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MAX7319ATE+

更新时间： 2024-01-11 00:48:40

品牌	Logo	应用领域
美信 - MAXIM		并行IO端口微控制器和处理器外围集成电路信息通信管理
页数	文件大小	规格书
16页	251K
描述
I2C Port Expander with Eight Inputs and Maskable Transition Detection

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技术参数
数据手册

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MAX7319ATE+ 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Obsolete	零件包装代码：	QFN
包装说明：	3 X 3 MM, 0.80 MM HEIGHT, MO-220C, TDFN-16	针数：	16
Reach Compliance Code：	not_compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.62
JESD-30 代码：	S-XQCC-N16	JESD-609代码：	e0
长度：	3 mm	位数：	1
I/O 线路数量：		端口数量：	1
端子数量：	16	最高工作温度：	125 °C
最低工作温度：	-40 °C	封装主体材料：	UNSPECIFIED
封装代码：	HVQCCN	封装等效代码：	LCC16,.12SQ,20
封装形状：	SQUARE	封装形式：	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：	240	电源：	2/5 V
认证状态：	Not Qualified	座面最大高度：	0.8 mm
子类别：	Parallel IO Port	最大供电电压：	5.5 V
最小供电电压：	1.71 V	标称供电电压：	3.3 V
表面贴装：	YES	技术：	BICMOS
温度等级：	AUTOMOTIVE	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	NO LEAD	端子节距：	0.5 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	3 mm	uPs/uCs/外围集成电路类型：	PARALLEL IO PORT, GENERAL PURPOSE
Base Number Matches：	1

MAX7319ATE+ 数据手册

I C Port Expander with Eight Inputs and

Maskable Transition Detection

Table 1. MAX7319–MAX7329 Family Comparison (continued)

I C

INPUT

INTERRUPT

MASK

OPEN-

DRAIN

OUTPUTS OUTPUTS

PUSH-

PULL

SLAVE

ADDRESS

PART

INPUTS

APPLICATION

Four I/O, four output-only versions:

Four open-drain I/O ports with latching transition

detection interrupt and selectable pullups.

Four push-pull outputs with selectable power-up

default levels.

PCF8574-, PCF8574A-compatible versions:

Eight open-drain I/O ports with nonlatching transition

detection interrupt and pullups on all ports.

All ports power up as inputs (or logic-high outputs).

Any port can be used as an input by setting the

open-drain output to logic-high.

MAX7323

110xxxx

Up to 4

—

Up to 4

Up to 8

MAX7328

MAX7329

0100xxx

0111xxx

Up to 8

—

16-PORT EXPANDERS

MAX7324

Yes

—

Software equivalent to a MAX7320 plus a MAX7321.

Software equivalent to a MAX7320 plus a MAX7319.

Software equivalent to a MAX7320 plus a MAX7322.

Software equivalent to a MAX7320 plus a MAX7323.

101xxxx

and

110xxxx

MAX7325

Up to 8

—

MAX7326

Yes

—

MAX7327

Up to 4

changes. An input change sets one of eight flag bits

that identify changed input(s). All flags are cleared

upon a subsequent read or write transaction to the

MAX7319.

Standby Mode

When the serial interface is idle, the MAX7319 automat-

ically enters standby mode, drawing minimal supply

current.

A latching interrupt output, INT, is programmed to flag

input data changes on input ports through an interrupt

mask register. By default, data changes on any input

port force INT to a logic-low. The interrupt output, INT,

and all transition flags are cleared when the MAX7319

is next accessed through the serial interface.

Slave Address and Input Pullup Selection

Address inputs AD0 and AD2 determine the MAX7319

slave address and select which inputs have pullup

resistors. Pullups are enabled on the input ports in

groups of four (see Table 3). The MAX7319, MAX7321,

MAX7322, and MAX7323 use a different range of slave

addresses (110xxxx) than the MAX7320 (101xxxx).

Internal pullup resistors to V+ are selected by the

address-select inputs, AD0 and AD2. Pullups are

enabled on the input ports in groups of four (see Table 3).

The MAX7319 slave address is determined on each I C

transmission, regardless of whether the transmission is

actually addressing the MAX7319. The MAX7319 distin-

guishes whether address inputs AD2 and AD0 are con-

nected to SDA or SCL instead of fixed logic levels V+

or GND during this transmission. This means that the

MAX7319 slave address can be configured dynamically

in the application without cycling the device supply.

Initial Power-Up

On power-up, the transition detection logic is reset, and

INT is released to a high-impedance state. The inter-

rupt mask register is set to 0xFF, enabling the interrupt

output for transitions on all eight input ports. The transi-

tion flags are cleared to indicate no data changes.

On initial power-up, the MAX7319 cannot decode the

RST Input

address inputs AD2 and AD0 fully until the first I C

The RST input voids any I C transaction involving the

transmission. AD0 and AD2 initially appear to be con-

nected to V+ or GND. This is important because the

address selection determines which inputs have

MAX7319, forcing the MAX7319 into the I C STOP con-

dition. A reset does not affect the interrupt output (INT)

or change the contents of the interrupt mask register.

RST is overvoltage tolerant to +6V.

pullups applied. However, at power-up, the I C SDA

and SCL bus interface lines are high impedance at the

pins of every device (master or slave) connected to the

bus, including the MAX7319. This is guaranteed as part

_______________________________________________________________________________________

1...3 4 567 8 9...16

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MAX7319ATE-T	MAXIM	Parallel I/O Port, 1-Bit, 0 I/O, BICMOS, 3 X 3 MM, 0.80 MM HEIGHT, MO-220C, TDFN-16	获取价格
MAX731C/D	MAXIM	+5V/Adjustable Step-Up Current-Mode DC-DC Converters	获取价格
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