DS75U Datasheet, PDF (5/14 Pages) Maxim Integrated Products – Digital Thermometer and Thermostat

AC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL CONDITION
Resolution
Temperature
Conversion Time
t_CONVT
9-bit
conversions
10-bit
conversions
11-bit
conversions
12-bit
conversions
SCL Frequency
f_SCL
Bus Free Time
t_BUF
Between a STOP and
START Condition
START and Repeated
START Hold Time
from Falling SCL
t_HD:STA
Low Period of SCL
High Period of SCL
Repeated START
Condition Setup Time
to Rising SCL
t_LOW
t_HIGH
t_SU:STA
Data-Out Hold Time
from Falling SCL
t_HD:DAT
Data-In Setup Time to t_SU:DAT
Rising SCL
Rise Time of SDA and
t_R
SCL
Fall Time of SDA and
t_F
SCL
STOP Setup Time to t_SU:STO
Rising SCL
Capacitive Load for
C_B
Each Bus Line
Input Capacitance
C_I
DS75
(-55°C to +125°C; 2.7V ≤ V_DD ≤ 5.5V)
MIN TYP MAX UNITS NOTES
9
12
bits
150
ms
300
600
1200
400 KHz
1.3
μs
5
0.6
μs
5, 6
1.3
μs
5
0.6
μs
5
0.6
μs
5
0
0.9
μs
5
100
ns
5
20 + 0.1C_B
20 + 0.1C_B
ns
5, 7
1000
300
ns
5, 7
0.6
μs
5
400
pF
5
pF
NOTES:
1. All voltages are referenced to ground.
2. Internal heating caused by O.S. loading will cause the DS75 to read approximately 0.5°C higher if
O.S. is sinking the max rated current.
3. I_DD specified with O.S. pin open.
4. I_DD specified with V_DD at 5.0V and SDA, SCL = 5.0V, 0°C to 70°C.
5. See Timing Diagram in Figure 2. All timing is referenced to 0.9 x V_DD and 0.1 x V_DD.
6. After this period, the first clock pulse is generated.
7. For example, if C_B = 300pF, then t_R[min] = t_F[min] = 50ns.
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