›

MAX232, MAX232A

+5V-Powered, Multichannel RS-232 Drivers/Receivers

Please check latest availability status for a specific part variant.

Overview

Description

The MAX220–MAX249 family of line drivers/receivers is intended for all EIA/TIA-232E and V.28/V.24 communications interfaces, particularly applications where ±12V is not available..

The MAX225, MAX233, MAX235, and MAX245/MAX246/MAX247 use no external components and are recommended for applications where printed circuit board space is critical.

The MAX220–MAX249 are offered in 26 different packages with temperatures from 0 to +70°C up to -55°C to +125°C. See ordering information table at the end of the data sheet for all package and temperature options.

MAX220, MAX232, MAX232A: Pin Configuration and Typical Operating Circuit

Enlarge+

Key Features

Saves Board Space
Integrated Charge Pump Circuitry
- Eliminates the Need for a Bipolar ±12V Supply
- Enables Single Supply Operation from +5V Supply
Integrated Capacitors (MAX223, MAX233, MAX235, MAX245–MAX247)
Saves Power for Reduced Power Requirements
5µW Shutdown Mode

Applications/Uses

Interface Translation
Multidrop RS-232 Networks
Portable Diagnostics Equipment

Parametric Specs

See parametric specs for RS-232 Line Driver/Receivers (136)

Part Number

V_SUPPLY
(V)

Data Rate
(kbps)

I_CC
(mA)

Internal Charge Pump

Ext. Caps

Cap. Value
(µF)

Rx Active in Shutdn

Package/Pins

Budgetary
Price

min

typ

nom

See Notes

MAX220

120

0.5

Yes

0.1

$3.63 @1k

MAX222

200

Yes

0.1

$2.66 @1k

MAX223

120

Yes

SOIC (W)/28

SSOP/28

$2.93 @1k

MAX230

120

Yes

CDIP/20

PDIP/20

SOIC (W)/20

$4.62 @1k

MAX231

120

0.4

CDIP/14

PDIP/14

SOIC (W)/16

$2.72 @1k

MAX232

120

Yes

$2.04 @1k

MAX232A

200

Yes

0.1

SOIC(N)/8

$3.01 @1k

MAX233

120

Yes

PDIP HYBRID/20

$4.85 @1k

MAX233A

200

Yes

PDIP HYBRID/20

SOIC HYBRID (W)/20

$6.61 @1k

MAX234

120

Yes

$2.72 @1k

MAX236

120

Yes

CDIP/24

PDIP/24

SOIC (W)/24

$4.77 @1k

MAX237

120

Yes

CDIP/24

PDIP/24

SOIC (W)/24

$4.95 @1k

MAX238

120

Yes

$2.43 @1k

MAX239

120

0.4

PDIP/24

SOIC (W)/24

$2.43 @1k

MAX240

120

Yes

MQFP/44

$5.78 @1k

MAX241

120

Yes

SOIC (W)/28

SSOP/28

$2.93 @1k

MAX242

200

Yes

0.1

$2.66 @1k

MAX243

200

Yes

0.1

$3.63 @1k

MAX244

120

Yes

DICE SALES/N

PLCC/44

$9.43 @1k

MAX248

120

Yes

DICE SALES/N

PLCC/44

$21.67 @1k

MAX249

120

Yes

PLCC/44

$8.25 @1k

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 and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Design Resources

Technical Documents

App Note 4223 The Evolution of the RS-232 Transceivers
App Note 3580 Redundant-Transceiver RS-232 Link Has ±40V Overvoltage Protection
App Note 3024 IrDA and RS-232: A Match Made in Silicon
Tutorial 2141 Determining Clock Accuracy Requirements for UART Communications
Tutorial 2020 Choosing the Right RS-232 Transceiver
Tutorial 1834 Lower the Supply Current in Your RS-232 System
Tutorial 723 Selecting and Using RS-232, RS-422, and RS-485 Serial Data Standards

Additional Resources

RS-232 Resources ›

Quality And Environmental

Product Reliability Reports: MAX232A.pdf MAX232.pdf

Device	Fab Process	Technology	Sample size	Rejects	FIT at 25°C	FIT at 55°C	Material Composition

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >

Order

Status:

Package:

Temperature:

