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MAX1480A, MAX1480B, MAX1480C, MAX1490A, MAX1490B

Complete, Isolated RS-485/RS-422 Data Interface
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Status Explanations for product status codes

Active: In Production.

Description

The MAX1480A/MAX1480B/MAX1480C/MAX1490A/MAX1490B are complete, electrically isolated, RS-485/RS-422 data-communications interface solutions in a hybrid microcircuit. Transceivers, optocouplers, and a transformer provide a complete interface in a standard DIP package. A single +5V supply on the logic side powers both sides of the interface.

The MAX1480B/MAX1480C/MAX1490B feature reduced-slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 250kbps. The MAX1480A/MAX1490A driver slew rate is not limited, allowing transmission rates up to 2.5Mbps. The MAX1480A/B/C are designed for half-duplex communication, while the MAX1490A/B feature full-duplex communication.

Drivers are short-circuit current limited and protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a known output (active-low RO low for the MAX1480A/B/C, RO high for the MAX1490A/B) if the input is open circuit.

The MAX1480A/MAX1480B/MAX1480C/MAX1490A/MAX1490B typically withstand 1600VRMS (1 minute) or 2000VRMS (1 second). Their isolated outputs meet all RS-485/RS-422 specifications. The MAX1480A/B/C are available in a 28-pin DIP package, and the MAX1490A/B are available in a 24-pin DIP package.
 

Data Sheet

Download this datasheet in PDF formatDownload Rev 5 (PDF, 1.3MB)
Send this datasheet to any email addressE-Mail

Key Features

  • For Integrated ESD Protection
    • MAX1480E/MAX1490E: ±15kV ESD-Protected, Isolated RS-485/RS-422 Data Interfaces
  • For Space-Constrained Applications
    • MAX3157: High CMRR, RS-485 Transceiver with ±50V Isolation
 

Applications/Uses

  • Automated Test Equipment (ATE)
  • HVAC/Building Control Networks
  • Industrial-Control Local Area Networks
  • Isolated RS-485/RS-422 Data Interface
  • Transceivers for EMI-Sensitive Applications
   

Key Specifications:

RS-422/485 Line Driver/Receivers
Part Number Tx/Rx Duplex VSUPPLY
(V)		 Galvanic Isolation
(±V)		 ICC
(mA)		 Data Rate
(kbps)		 Tx EN Rx EN ICC (Shutdn.)
(µA)		 Rx/Tx on Bus Package/Pins Budgetary Price
typ min typ See Notes
MAX1480A  1Tx + 1Rx Half 5 1000 60 2500 Yes No 0.2 128
PDIP(W)/28
 $11.60 @1k
MAX1480B  Half 35 250 Yes 128
PDIP(W)/28
 $11.08 @1k
MAX1480C  Half 35 250 Yes 128
PDIP(W)/28
 $11.60 @1k
MAX1490A  Full 100 2500 No 32
PDIP(W)/24
 $11.60 @1k
MAX1490B  Full 65 250 No 32
PDIP(W)/24
 $11.08 @1k
See All RS-422/485 Line Driver/Receivers (165)
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

MAX1490A, MAX1490B: Pin Configuration
Pin Configuration

MAX1480A, MAX1480B, MAX1480C: Pin Configuration
Pin Configuration

Application Notes

Application Note 2116   RS-485 Data Interface Gives Isolated, Full-Duplex Operation

Product Guides

Interface (PDF)

Reliability Reports

Reliability Report: MAX1490A.pdf MAX1490B.pdf
Show FIT data for:
Request Reliability Report for:

