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Data Sheet

FULL DATA SHEET (PDF, 168kB) Download   E-Mail

Description

The MAX3480A/MAX3480B are electrically isolated RS-485/RS-422 data-communications interfaces. Transceivers, optocouplers, and a transformer are all included in one low-cost, 28-pin DIP package. A single +3.3V supply on the logic side powers both sides of the interface. The MAX3480B features 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 MAX3480A's driver slew rate is not limited, allowing transmission rates up to 2.5Mbps. These devices typically draw 180mA of quiescent supply current. The MAX3480B provides a low-power shutdown mode in which it consumes only 0.2µA. Drivers are short-circuit current limited and are 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 logic-high output if the input is open circuit. The MAX3480A/MAX3480B typically withstand 1600VRMS (1 minute) or 2000VRMS (1 second). Their isolated inputs and outputs meet RS-485/RS-422 specifications.

Key Features		Applications/Uses
Isolated Data Interface to 1600VRMS (1 minute) Slew-Rate-Limited Data Transmission (MAX3480B) High-Speed, Isolated, 2.5Mbps RS-485 Interface (MAX3480A) -7V to +12V Common-Mode Input Voltage Range with Respect to Isolated Ground Single +3.3V Supply Current Limiting and Thermal Shutdown for Driver Overload Protection Standard 28-Pin DIP Package		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

Diagram

Pin Configuration

Design Guides

Interface (PDF)

Reliability Reports

Show FIT data for: MAX3480A MAX3480B Request Reliability Report for: MAX3480A MAX3480B

Software/Models

none

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

MAX3480A	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX3480ACPI			Active	PDIP(W);28 pin;593 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
MAX3480ACPI+			Active	PDIP(W);28 pin;593 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
MAX3480AEPI			Active	PDIP(W);28 pin;593 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
MAX3480AEPI+			Active	PDIP(W);28 pin;593 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
MAX3480B	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX3480BCPI			Active	PDIP(W);28 pin;593 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
MAX3480BCPI+			Active	PDIP(W);28 pin;593 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
MAX3480BEPI			Active	PDIP(W);28 pin;593 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
MAX3480BEPI+			Active	PDIP(W);28 pin;593 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

Notes and Comments

Complete isolated RS-485 in one package

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