Related Resources

New Products

MAX22088
Homebus Transceiver

High Integration Reduces BOM and Footprint
Configurability Enables Flexible Design
Integrated Protection for Robust Communication

MAX14829
Low Power IO-Link Device Transceiver with Dual Drivers

Low Power Dissipation Reduces the Thermal Footprint for Small Sensors
High Configurability and Integration Reduce SKUs
Selectable Driver Integrated Protection Enables Robust Communication

MAX33011E
+5V, 5Mbps CAN Transceiver with ±65V Fault Protection, Fault Detection and Reporting, ±25V CMR, and ±40kV ESD Protection

Integrated Protection Increases Robustness
Family Provides Flexible Design Options
Fault Detection and Reporting

MAX33014E
+5V, 5Mbps CAN Transceiver with ±65V Fault Protection, Fault Detection and Reporting, ±25V CMR, and ±40kV ESD Protection

Integrated Protection Increases Robustness
Family Provides Flexible Design Options
Fault Detection and Reporting

MAX33012E
+5V, 5Mbps CAN Transceiver with ±65V Fault Protection, Fault Detection and Reporting, ±25V CMR, and ±40kV ESD Protection

Integrated Protection Increases Robustness
Family Provides Flexible Design Options
Fault Detection and Reporting

MAX33015E
+5V, 5Mbps CAN Transceiver with ±65V Fault Protection, Fault Detection and Reporting, ±25V CMR, and ±40kV ESD Protection

Integrated Protection Increases Robustness
Family Provides Flexible Design Options
Fault Detection and Reporting

MAX22028
Compact, Isolated, Half-Duplex RS-485/RS-422 Transceivers with AutoDirection Control

High-Level Integration Reduces Overall Solution Size
Integrated Protection Ensures Robust Communication
Enables Flexible System Design

MAX22027F
Compact, Isolated, Half-Duplex RS-485/RS-422 Transceivers with AutoDirection Control

High-Level Integration Reduces Overall Solution Size
Integrated Protection Ensures Robust Communication
Enables Flexible System Design

MAX22028F
Compact, Isolated, Half-Duplex RS-485/RS-422 Transceivers with AutoDirection Control

High-Level Integration Reduces Overall Solution Size
Integrated Protection Ensures Robust Communication
Enables Flexible System Design

MAX22025F
Compact, Isolated, Half-Duplex RS-485/RS-422 Transceivers with AutoDirection Control

High-Level Integration Reduces Overall Solution Size
Integrated Protection Ensures Robust Communication
Enables Flexible System Design

MAX22026
Compact, Isolated, Half-Duplex RS-485/RS-422 Transceivers with AutoDirection Control

High-Level Integration Reduces Overall Solution Size
Integrated Protection Ensures Robust Communication
Enables Flexible System Design

MAX22027
Compact, Isolated, Half-Duplex RS-485/RS-422 Transceivers with AutoDirection Control

High-Level Integration Reduces Overall Solution Size
Integrated Protection Ensures Robust Communication
Enables Flexible System Design

MAX22026F
Compact, Isolated, Half-Duplex RS-485/RS-422 Transceivers with AutoDirection Control

High-Level Integration Reduces Overall Solution Size
Integrated Protection Ensures Robust Communication
Enables Flexible System Design

MAX22025, MAX22025F
Compact, Isolated, Half-Duplex RS-485/RS-422 Transceivers with AutoDirection Control

High-Level Integration Reduces Overall Solution Size
Integrated Protection Ensures Robust Communication
Enables Flexible System Design

MAX22520
One-Time Programmable (OTP) Industrial Sensor Output Driver

High Configurability Supports a Wide Range of Sensor Designs
Robust Design for Harsh Industrial Environments
Small Form Factor for Compact Designs

Related Packaging

Technical Docs

Type	ID	Title
App Note	4223	The Evolution of the RS-232 Transceivers
App Note	3580	Redundant-Transceiver RS-232 Link Has ±40V Overvoltage Protection
App Note	3024	IrDA and RS-232: A Match Made in Silicon
Tutorial	2141	Determining Clock Accuracy Requirements for UART Communications
Tutorial	2020	Choosing the Right RS-232 Transceiver
Tutorial	1834	Lower the Supply Current in Your RS-232 System
Tutorial	723	Selecting and Using RS-232, RS-422, and RS-485 Serial Data Standards

Technical Docs