Software/Models

none

Ordering Information

Filters: Part Number: Package: Temperature: Tape and Reel Sample
Part Number Free
Sample		 Buy Status Explanations for product status codes Package:
TYPE PINS FOOTPRINT
DRAWING  CODE/VAR * 		Temp RoHS/Lead-Free?
Materials Analysis
MAX1480ACPI    
Active PDIP(W);28 pin;592.6 mm²
Outline Drawing:21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P28M-1*
0°C to +70°C RoHS/Lead-Free: No
Materials Analysis
MAX1480ACPI+  
Active PDIP(W);28 pin;592.6 mm²
Outline Drawing:21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P28M+1*
0°C to +70°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX1480AEPI    
Active PDIP(W);28 pin;592.6 mm²
Outline Drawing:21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P28M-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX1480AEPI+  
Active PDIP(W);28 pin;592.6 mm²
Outline Drawing:21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P28M+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX1480BCPI    
Active PDIP(W);28 pin;592.6 mm²
Outline Drawing:21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P28M-1*
0°C to +70°C RoHS/Lead-Free: No
Materials Analysis
MAX1480BCPI+  
Active PDIP(W);28 pin;592.6 mm²
Outline Drawing:21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P28M+1*
0°C to +70°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX1480BEPI    
Active PDIP(W);28 pin;592.6 mm²
Outline Drawing:21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P28M-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX1480BEPI+  
Active PDIP(W);28 pin;592.6 mm²
Outline Drawing:21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P28M+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX1480CCPI    
Active PDIP(W);28 pin;592.6 mm²
Outline Drawing:21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P28M-1*
0°C to +70°C RoHS/Lead-Free: No
Materials Analysis
MAX1480CCPI+  
Active PDIP(W);28 pin;592.6 mm²
Outline Drawing:21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P28M+1*
0°C to +70°C RoHS/Lead-Free: Lead Free
Materials Analysis
Part Number Free
Sample		 Buy Status Explanations for product status codes Package:
TYPE PINS FOOTPRINT
DRAWING  CODE/VAR * 		Temp RoHS/Lead-Free?
Materials Analysis
MAX1480CEPI    
Active PDIP(W);28 pin;592.6 mm²
Outline Drawing:21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P28M-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX1480CEPI+  
Active PDIP(W);28 pin;592.6 mm²
Outline Drawing:21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P28M+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX1490ACPG    
Active PDIP(W);24 pin;512 mm²
Outline Drawing:21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P24M-2*
0°C to +70°C RoHS/Lead-Free: No
Materials Analysis
MAX1490ACPG+  
Active PDIP(W);24 pin;512 mm²
Outline Drawing:21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P24M+2*
0°C to +70°C See data sheet
MAX1490AEPG    
Active PDIP(W);24 pin;512 mm²
Outline Drawing:21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P24M-2*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX1490AEPG+  
Active PDIP(W);24 pin;512 mm²
Outline Drawing:21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P24M+2*
-40°C to +85°C See data sheet
MAX1490BCPG    
Active PDIP(W);24 pin;512 mm²
Outline Drawing:21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P24M-2*
0°C to +70°C RoHS/Lead-Free: No
Materials Analysis
MAX1490BCPG+  
Active PDIP(W);24 pin;512 mm²
Outline Drawing:21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P24M+2*
0°C to +70°C See data sheet
MAX1490BEPG    
Active PDIP(W);24 pin;512 mm²
Outline Drawing:21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P24M-2*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX1490BEPG+  
Active PDIP(W);24 pin;512 mm²
Outline Drawing:21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P24M+2*
-40°C to +85°C See data sheet

Notes:
  1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
  2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
  3. 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.
  4. * 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

Complete isolated RS-485 in one package

Similar Products by Function

MAX1480E, MAX1490E ±15kV ESD-Protected, Isolated RS-485/RS-422 Data Interfaces
See All RS-422/485 Line Driver/Receivers (165 Products)

Products with Similar Part Numbers

MAX1480E, MAX1490E ±15kV ESD-Protected, Isolated RS-485/RS-422 Data Interfaces

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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
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Document Ref.: 19-0259 Rev 5; 2005-06-08
This page last modified: 2010-06-01

 


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