MAX6642_09 Datasheet, PDF (3/14 Pages) Maxim Integrated Products – ±1°C, SMBus-Compatible Remote/Local Temperature Sensor with Overtemperature Alarm

±1°C, SMBus-Compatible Remote/Local
Temperature Sensor with Overtemperature Alarm
ELECTRICAL CHARACTERISTICS (continued)
(V_CC = +3.0V to +5.5V, T_A = -40°C to +125°C, unless otherwise specified. Typical values are at V_CC = +3.3V and T_A = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
SMBus-COMPATIBLE INTERFACE (SCLK and SDA)
Logic Input Low Voltage
V_IL
Logic Input High Voltage
Input Leakage Current
V_IH
I_LEAK
V_CC = 3.0V
V_IN = GND or 5.5V
Output Low Sink Current
Input Capacitance
I_OL
V_OL = 0.6V
C_IN
SMBus TIMING (Note 2)
Serial Clock Frequency
f_SCLK (Note 3)
Bus Free Time Between STOP
and START Condition
t_BUF
MIN TYP MAX UNITS
0.8
V
2.2
V
-1
+1
µA
6
mA
5
pF
100
kHz
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
STOP Condition Setup Time
Clock Low Period
Clock High Period
Data Setup Time
Receive SCLK/SDA Rise Time
Receive SCLK/SDA Fall Time
Pulse Width of Spike Suppressed
SMBus Timeout
t_HD:STA
t_SU:STO
t_LOW
t_HIGH
t_HD:DAT
t_R
t_F
t_SP
t_TIMEOUT
10% of SDA to 90% of SCLK
90% of SCLK to 90% of SDA
10% to 10%
90% to 90%
(Note 4)
SDA low period for interface reset
4
µs
4
µs
4.7
µs
4
µs
250
µs
1
µs
300
ns
0
50
ns
20
28
40
ms
Note 1: All parameters tested at T_A = +25°C. Specifications over temperature are guaranteed by design.
Note 2: Timing specifications guaranteed by design.
Note 3: The serial interface resets when SCLK is low for more than t_TIMEOUT.
Note 4: A transition must internally provide at least a hold time to bridge the undefined region (300ns max) of SCLK’s falling edge.
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