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MAX6625/MAX6626

9-Bit/12-Bit Temperature Sensors with

C-Compatible Serial Interface in a SOT23

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(+3V ≤ V

≤ +5.5V, T

A =

-55°C to +125°C, unless otherwise noted.)

Note 2: Guaranteed by design and characterization to ±5 sigma.

Note 3: Quantization error not included in specifications for temperature accuracy.

Note 4: Output current should be minimized for best temperature accuracy. Power dissipation within the MAX6625/MAX6626 will

cause self-heating and temperature drift; see Thermal Considerations section.

Note 5: A master device must provide a hold time of at least 300ns for the SDA signal in order to bridge the undefined region of

SCL’s falling edge.

Note 6: C

= total capacitance of one bus line in pF. Tested with C

= 400pF.

Note 7: Input filters on SDA, SCL, and ADD suppress noise spikes less than 50ns.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Input High Leakage Current I

= +5V ±1 µA

Input Low Leakage Current I

= 0 ±1 µA

Input Capacitance C

10 pF

Output Low Voltage V

= 3mA 0.4 V

Output High Current I

= 5V 1 µA

C-COMPATIBLE TIMING

Serial Clock Frequency f

SCL

DC 400 kHz

Bus Free Time Between STOP

and START Conditions

BUF

1.3 µs

START Condition Hold Time t

HD:STA

0.6 µs

STOP Condition Setup Time t

SU:STO

0.6 µs

Clock Low Period t

LOW

1.3 µs

Clock High Period t

HIGH

0.6 µs

Data Setup Time t

SU:DAT

100 ns

Data Hold Time (Note 5) t

HD:DAT

0 0.9 µs

Maximum Receive SCL/SDA

Rise Time (Note 6)

300 ns

Minimum Receive SCL/SDA

Rise Time (Note 6)

20 +

0.1C

Maximum Receive SCL/SDA

Fall Time (Note 6)

300 ns

Minimum Receive SCL/SDA

Fall Time (Note 6)

20 +

0.1C

Transmit SDA Fall Time

(Note 6)

= 400pF, I

= 3mA

20 +

0.1C

250 ns

Pulse Width of Suppressed

Spike (Note 7)

50 ns

Figure 1. Serial Bus Timing

SCL

SDA

LOW

SU:DAT

HD:STA

HD:DAT

SU:STO

BUF

HIGH

1 2 3 4 5 6 7 8 ... 12 13

MAX6625/MAX6626 1

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