Octal SMBus-to-Parallel I/O Expanders

2

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

V+ to GND ................................................................-0.3V to +6V

IO_ to GND .............................................................-0.3V to +30V

IO_ Sink Current..................................................-1mA to +50mA

SMBCLK, SMBDATA, SMBSUS

and ALERT to GND .............................................-0.3V to +6V

ADD_ to GND ...............................................-0.3V to (V+ + 0.3V)

SMBDATA and ALERT Sink Current ...................-1mA to +50mA

16-Pin QSOP (derate 8.3mW/°C above +70°C)...........667mW

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

10°C typical hysteresis

ALERT forced to 5.5V

Static, all IOs low or pulled to 0

ALERT forced to 0.4V

SMBDATA forced to 0.6V

Static, outputs in any combination of on or off

states up to 28V

IO_, SMBSUS, SMBCLK, SMBDATA

IO_, SMBSUS, SMBCLK, SMBDATA

SMBSUS, SMBCLK, SMBDATA (Note 2)

(Note 3)

IO_ forced to 28V

10% or 90% of I/O to 10% of SMBCLK (Note 3)

IO_ to ALERT

IO_, V+ = 4.5V

IO_ forced to 1.0V, V+ = 4.5V

SMBus interface operating,

clock frequency = 100kHz

Falling edge of V+

SMBSUS to IO_

IO_ forced to 0.4V

SMBCLK to IO_

CONDITIONS

°C

140

Thermal Shutdown

µA

1

ALERT Output High Leakage Current

mA

1

ALERT Output Low Sink Current

mA

6

SMBus Output Low Sink Current

V

0.8

Logic Input Low Voltage

V

2.1

Logic Input High Voltage

V

0

5.5

SMBus Logic Input Voltage Range

µs

3

IO_ Data Hold Time

µs

10

IO_ Data Set-Up Time

10

1

µs

2.5

Propagation Delay

3.5

9

µA

718

V

2.7

5.5

Supply Voltage Range

Supply Current (Note 2)

µA

0.5

2

I/O Leakage Current

mA

15

25

50

I/O Current Limit

813

7

V

1.2

1.8

2.5

POR Threshold Voltage

mA

2

I/O Sink Current

UNITS

MIN

TYP

MAX

PARAMETER

SMBCLK, SMBDATA

SMBDATA, SMBCLK, SMBUS, ADD_

ADD_ during address sampling (POR, SPOR,

and RAP) to V+ and GND (Note 4)

pF

5

SMBus Input Capacitance

µA

-1

1

Logic Input Current

k

Ω

20

Sample Address Input Impedance