Rainbow-electronics MAX6692 Manual de usuario descargar pdf (Pagina 3)

MAX6648/MAX6692

Precision SMBus-Compatible Remote/Local

Temperature Sensors with Overtemperature Alarms

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

= 3.0V to 5.5V, T

= -55°C to +125°C, unless otherwise specified. Typical values are at V

= 3.3V and T

= +85°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

ALERT, OVERT

SINK

= 1mA 0.4

Output Low Voltage

SINK

= 4mA 0.6

Output High Leakage Current V

= 5.5V 1 µA

SMBus-COMPATIBLE INTERFACE (SCLK AND SDA)

Logic Input Low Voltage V

0.8 V

= 3.0V 2.2

Logic Input High Voltage V

= 5.5V 2.6

Input Leakage Current I

LEAK

= GND or V

-1 +1 µA

Output Low-Sink Current I

SINK

= 0.6V 6 mA

Input Capacitance C

5pF

SMBus-COMPATIBLE TIMING (Note 2)

Serial Clock Frequency f

SCLK

(Note 3) 100 kHz

Bus Free Time Between STOP

and START Condition

BUF

4.7 µs

START Condition Setup Time 4.7 µs

Repeat START Condition Setup

Time

SU:STA

90% to 90% 50 ns

START Condition Hold Time

HD:STA

10% of SDA to 90% of SCLK 4 µs

STOP Condition Setup Time

SU:STO

90% of SCLK to 90% of SDA 4 µs

Clock Low Period t

LOW

10% to 10% 4.7 µs

Clock High Period t

HIGH

90% to 90% 4 µs

Data Setup Time

HD:DAT

(Note 4) 250 µs

Receive SCLK/SDA Rise Time t

1µs

Receive SCLK/SDA Fall Time t

300 ns

Pulse Width of Spike Suppressed

050ns

SMBus Timeout

TIMEOUT

SDA low period for interface reset 25 37 45 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 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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Rainbow-electronics MAX6692 Manual de usuario Pagina 3

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