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MAX7311
2-Wire-Interfaced 16-Bit I/O Port Expander with Interrupt and Hot-Insertion Protection
2-Wire-Interfaced 16-Bit I/O Port Expander with Interrupt and hot-Insertion Protection for SMBus-Compatible and I²C-Compatible Applications
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Status
Active: In Production.
Description
The MAX7311 2-wire-interfaced expander provides 16-bit parallel input/output (I/O) port expansion for SMBus™ and I²C applications. The MAX7311 consists of input port registers, output port registers, polarity inversion registers, configuration registers, a bus timeout register, and an I²C-compatible serial interface logic compatible with SMBus. The system master can invert the MAX7311 input data by writing to the active-high polarity inversion register. 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 active-low 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.
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Data Sheet
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An evaluation kit is available: MAX7311EVKIT
Key Features
- 400kbps I²C-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 (Active-Low 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 x 4mm, 0.8mm Thin QFN Package
- -40°C to +125°C Operation
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Applications/Uses
- Industrial Control
- Instrumentation and Test Measurement
- Medical Equipment
- PLCs
- RAID Systems
- Servers
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Key Specifications:
| I/O Port Expanders |
| Part Number |
Interface |
I/O |
Interr.Out |
Over Voltage Protect. |
Drive Current
(mA) |
VSUPPLY
(V) |
VSUPPLY
(V) |
Budgetary Price |
| min |
max |
See Notes |
| MAX7311 |
Serial 2-Wire 400kbit |
16 |
Yes |
5.5V |
40 |
2 |
5.5 |
$2.20 @1k |
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See All I/O Port Expanders (35)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Block Diagram
Application Notes
Product Guides
Reliability Reports
| Show FIT data for: |
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| Request Reliability Report for: |
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Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX7311AAG
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Active |
SSOP;24 pin;65.8 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0110 (PDF)
Use pkgcode/variation: A24-2*
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-40°C to +125°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX7311AAG+
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Active |
SSOP;24 pin;65.8 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0110 (PDF)
Use pkgcode/variation: A24+2*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX7311AAG+T
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Active |
SSOP;24 pin;65.8 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0110 (PDF)
Use pkgcode/variation: A24+2*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX7311AAG-T
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Active |
SSOP;24 pin
Land Pattern: Not Available
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-40°C to +125°C
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See data sheet
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| MAX7311ATG+
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Active |
TQFN;24 pin;16.8 mm²
Outline Drawing:21-0139 (PDF)
Land Pattern: 90-0022 (PDF)
Use pkgcode/variation: T2444+4*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX7311ATG+GH7
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Active |
QFN;
Land Pattern: Not Available
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-40°C to +125°C
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See data sheet
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| MAX7311ATG+T
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Active |
TQFN;24 pin;16.8 mm²
Outline Drawing:21-0139 (PDF)
Land Pattern: 90-0022 (PDF)
Use pkgcode/variation: T2444+4*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX7311ATG+TGH7
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Active |
TQFN;24 pin;16.8 mm²
Outline Drawing:21-0139 (PDF)
Land Pattern: 90-0022 (PDF)
Use pkgcode/variation: T2444+4*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX7311AUG
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Active |
TSSOP;24 pin;52.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0118 (PDF)
Use pkgcode/variation: U24-1*
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-40°C to +125°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX7311AUG+
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Active |
TSSOP;24 pin;52.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0118 (PDF)
Use pkgcode/variation: U24+1*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX7311AUG+T
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Active |
TSSOP;24 pin;52.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0118 (PDF)
Use pkgcode/variation: U24+1*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX7311AUG-T
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Active |
TSSOP;24 pin
Land Pattern: Not Available
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-40°C to +125°C
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See data sheet
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| MAX7311AWG+
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Active |
SOIC(W);24 pin;166.1 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0182 (PDF)
Use pkgcode/variation: W24+1*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX7311AWG+T
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Active |
SOIC(W);24 pin;166.1 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0182 (PDF)
Use pkgcode/variation: W24+1*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Information Index
Document Ref.: 19-2747
Rev 4;
2005-04-26
This page last modified: 2010-05-13
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