19-3785; Rev 0; 10/06
2
I C Port Expander with Eight Push-Pull Outputs
and Eight Inputs
General Description
Features
♦ 400kHz, +6V-Tolerant I2C Serial Interface
♦ +1.71V to 5.5V Operating Voltage
♦ Eight Push-Pull Outputs
The MAX7324 2-wire serial-interfaced peripheral fea-
tures 16 I/O ports that are divided into eight push-pull
outputs and eight inputs. Each input features selectable
internal pullups, overvoltage protection to +6V, and
transition detection with an interrupt output.
♦ Eight Input Ports with Maskable, Latching
Transition Detection
All input ports are continuously monitored for state
changes (transition detection). The interrupt is latched,
allowing detection of transient changes. Any combina-
tion of inputs can be selected using the interrupt mask
to assert the INT output. When the MAX7324 is subse-
quently accessed through the serial interface, any
pending interrupt is cleared.
♦ Input Ports are Overvoltage Protected to +6V
♦ Transient Changes are Latched, Allowing
Detection Between Read Operations
♦ INT Output Alerts Change on Any Selection of
Inputs
♦ AD0 and AD2 Inputs Select from 16 Slave
The push-pull outputs are rated to sink 20mA and are
capable of driving LEDs. The RST input clears the serial
interface, terminating any I2C communication to or from
the MAX7324.
Addresses
♦ Low 0.6µA Standby Current
♦ -40°C to +125°C Temperature Range
The MAX7324 uses two address inputs with four-level
logic to allow 16 I2C slave addresses. The slave
address also enables or disables internal 40kΩ pullups
in groups of four ports.
Ordering Information
PIN-
PACKAGE
PKG
CODE
The MAX7324 is one device in a family of pin-compatible
port expanders with a choice of input ports, open-drain
I/O ports, and push-pull output ports (see Table 1).
PART
TEMP RANGE
MAX7324AEG+ -40°C to +125°C 24 QSOP
E24-1
The MAX7324 is available in 24-pin QSOP and TQFN
packages, and is specified over the -40°C to +125°C
automotive temperature range.
24 TQFN-EP*
(4mm x 4mm)
MAX7324ATG+ -40°C to +125°C
T2444-3
+Denotes lead-free package.
*EP = Exposed paddle.
Applications
Cell Phones
SAN/NAS
Servers
Notebooks
Automotive
Satellite Radio
Selector Guide
OPEN-
Pin Configurations
INTERRUPT
PUSH-PULL
DRAIN
PART
INPUTS
MASK
OUTPUTS
OUTPUTS
TOP VIEW
MAX7324
8
Yes
—
—
8
8
18 17 16 15 14 13
MAX7325 Up to 8
MAX7326
MAX7327 Up to 4
Up to 8
—
19
12
SCL
O10
4
Yes
—
12
12
SDA 20
11 O9
Up to 4
21
22
23
24
10
9
V+
O8
MAX7324
INT
GND
RST
AD2
I7
I6
8
EXPOSED PADDLE
7
+
Typical Application Circuit and Functional Diagram appear
at end of data sheet.
1
2
3
4
5
6
TQFN (4mm x 4mm)
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
5秒后页面跳转
全球首块英伟达H200交付 黄仁勋“送货上门”
常用8脚开关电源芯片型号大全
74HC04芯片引脚图及功能、应用电路图讲解
CR6842芯片参数、引脚配置、应用电路图详解
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
