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MAX7301
4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port I/O Expander
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Status
Active: In Production.
Description
The MAX7301 compact, serial-interfaced I/O expander (or general-purpose I/O (GPIO) peripheral) provides microprocessors with up to 28 ports. Each port is individually user configurable to either a logic input or logic output.
Each port can be configured either as a push-pull logic output capable of sinking 10mA and sourcing 4.5mA, or a Schmitt logic input with optional internal pullup. Seven ports feature configurable transition detection logic, which generates an interrupt upon change of port logic level. The MAX7301 is controlled through an SPI™-compatible 4-wire serial interface.
The MAX7301AAX and MAX7301ATL have 28 ports and are available in 36-pin SSOP and 40-pin TQFN packages, respectively. The MAX7301AAI has 20 ports and is available in a 28-pin SSOP package.
For a 2-wire I²C-interfaced version, refer to the MAX7300 data sheet.
For a pin-compatible port expander with additional 24mA constant-current LED drive capability, refer to the MAX6957 data sheet.
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Data Sheet
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Key Features
- High-Speed 26MHz SPI-/QSPI-™/MICROWIRE™-Compatible Serial Interface
- 2.5V to 5.5V Operation
- -40°C to +125°C Temperature Range
- 20 or 28 I/O Ports, Each Configurable as
- Push-Pull Logic Output
- Schmitt Logic Input
- Schmitt Logic Input with Internal Pullup
- 11µA (max) Shutdown Current
- Logic Transition Detection for Seven I/O Ports
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Applications/Uses
- Automotive
- Gaming Machines
- Industrial Controllers
- System Monitoring
- White Goods
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Key Specifications:
| I/O Port Expanders |
| Part Number |
Interface |
I/O |
Interr.Out |
Drive Current
(mA) |
VSUPPLY
(V) |
VSUPPLY
(V) |
Budgetary Price |
| min |
max |
See Notes |
| MAX7301 |
Serial SPI 26Mbit |
20 or 28 |
Yes |
10 |
2.5 |
5.5 |
$2.63 @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
 Typical Operating Circuit
Application Notes
Product Guides
Reliability Reports
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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| MAX7301AAI
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Active |
SSOP;28 pin;81.6 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0095 (PDF)
Use pkgcode/variation: A28-1*
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-40°C to +125°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX7301AAI+
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Active |
SSOP;28 pin;81.6 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0095 (PDF)
Use pkgcode/variation: A28+1*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX7301AAI+T
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Active |
SSOP;28 pin;81.6 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0095 (PDF)
Use pkgcode/variation: A28+1*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX7301AAI-T
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Active |
SSOP;28 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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| MAX7301AAX
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Active |
SSOP;36 pin;163.4 mm²
Outline Drawing:21-0040 (PDF)
Land Pattern: 90-0098 (PDF)
Use pkgcode/variation: A36-4*
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-40°C to +125°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX7301AAX+
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Active |
SSOP;36 pin;163.4 mm²
Outline Drawing:21-0040 (PDF)
Land Pattern: 90-0098 (PDF)
Use pkgcode/variation: A36+4*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX7301AAX+T
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Active |
SSOP;36 pin;163.4 mm²
Outline Drawing:21-0040 (PDF)
Land Pattern: 90-0098 (PDF)
Use pkgcode/variation: A36+4*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX7301AAX-T
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Active |
SSOP;36 pin;163.4 mm²
Outline Drawing:21-0040 (PDF)
Land Pattern: 90-0098 (PDF)
Use pkgcode/variation: A36-4*
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-40°C to +125°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX7301ANI
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Active |
PDIP(N);28 pin;289.5 mm²
Outline Drawing:21-0043 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: N28-2*
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-40°C to +125°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX7301ANI+
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Active |
PDIP(N);28 pin;289.5 mm²
Outline Drawing:21-0043 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: N28+2*
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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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| MAX7301ATL+
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Active |
TQFN;40 pin;37.2 mm²
Outline Drawing:21-0141 (PDF)
Land Pattern: 90-0055 (PDF)
Use pkgcode/variation: T4066+5*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX7301ATL+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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| MAX7301ATL+T
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Active |
TQFN;40 pin;37.2 mm²
Outline Drawing:21-0141 (PDF)
Land Pattern: 90-0055 (PDF)
Use pkgcode/variation: T4066+5*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX7301ATL+TGH7
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Active |
TQFN;40 pin;37.2 mm²
Outline Drawing:21-0141 (PDF)
Land Pattern: 90-0055 (PDF)
Use pkgcode/variation: T4066+5*
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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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Similar Products by Function
| MAX1608, MAX1609 |
Octal, SMBus-to-Parallel I/O Expanders |
| MAX6957 |
4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port LED Display Driver and I/O Expander |
| MAX7300 |
2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port I/O Expander |
| MAX6956 |
2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port LED Display Driver and I/O Expander |
| MAX7310 |
2-Wire-Interfaced 8-Bit I/O Port Expander with Reset |
| MAX7311 |
2-Wire-Interfaced 16-Bit I/O Port Expander with Interrupt and Hot-Insertion Protection |
| MAX6965 |
9-Output LED Driver with Intensity Control and Hot-Insertion Protection |
| MAX7312 |
2-Wire-Interfaced 16-Bit I/O Port Expander with Interrupt and Hot-Insertion Protection |
| MAX7313 |
16-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection |
| MAX7315 |
8-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection |
| MAX7316 |
10-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection |
| MAX7314 |
18-Port GPIO with LED Intensity Control, Interrupt, and Hot-Insertion Protection |
| MAX6964 |
17-Output LED Driver/GPO with Intensity Control and Hot-Insertion Protection |
| MAX7317 |
10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection |
| MAX7318 |
2-Wire-Interfaced, 16-Bit, I/O Port Expander with Interrupt and Hot-Insertion Protection |
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Information Index
Document Ref.: 19-2438
Rev 6;
2006-04-19
This page last modified: 2010-05-12
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