 10% points
(Note 4)
SMBCLK, SMBDATA
Logic inputs forced to V CC or GND
ALERT forced to 5.5V
STBY, SMBCLK, SMBDATA; V
CC = 3V to 5.5V
ALERT, SMBDATA forced to 0.4V
CONDITIONS
µs 4 SMBCLK Clock High Time
µs 4.7 SMBCLK Clock Low Time
kHz DC 100 SMBus Clock Frequency
pF 5 SMBus Input Capacitance
µA -1 +1 Logic Input Current
µA 1
ALERT Output High Leakage
Current
V 2.2 Logic Input High Voltage
V 0.8 Logic Input Low Voltage
mA 6 Logic Output Low Sink Current
UNITS MIN TYP MAX PARAMETER
t SU:DAT , 10% or 90% of SMBDATA to 10% of SMBCLK
t SU:STO , 90% of SMBCLK to 10% of SMBDATA
t HD:STA , 10% of SMBDATA to 90% of SMBCLK
t SU:STA , 90% to 90% points
ns 250
SMBus Data Valid to SMBCLK
Rising-Edge Time
µs 4 SMBus Stop-Condition Setup Time
µs 4 SMBus Start-Condition Hold Time
ns 250
SMBus Repeated Start-Condition
Setup Time
µs 4.7 SMBus Start-Condition Setup Time
ns SMBus Data-Hold Time
Master clocking in data µs 1
SMBCLK Falling Edge to SMBus
Data-Valid Time
SMBus INTERFACE
ELECTRICAL CHARACTERISTICS
(V CC = +5V, STBY = V CC , configuration byte = X0XXXX00, T A = -55°C to +125°C, unless otherwise noted.) (Note 6)
CONDITIONS
Monotonicity guaranteed
T A = +60°C to +100°C
Bits 8 Temperature Resolution
-2 +2
T R = +60°C to +100°C
T A = -55°C to +125°C
°C
-3 +3
Initial Temperature Error,
Local Diode (Note 2)
V 4.5 5.5 Supply-Voltage Range
From stop bit to conversion complete (both channels) ms 260 380 Conversion Time
-3 +3
T R = -55°C to +125°C
°C
UNITS MIN TYP MAX
-5 +5
PARAMETER
Temperature Error, Remote Diode
(Notes 2, 3)
ADC AND POWER SUPPLY
t HD:DAT , slave receive (Note 5) 0