LTC4302CMS-2 datasheet(3/20 Pages) LINER

3 / 20 page

LTC4302-1/LTC4302-2

sn430212 430212fs

ELECTRICAL CHARACTERISTICS

The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.

VCC = 2.7V to 5.5V (LTC4302-1), VCC = VCC2 = 2.7V to 5.5V (LTC4302-2) unless otherwise noted.

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: The ICC tests are performed with the backplane-to-card connection

circuitry activated.

Note 3: When the GPIOs are in open-drain output or input mode, the logic

high voltage can be provided by a pull-up supply voltage ranging from

2.2V to 5.5V, independent of the VCC voltage.

Note 4: IPULLUP,AC varies with temperature and VCC voltage as shown in

the Typical Performance Characteristics section.

Note 5: The connection circuitry always regulates its output to a higher

voltage than its input. The magnitude of this offset voltage as a function of

the pull-up resistor and V

CC voltage is shown in the Typical Performance

Characteristics section.

Note 6: The specifications in this section illustrate the LTC4302-1/

LTC4302-2’s compatibility with the I2C Fast Mode, the I2C Standard Mode

and SMBus specifications. See the Timing Diagram on page 5 for

illustrations of the timing parameters.

Note 7: CB = total capacitance of one bus line in pF.

Note 8: The digital interface circuit controls the data fall time only when

acknowledging or transmitting zeros during a read operation. The input-

output connection data and clock outputs meet the fall time specification

provided that the corresponding inputs meet the fall time specification.

Note 9: Guaranteed by design. Not subject to test.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

General Purpose I/Os

VLOW

I/O Logic Low Voltage

ISINK = 10mA, VCC = 2.7V

0.36

0.8

VHIGH

I/O Logic High Voltage

ISOURCE = 200µA, VCC = 2.7V

2.4

ILEAK

I/O Leakage Current

VI/O = 0V to 5.5V (Note 3)

±5

µA

VTHRESH

Input Threshold Voltage

Input Mode

0.8

1.5

2.2

Rise Time Accelerators

IPULLUP,AC Transient Boosted Pull-Up Current

Positive Transition on SDA, SCL,

Slew Rate = 0.8V/

µs, VCC = 2.7V (Note 4)

Input-Output Connection

VOS

Output-Input Offset Voltage

10k to VCC on SDA, SCL Pins (Note 5),

100

175

CIN

Digital Input Capacitance

(Note 9)

VOL

Output Low Voltage

SDA, SCL Pins, ISINK = 3mA

0.4

ILEAK

Input Leakage Current

SDA, SCL Pins, VCC = 0V to 5.5V

±5

µA

Connection Circuits Inactive

2-Wire Digital Interface Voltage Characteristics

VLTH

Logic Threshold Voltage

0.3VCC 0.5VCC 0.7VCC

ILEAK

Digital Input Leakage

VCC = 0V to 5.5V

±5

µA

VOL

Digital Output Low Voltage

IPULLUP = 3mA Into SDAIN Pin

0.4

2-Wire Digital Interface Timing Characteristics (Note 6)

fI2C,MAX

I2C Operating Frequency

(Note 9)

400

600

kHz

tBUF

Bus Free Time Between Stop and Start

(Note 9)

0.75

1.3

µs

Condition

tHD,STA

Hold Time After (Repeated) Start Condition

(Note 9)

100

tSU,STA

Repeated Start Condition Setup Time

(Note 9)

–30

tSU,STO

Stop Condition Setup Time

(Note 9)

–30

tHD,DATI

Data Hold Time Input

(Note 9)

–25

tHD,DATO

Data Hold Time Output

300

600

900

tSU,DAT

Data Setup Time

(Note 9)

100

tSP

Pulse Width of Spikes Suppressed by

(Note 9)

150

250

the Input Filter

Data Fall Time

(Notes 7, 8, 9)

20 +

300

0.1CB

LTC4302CMS-2 Datasheet(PDF) 3 Page - Linear Technology

LTC4302CMS-2 Datasheet(HTML) 3 Page - Linear Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Datasheet Download

Link URL