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MAX7311AUG+T 数据手册 - Maxim Integrated（美信）
制造商:
Maxim Integrated（美信）
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接口芯片
封装:
TSSOP-24
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MAX7311AUG+T数据手册
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General Description
The MAX7311 2-wire-interfaced expander provides 16-bit
parallel input/output (I/O) port expansion for SMBus™
and I
2
C™ applications. The MAX7311 consists of input
port registers, output port registers, polarity inversion reg-
isters, configuration registers, a bus timeout register, and
an I
2
C-compatible serial interface logic compatible with
SMBus. The system master can invert the MAX7311 input
data by writing to the active-high polarity inversion regis-
ter. The system master can enable or disable bus timeout
by writing to the bus timeout register.
Any of the 16 I/O ports can be configured as an input or
output. A power-on reset (POR) initializes the 16 I/Os
as inputs. Three address select pins configure one of
64 slave ID addresses.
The MAX7311 supports hot insertion. All port pins, the
INT output, SDA, SCL and the slave address inputs
AD0–2 remain high impedance in power down (V+ =
0V) with up to 6V asserted upon them.
The MAX7311 is available in 24-pin SO, SSOP, TSSOP,
and thin QFN packages and is specified over the -40°C
to +125°C automotive temperature range.
For applications requiring I/Os without pullup resistors,
refer to the MAX7312 data sheet.
Applications
Servers
RAID Systems
Industrial Control
Medical Equipment
PLCs
Instrumentation and Test Measurement
Features
♦ 400kbps I
2
C-Compatible Serial Interface
♦ 2V to 5.5V Operation
♦ 5V Overvoltage Tolerant I/Os
♦ Supports Hot Insertion
♦ 16 I/O Pins that Default to Inputs on Power-Up
♦ 100kΩ Pullup on Each I/O
♦ Open-Drain Interrupt Output (INT)
♦ Bus Timeout for Lock-Up-Free Operation
♦ Noise Filter on SCL / SDA Inputs
♦ 64 Slave ID Addresses Available
♦ Low Standby Current (2.9µA typ)
♦ Polarity Inversion
♦ 4mm
✕ 4mm, 0.8mm Thin QFN Package
♦ -40°C to +125°C Operation
MAX7311
2-Wire-Interfaced 16-Bit I/O Port Expander
with Interrupt and Hot-Insertion Protection
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
19-2747; Rev 4; 4/05
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.
SMBus is a trademark of Intel Corp.
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EVALUATION KIT
AVAILABLE
PART TEMP RANGE PIN-PACKAGE
PKG
CODE
MAX7311AWG -40°C to +125°C 24 Wide SO —
MAX7311AAG -40°C to +125°C 24 SSOP —
MAX7311ATG -40°C to +125°C
24 Thin QFN
(4mm
✕ 4mm)
T2444-4
MAX7311AUG -40°C to +125°C 24 TSSOP —
TOP VIEW
24
23
22
21
20
19
18
17
1
2
3
4
5
6
7
8
V
+
SDA
SCL
AD0I/O0
AD2
AD1
I/O15
I/O14
I/O13
I/O12I/O4
I/O3
I/O2
I/O1
16
15
14
13
9
10
11
12
I/O11
I/O10
I/O9
I/O8GND
I/O7
I/O6
I/O5
TSSOP/SSOP/SO
MAX7311
INT
THIN QFN
MAX7311ATG
19
20
21
22
12 3456
18 17 16 15 14 13
23
24
12
11
10
9
8
7
SCL
V+
SDA
INT
AD2
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
AD0
I/O15
I/O13
I/O12
I/O11
AD1
I/O10
I/O8
I/O9
GND
I/O6
I/O7
I/O14
Pin Configurations
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