MAX6647 Просмотр технического описания (PDF) - Maxim Integrated
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производитель
MAX6647
Maxim Integrated
MAX6647 Datasheet PDF : 16 Pages
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+145°C Precision SMBus-Compatible Remote/
Local Sensors with Overtemperature Alarms
ELECTRICAL CHARACTERISTICS (continued)
(VCC = 3.0V to 5.5V, TA = -55°C to +125°C, unless otherwise specified. Typical values are at VCC = 3.3V and TA = +100°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
ALERT, OVERT
Output Low Voltage
ISINK = 1mA
ISINK = 4mA
Output High Leakage Current
VOH = 5.5V
SMBus-COMPATIBLE INTERFACE (SCLK AND SDA)
Logic Input Low Voltage
VIL
Logic Input High Voltage
VIH
VCC = 3.0V
VCC = 5.5V
Input Leakage Current
ILEAK VIN = VGND or VCC
Output Low-Sink Current
ISINK VOL = 0.6V
Input Capacitance
CIN
SMBus-COMPATIBLE TIMING (Note 2)
Serial Clock Frequency
fSCLK (Note 3)
Bus Free Time Between STOP
and START Condition
tBUF
MIN TYP MAX UNITS
0.4
V
0.6
1
μA
0.8
V
2.2
V
2.6
-1
+1
μA
6
mA
5
pF
100
kHz
4.7
μs
Repeat START Condition Setup
Time
tSU:STA
4.7
μs
START Condition Hold Time
STOP Condition Setup Time
Clock Low Period
Clock High Period
Data Setup Time
Data Hold Time
Receive SCLK/SDA Rise Time
Receive SCLK/SDA Fall Time
Pulse Width of Spike
Suppressed
tHD:STA
tSU:STO
tLOW
tHIGH
tSU:DAT
tHD:DAT
tR
tF
tSP
10% of SDA to 90% of SCLK
90% of SCLK to 90% of SDA
10% to 10%
90% to 90%
(Note 4)
4
μs
4
μs
4.7
μs
4
μs
250
ns
250
ns
1
μs
300
ns
0
50
ns
SMBus Timeout
tTIMEOUT SDA low period for interface reset
25
37
55
ms
Note 1: All parameters tested at a single temperature. 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 tTIMEOUT.
Note 4: A transition must internally provide at least a hold time to bridge the undefined region (300ns max) of SCLK’s falling edge.
3
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