Datasheet > MAX7326

MAX7326

更新时间： 2023-12-20 18:45:31

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
18页	959K
描述
I2C端口扩展器，提供12路推挽式输出和4路输入

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数据手册

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MAX7326 数据手册

MAX7326

I²C Port Expander with

12 Push-Pull Outputs and 4 Inputs

sink a total of 100mA and source a total of 50mA from all

12 combined outputs.

Detailed Description

MAX7319–MAX7329 Family Comparison

The MAX7326 is set to two of 32 I C slave addresses

The MAX7324–MAX7327 family consists of four pin-

compatible, 16-port expanders that integrate the

functions of the MAX7320 and one of either the MAX7319,

MAX7321, MAX7322, or MAX7323.

(see Tables 2 and 3) using address inputs AD0 and AD2,

and is accessed over an I C serial interface up to 400kHz.

Eight outputs use a different slave address from the other

four outputs and four inputs. Eight push-pull outputs (O8–

O15) use the 101xxxx addresses while the four outputs

(O0, O1, O6, and O7) and inputs (I2–I5) use addresses

with 110xxxx. The RST input clears the serial interface in

case of a bus lockup, terminating any serial transaction to

or from the MAX7326.

Functional Overview

The MAX7326 is a general-purpose port expander

operating from a +1.71V to +5.5V supply that provides

12 push-pull output ports with 20mA sink, 10mA source

drive capability, and four CMOS input ports that are

overvoltage protected to +6V. The MAX7326 is rated to

Table 1. MAX7319–MAX7329 Family Comparison

I C

INPUT

INPUTS INTERRUPT

MASK

OPEN-

DRAIN

OUTPUTS OUTPUTS

PUSH-

PULL

PART

SLAVE

ADDRESS

CONFIGURATION

16-PORT EXPANDERS

8 inputs and 8 push-pull outputs version:

8 input ports with programmable latching transition

detection interrupt and selectable pullups.

8 push-pull outputs with selectable default logic

levels.

MAX7324

Yes

—

Offers maximum versatility for automatic input

monitoring. An interrupt mask selects which inputs

cause an interrupt on transitions, and transition flags

identify which inputs have changed (even if only for a

transient) since the ports were last read.

101xxxx

And

8 I/O and 8 push-pull outputs version:

8 open-drain I/O ports with latching transition

detection interrupt and selectable pullups.

110xxxx

8 push-pull outputs with selectable default logic

levels.

Open-drain outputs can level shift the logic-high state

to a higher or lower voltage than V+ using external

pullup resistors, but pullups draw current when output

is low. Any open-drain port can be used as an input

by setting the open-drain output to logic-high.

MAX7325

Up to 8

—

Up to 8

Transition flags identify which open-drain port inputs

have changed (even if only for a transient) since the

ports were last read.

Maxim Integrated

│ 5

www.maximintegrated.com

1 2 3 456 7 8...18

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与MAX7326相关器件

型号	品牌	获取价格	描述	数据表
MAX7326AEG	MAXIM	获取价格	Parallel I/O Port, 0 I/O, BICMOS, PDSO24, 0.150 INCH, 0.25 INCH PITCH, MO-137AE, QSOP-24
MAX7326AEG+	MAXIM	获取价格	暂无描述
MAX7326AEG+T	MAXIM	获取价格	I<sup>2</sup>C Port Expander with 12 Push-Pull Outputs and Four Inputs
MAX7326AEG-T	MAXIM	获取价格	Parallel I/O Port, 0 I/O, BICMOS, PDSO24, 0.150 INCH, 0.25 INCH PITCH, MO-137AE, QSOP-24
MAX7326ATG	MAXIM	获取价格	Parallel I/O Port, 0 I/O, BICMOS, 4 X 4 MM, 0.80 MM HEIGHT, MO-220WGGD-2, TQFN-24
MAX7326ATG+	MAXIM	获取价格	Parallel I/O Port, 0 I/O, BICMOS, 4 X 4 MM, 0.80 MM HEIGHT, LEAD FREE, MO-220WGGD-2, TQFN-
MAX7326ATG-T	MAXIM	获取价格	暂无描述
MAX7326EVCMAXQU+	MAXIM	获取价格	Input Ports are Overvoltage Protected to 6V
MAX7326EVKIT	MAXIM	获取价格	Input Ports are Overvoltage Protected to 6V
MAX7326EVKIT+	MAXIM	获取价格	Input Ports are Overvoltage Protected to 6V

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