MAX13485E, MAX13486E Half-Duplex RS-485/RS-422 Transceivers in µDFN

Description

The MAX13485E/MAX13486E +5V, half-duplex, ±15kV ESD-protected RS-485 transceivers feature one driver and one receiver. These devices include fail-safe circuitry, guaranteeing a logic-high receiver output when receiver inputs are open or shorted. The receiver outputs a logic-high if all transmitters on a terminated bus are disabled (high impedance). The MAX13485E/MAX13486E include a hot-swap capability to eliminate false transitions on the bus during power-up or live-insertion.

The MAX13485E features reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free transmission up to 500kbps. The MAX13486E driver slew rate is not limited, allowing transmit speeds up to 16Mbps.

The MAX13485E/MAX13486E feature a 1/4-unit load receiver input impedance, allowing up to 128 transceivers on the bus. These devices are intended for half-duplex communications. All driver outputs are protected to ±15kV ESD using the Human Body Model. The MAX13485E/MAX13486E are available in 8-pin SO and space-saving 8-pin µDFN packages. The devices operate over the extended -40°C to +85°C temperature range.

Key Features

Applications/Uses

+5V Operation
True Fail-Safe Receiver While Maintaining EIA/TIA-485 Compatibility
Hot-Swappable for Telecom Applications
Enhanced Slew-Rate Limiting Facilitates Error-Free Data Transmission (MAX13485E)
High-Speed Version (MAX13486E) Allows for Transmission Speeds Up to 16Mbps
Extended ESD Protection for RS-485/RS-422 I/O Pins ±15kV Using Human Body Model
1/4 Unit Load, Allowing Up to 128 Transceivers on the Bus
Available in Space-Saving 8-Pin μDFN or Industry Standard 8-Pin SO Packages

	Automated HVAC Systems
	Industrial Controls
	Industrial Motor Drives
	Utility Meters

Key Specifications: RS-422/485 Line Driver/Receivers

Part Number

Number of Tx/Rx

Duplex

Supply Voltage (V)

Typ. I_CC (mA)

Data Rate (kbps)

ESD Protection (±kV)

Tx EN

Rx EN

Typ. Shutdown I_CC (µA)

Number of Rx/Tx on Bus

Rx Failsafe with Inputs:

Features

Slew Rate Limited

RoHS Available

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

Price^**

MAX13485E

1Tx + 1Rx

Half

4.5

500

Yes

128

Open or Shorted

•	Hot-Swap Support

•	Low Power Shutdown

Yes

MicroDFN/8
SOIC/8

-40 to +85

$1.25 @ 1k

MAX13486E

16,000

•	High Speed

•	Hot-Swap Support

•	Low Power Shutdown

$1.25 @ 1k

See All RS-422/485 Line Driver/Receivers (146)

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.

Ordering Information

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. More: SeeFull Data Sheet or Part 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.

Devices: 1-8 of 8

MAX13485E

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX13485EELA+T

MicroDFN;8 pin;4 mm²
Dwg: 21-0164B (PDF)
Use pkgcode/variation: L822+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX13485EELA+

MicroDFN;8 pin;4 mm²
Dwg: 21-0164B (PDF)
Use pkgcode/variation: L822+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX13485EESA+

SOIC;8 pin;31 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S8+2*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX13485EESA+T

SOIC;8 pin;31 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S8+2*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX13486E

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX13486EELA+T

MicroDFN;8 pin;4 mm²
Dwg: 21-0164B (PDF)
Use pkgcode/variation: L822+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX13486EELA+

MicroDFN;8 pin;4 mm²
Dwg: 21-0164B (PDF)
Use pkgcode/variation: L822+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX13486EESA+

SOIC;8 pin;31 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S8+2*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX13486EESA+T

-40°C to +85°C

See data sheet

More Information

	New Product Press Release 2007-03-05
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