MAX7320AEE+ datasheet(3/14 Pages) MAXIM

Part #	MAX7320AEE+

Description	I2C Port Expander with Eight Push-Pull Outputs

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Manufacturer	MAXIM [Maxim Integrated Products]

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(V+ = +1.71V to +5.5V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at V+ = +3.3V, TA = +25°C.) (Note 1)

Note 1: All parameters tested at TA = +25°C. Specifications over temperature are guaranteed by design.

Note 2: Guaranteed by design.

Note 3: A master device must provide a hold time of at least 300ns for the SDA signal (referred to VIL of the SCL signal) to bridge

the undefined region of SCL’s falling edge.

Note 4: Cb = total capacitance of one bus line in pF. tR and tF measured between 0.3 x V+ and 0.7 x V+, ISINK ≤ 6mA.

Note 5: Input filters on the SDA and SCL inputs suppress noise spikes less than 50ns.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Port Output Data Valid

tPPV

CL ≤ 100pF

4

µs

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Serial Clock Frequency

fSCL

400

kHz

Bus Free Time Between a STOP

and a START Condition

tBUF

1.3

µs

Hold Time (Repeated) START

Condition

tHD, STA

0.6

µs

Repeated START Condition Setup

Time

tSU, STA

0.6

µs

STOP Condition Setup Time

tSU, STO

0.6

µs

Data Hold Time

tHD, DAT (Note 3)

0.9

µs

Data Setup Time

tSU, DAT

100

ns

SCL Low to Data Out Valid

tVD, DAT SCL low to SDA output valid

3.4

µs

SCL Clock Low Period

tLOW

1.3

µs

SCL Clock High Period

tHIGH

0.7

µs

Rise Time of Both SDA and SCL

Signals, Receiving

tR

(Notes 2, 4)

20 +

0.1Cb

300

ns

Fall Time of Both SDA and SCL

Signals, Receiving

tF

(Notes 2, 4)

20 +

0.1Cb

300

ns

Fall Time of SDA Transmitting

tF,TX

(Notes 2, 4)

20 +

0.1Cb

250

ns

Pulse Width of Spike Suppressed

tSP

(Note 5)

50

ns

Capacitive Load for Each

Bus Line

Cb

(Note 2)

400

pF

RST Pulse Width

tW

500

ns

RST Rising to START Condition

Setup Time

tRST

1

µs

MAX7320

I2C Port Expander with Eight Push-Pull Outputs

www.maximintegrated.com

Maxim Integrated │ 3

Port And Timing Characteristics

Timing Characteristics

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