MAX7312AAG+ Maxim Integrated Products, MAX7312AAG+ Datasheet

IC I/O EXPANDER I2C 16B 24SSOP

MAX7312AAG+

Manufacturer Part Number
MAX7312AAG+
Description
IC I/O EXPANDER I2C 16B 24SSOP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX7312AAG+

Interface
I²C, SMBus
Number Of I /o
16
Interrupt Output
Yes
Frequency - Clock
400kHz
Voltage - Supply
2 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
24-SSOP
Includes
POR
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX7312 2-wire-interfaced expander provides 16-bit
parallel input/output (I/O) port expansion in SMBus™ and
I
registers, output port registers, polarity inversion regis-
ters, configuration registers, a bus timeout register, and
an I
SMBus. The system master can invert the MAX7312 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
an output. A power-on reset (POR) initializes the 16 I/Os
as inputs. Three address select pins configure the part
to one of 64 slave ID addresses.
The MAX7312 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
up to 6V.
The MAX7312 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 with integrated 100kΩ
pullup resistors, refer to the MAX7311 data sheet.
19-3057; Rev 3; 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.
2
C applications. The MAX7312 consists of input port
2
C-compatible serial interface logic, compatible with
Servers/Blades
RAID Systems
Medical Equipment
Instrumentation and Test Measurement
Networking
with Interrupt and Hot-Insertion Protection
2-Wire-Interfaced 16-Bit I/O Port Expander
TOP VIEW
________________________________________________________________ Maxim Integrated Products
GND
AD1
AD2
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
INT
General Description
10
11
12
1
2
3
4
5
6
7
8
9
TSSOP/SSOP/SO
MAX7312
Applications
24
23
22
21
20
19
18
17
16
15
14
13
V +
SDA
SCL
AD0
I/O15
I/O14
I/O13
I/O12
I/O11
I/O10
I/O9
I/O8
t
= 0V)
♦ 400kbps I
♦ 2V to 5.5V Operation
♦ 5V Overvoltage Tolerant I/Os
♦ Supports Hot Insertion
♦ 16 I/O Pins that Default to Inputs on Power-Up
♦ Open-Drain Interrupt Output (INT)
♦ Bus Timeout for Lock-Up-Free Operation
♦ Noise Filter on SCL/SDA Inputs
♦ 64 User-Selectable Slave ID Addresses
♦ Low Standby Current (2.9µA typ)
♦ Polarity Inversion
♦ 4mm
♦ -40°C to +125°C Operation
SMBus is a trademark of Intel Corp.
I,
Ia
l-
ne
I.
MAX7312AWG -40°C to +125°C 24 Wide SO
MAX7312AAG
MAX7312ATG
MAX7312AUG
PART
SDA
SCL
AD1
AD2
INT
V+
4mm, 0.8mm Thin QFN Package
19
20
21
22
23
24
2
C-Compatible Serial Interface
-40°C to +125°C 24 SSOP
-40°C to +125°C
-40°C to +125°C 24 TSSOP
18
1
TEMP RANGE
17
2
MAX7312ATG
THIN QFN
16
3
Ordering Information
15
4
Pin Configurations
14
5
13
6
PIN-PACKAGE
24 Thin QFN
(4mm x 4mm)
12
11
10
9
8
7
I/O10
I/O9
I/O8
GND
I/O7
I/O6
Features
T2444-4
CODE
PKG
1

Related parts for MAX7312AAG+

MAX7312AAG+ Summary of contents

Page 1

... I/O6 10 I/O7 11 GND 12 TSSOP/SSOP/SO ________________________________________________________________ Maxim Integrated Products 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. ♦ 400kbps I ♦ 5.5V Operation ♦ 5V Overvoltage Tolerant I/Os ♦ Supports Hot Insertion ♦ 16 I/O Pins that Default to Inputs on Power-Up ♦ ...

Page 2

I/O Port Expander with Interrupt and Hot-Insertion Protection ABSOLUTE MAXIMUM RATINGS + V to GND ................................................................-0.3V to +6V I/O0–I/O15 as Inputs ....................................(GND - 0.3V) to +6V SCL, SDA, AD0, AD1, AD2, INT...................(GND - 0.3V) to +6V + Maximum ...

Page 3

I/O Port Expander with Interrupt and Hot-Insertion Protection DC ELECTRICAL CHARACTERISTICS (continued 5.5V -40°C to +125°C, unless otherwise noted. Typical values are 3.3V PARAMETER SYM ...

Page 4

I/O Port Expander with Interrupt and Hot-Insertion Protection (T = +25°C, unless otherwise noted.) A SUPPLY CURRENT vs. TEMPERATURE 100 f = 400kHz SCL 90 ALL I/Os UNLOADED ...

Page 5

I/O Port Expander with Interrupt and Hot-Insertion Protection (T = +25°C, unless otherwise noted.) A I/O SOURCE CURRENT vs. OUTPUT HIGH VOLTAGE -40° +25°C 30 ...

Page 6

I/O Port Expander with Interrupt and Hot-Insertion Protection AD0 AD1 AD2 SCL SDA Figure 1. MAX7312 Block Diagram SDA t SU, DAT t LOW SCL t HIGH t HD, STA t R START CONDITION Figure ...

Page 7

I/O Port Expander with Interrupt and Hot-Insertion Protection SDA S SCL START CONDITION Figure 3. START and STOP Conditions SDA SCL Figure 4. Bit Transfer START CONDITION SCL SDA BY TRANSMITTER S SDA BY RECEIVER Figure 5. Acknowledge ...

Page 8

I/O Port Expander with Interrupt and Hot-Insertion Protection MAX7312 generates the acknowledge bit since the MAX7312 is the recipient. When the MAX7312 is trans- mitting to the master, the master generates the acknowledge bit. The MAX7312 has a ...

Page 9

I/O Port Expander with Interrupt and Hot-Insertion Protection Eight of the MAX7312’s nine registers are configured to operate as four register pairs: input ports, output ports, polarity inversion ports, and configuration ports. After sending 1 byte of data ...

Page 10

I/O Port Expander with Interrupt and Hot-Insertion Protection Data is clocked into a register on the falling edge of the acknowledge clock pulse. After reading the first byte, additional bytes may be read and reflect the content in ...

Page 11

I/O Port Expander with Interrupt and Hot-Insertion Protection Table 2. Registers 0x00, 0x01—Input Port Registers I7 BIT I15 I14 Table 3. Registers 0x02, 0x03—Output Port Registers O7 BIT O15 O14 Power-up default 1 Table 4. Registers 0x04, 0x05—Polarity ...

Page 12

I/O Port Expander with Interrupt and Hot-Insertion Protection Table 7. MAX7312 Address Map AD2 AD1 AD0 GND SCL GND + GND SCL V GND SDA GND + GND SDA SCL GND + + V SCL ...

Page 13

I/O Port Expander with Interrupt and Hot-Insertion Protection Table 7. MAX7312 Address Map (continued) AD2 AD1 AD0 SCL SCL GND + SCL SCL V SCL SDA GND + SCL SDA V SDA SCL GND + SDA SCL V ...

Page 14

I/O Port Expander with Interrupt and Hot-Insertion Protection (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages TOP VIEW ...

Page 15

I/O Port Expander with Interrupt and Hot-Insertion Protection (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages NOTES: 1. D&E DO NOT ...

Page 16

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 16 © 2005 Maxim Integrated Products ...

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