Datasheet > MAX7329

MAX7329

更新时间： 2023-12-20 18:44:50

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亚德诺 - ADI		/
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描述
I2C端口扩展器，带有八个I/O口

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MAX7329 数据手册

MAX7328/MAX7329

I C Port Expanders with Eight I/O Ports

General Description

The MAX7328/MAX7329 are 2-wire serial-interfaced

peripherals with eight I/O ports. Any port can be used as

a logic input or an open-drain output.

Features

● 100kHz, 5.5V-Tolerant, I C-Compatible Serial

Interface

● 2.5V to 5.5V Operating Supply Voltage Range

● Low-Standby-Current Consumption of 10μA (max)

All input ports are continuously monitored for state chang-

es (transition detection). Transitions are alerted through

the open-drain, 5.5V-tolerant INT output.

● I C Bus-to-Parallel-Port Expander

● Open-Drain Interrupt Output INT

● 8-Bit Remote I/O Port for the I C Bus

The MAX7328 and MAX7329 versions differ only by their

slave ID address ranges. The MAX7328 has a slave ID

range of 0100xxx (0x20 to 0x27). The MAX7329 has a

slave ID range of 0111xxx (0x38 to 0x3F).

● Latched Outputs with High-Current-Drive Capability

for Directly Driving LEDs

● Address by Three Hardware Address Pins for Use of

Up to Eight Devices (Up to 16 Using Both MAX7328/

MAX7329)

For a similar part with overvoltage-protected I/Os and a

bus RST input that clears the I C serial interface, refer to

the MAX7321 data sheet. The MAX7328/MAX7329 are

members of a family of pin-compatible port expanders

with a choice of input ports, open-drain I/O ports, and

push-pull output ports (see the Selector Guide).

● Second Sources to PCF8574 and PCF8574A

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

Applications

● RAID

● Servers

● Notebooks

● Industrial

MAX7328AWE

MAX7328AAP

MAX7328AUP*

MAX7329AWE

MAX7329AAP

MAX7329AUP*

-40°C to +125°C

16 Wide SO

20 SSOP

20 TSSOP

16 Wide SO

20 SSOP

Typical Application Circuit

20 TSSOP

*Future product—contact factory for availability.

+2.5V TO +5.5V

Devices are available in both leaded and lead-free packaging.

Specify lead free by adding the + symbol at the end of the part

number when ordering.

47nF

Pin Conﬁgurations

V+

µC

TOP VIEW

SCL

AD0

AD1

AD2

V+

MAX7328

MAX7329

SDA

SCL

SDA

I/O

INT

MAX7328

MAX7329

13 INT

12 P7

AD0

AD1

AD2

GND

WIDE SO

Pin Configurations continued at end of data sheet.

19-3829; Rev 1; 4/14

12 3 4 5 6 7...11

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