Maxim > Products > Interface, Interconnect, Signal Integrity > MAX3130, MAX3131

MAX3130, MAX3131

3V to 5.5V, IrDA Infrared Transceiver with Integrated RS-232 Interface

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX3130/MAX3131 combine an IrDA 1.2 compatible infrared transceiver with an RS-232 interface-all in a single 3V-powered hybrid microcircuit. The infrared transceiver supports IrDA data rates of 2.4kbps to 115kbps. The infrared receive channel provides a high-gain/low-noise PIN-diode amplifier with 100µA of ambient photodiode current rejection at a +3V supply. A high-power LED driver capable of sinking 200mA is included in the infrared transmit path. The on-board encoder/decoder (ENDEC) compresses/stretches signals to and from the external UART, allowing IrDA communication even with non-IrDA UARTs.

A 2-driver/2-receiver RS-232 transceiver supports data rates up to 120kbps. A proprietary, high-efficiency, dual charge-pump power supply and a low-dropout transmitter combine to deliver true RS-232 performance from a single +3.0V to +5.5V supply. Selectable shutdown for IR and RS-232 circuitry reduces supply current to 1µA.

The MAX3130 is optimized for applications using a single UART for both infrared and RS-232 communication. The infrared transmitter input and infrared receiver output are multiplexed with one RS-232 transmitter input and one RS-232 receiver output, respectively. The MAX3131's IrDA transceiver and RS-232 transceivers are separate and have their own data inputs and outputs.

Both these devices require a minimum of external components: four small 0.1µF capacitors, a photodiode, an infrared LED, and a current-setting resistor.

Data Sheet

Download	Rev 0	(PDF, 232kB)
E-Mail

Key Features

Integrated RS-232 and IrDA in Single 28-Pin SSOP Package
370µA Supply Current
IrDA 1.2 Compatible: 2.4kbps to 115kbps Data Rate
On-Board IR Encoder/Decoder Allows Use of Non-IrDA UARTs
+3.0V to +5.5V Single-Supply Operation
Meet EIA/TIA-232 Specifications Down to +3V
200mA, High-Current Infrared LED Drive
1µA Low-Power Shutdown with RS-232 Receivers Active

Applications/Uses

Battery-Powered Applications
Cell Phones
Handheld Equipment
IrDA Applications
Palmtop Computers
PDAs and Other Handheld Devices
Peripherals

Key Specifications:

Appletalk and IrDA

Part Number

Functions

V_SUPPLY
(V)

Data Rate
(kbps)

Single Ended Tx

Single Ended Rx

Shutdn

µP I/F

I_CC
(mA)

I_SHUTDN
(µA)

Package/Pins

Smallest Available Pckg.
(mm²)

Budgetary Price

max

max w/pins

See Notes

MAX3130

IrDA/RS-232 Transceiver

3.0 to 5.5

115.2

Yes

TTL/CMOS

81.6

MAX3131

See All Appletalk and IrDA (4)

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.

Diagram

Pin Configuration

Application Notes

Application Note 631		Circuit Enables PCs to Communicate via IrDA
Application Note 3024		IrDA and RS-232: A Match Made in Silicon

Product Guides

Interface (PDF)

Reliability Reports

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Software/Models

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Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX3130CAI			Active	SSOP;28 pin;81.6 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0095 (PDF) Use pkgcode/variation: A28M-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX3130CAI+			Active	SSOP;28 pin;81.6 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0095 (PDF) Use pkgcode/variation: A28M+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX3130CAI+T			Active	SSOP; Land Pattern: Not Available	0°C to +70°C	See data sheet
MAX3130CAI-T			Active	SSOP;28 pin Land Pattern: Not Available	0°C to +70°C	See data sheet
MAX3130EAI			Active	SSOP;28 pin;81.6 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0095 (PDF) Use pkgcode/variation: A28M-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX3130EAI+			Active	SSOP;28 pin;81.6 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0095 (PDF) Use pkgcode/variation: A28M+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX3130EAI+T			Active	SSOP;28 pin;81.6 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0095 (PDF) Use pkgcode/variation: A28M+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX3130EAI-T			Active	SSOP;28 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX3131CAI			Active	SSOP;28 pin;81.6 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0095 (PDF) Use pkgcode/variation: A28M-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX3131CAI-T			Active	SSOP;28 pin Land Pattern: Not Available	0°C to +70°C	See data sheet
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX3131EAI			Active	SSOP;28 pin;81.6 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0095 (PDF) Use pkgcode/variation: A28M-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX3131EAI+			Active	SSOP;28 pin;81.6 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0095 (PDF) Use pkgcode/variation: A28M+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX3131EAI+T			Active	SSOP; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX3131EAI-T			Active	SSOP;28 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet

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.

Notes and Comments

IrDA 1.2 compatible, 200 mA LED drive capability, switchable RS-232 or IrDA interface (MAX3130)
IrDA 1.2 compatible, 200 mA LED drive capability, separate RS-232 and IrDA interface (MAX3131)

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-1402 Rev 0; 1998-11-01
This page last modified: 2009-11-05