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MAX491EPD+

Name: MAX491EPD+
Brand: Analog Devices Inc./Maxim Integrated
Rating: 4.8 (10 reviews)

RS-422/RS-485 Interface IC Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers

Brands: Analog Devices Inc./Maxim Integrated

Mfr.Part #: MAX491EPD+

Datasheet: MAX491EPD+ Datasheet (PDF)

Package/Case: 14-DIP

Product Type: Drivers, Receivers, Transceivers

RoHS Status:

Stock Condition: 8,169 pcs, New Original

Warranty: 1 Year Ovaga Warranty - Find Out More

Quick Quote

Please submit RFQ for MAX491EPD+ or email to us: Email: [email protected], we will contact you within 12 hours.

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MAX491EPD+ General Description

The MAX481, MAX483, MAX485, MAX487–MAX491, and MAX1487 are low-power transceivers for RS-485 and RS-422 communication. Each part contains one driver and one receiver.

Features

Low Power Consumption Minimizes Thermal Dissipation, Reducing System Cost
- 120µA to 500µA Quiescent Current
- Shutdown Current of 0.1µA
- Single 5V Supply Voltage
Slew-Rate-Limited Drivers (MAX483/MAX487/MAX488 and MAX489)
- Up to 250kbps Data Rate
- Unlimited Drivers: Up to 2.5Mbps Data Rate
Integrated Protection Enhances System Robustness
- Short Circuit Current Limited Driver
- Integrated Thermal Shutdown
- Receiver Fail-Safe for Input Open Circuit
- Guarantees Logic High
1/4 Unit Loading (MAX487/ MAX1487 only) Allows Up to 128 Devices on a Single Bus
- 48kΩ Receiver Input Resistance

Application

Industrial-Control Local Area Networks
Level Translators
Low-Power RS-422 Transceivers
Low-Power RS-485 Transceivers
Transceivers for EMI-Sensitive Applications

Specifications

Parameter	Value	Parameter	Value
Series	MAX491	Mounting Style	Through Hole
Function	Transceiver	Number of Drivers	1 Driver
Number of Receivers	1 Receiver	Data Rate	2.5 Mb/s
Max Supply Voltage	5 V	Supply Voltage - Min	5 V
Minimum Operating Temperature (°C)	- 40	Maximum Operating Temperature (°C)	+ 85
Duplex	Full Duplex	Height	4.45 mm
Length	19.43 mm	Current @ Pmpp	500 uA
Collector-Emitter Saturation Voltage	5 V	Factory Pack Quantity	25
Width	7.87 mm	Unit Weight	0.057144 oz
Base Product Number	MAX491

Shipping

	Ship Fee	Lead Time
DHL	$20.00-$40.00 (0.50 KG)	2-5 days
Fedex	$20.00-$40.00 (0.50 KG)	2-5 days
UPS	$20.00-$40.00 (0.50 KG)	2-5 days
TNT	$20.00-$40.00 (0.50 KG)	2-5 days
EMS	$20.00-$40.00 (0.50 KG)	2-5 days
REGISTERED AIR MAIL	$20.00-$40.00 (0.50 KG)	2-5 days

Processing Time：Shipping fee depend on different zone and country.

Payment

Terms of payment		Hand Fee
	Wire Transfer	charge US$30.00 banking fee.
	Paypal	charge 4.5% service fee.
	Credit Card	charge 3.5% service fee.
	Western Union	charge US.00 banking fee.
	Money Gram	charge US$0.00 banking fee.

Guarantees

1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.

Packing

Step1 :Product Inventory
Step2 :Pressure Relief Packaging
Step3 :Anti Static Packaging
Step4 :Protective Packaging
Step5 :Sealed Packaging
Step6 :Preparation for shipment

We will inspect and count all goods before shipping to ensure that all products are intact and in accurate quantity, and will fully package them to ensure that they will not be damaged during transportation.

Q: How can I order the MAX491EPD+?

A: To place an order for the MAX491EPD+, select the "Add to Cart" button associated with the product listing on our website. Once selected, you can finalize your purchase by proceeding to the checkout page, where you can enter your payment and shipping information.

Q: What is the warranty period for the MAX491EPD+?

A: We offer a 1-year warranty on the MAX491EPD+. This warranty covers any defects in materials and artistry under normal use. During the warranty period, if the product is found to be defective, it will be repaired or replaced at no charge. For further details, please refer to our warranty policy.

Q: How does Ovaga ensure the authenticity of MAX491EPD+ from Analog Devices Inc./Maxim Integrated?

A: Ovaga has a dedicated business development team that rigorously tests and verifies the credentials of original Analog Devices Inc./Maxim Integrated manufacturers and authorized agents. All Analog Devices Inc./Maxim Integrated suppliers must pass a qualification review before they can list their MAX491EPD+ products on our platform. We emphasize sourcing from reliable channels and maintaining high product quality standards, ensuring you can make your purchase with confidence.

Q: How can I find detailed information about the MAX491EPD+ chips, such as application notes, factory information, and images?

A: You can utilize Ovaga's intelligent search engine, filter by the Ethernet PHY Products category, or visit the Analog Devices Inc./Maxim Integrated information page to find comprehensive details about the MAX491EPD+.

Q: Are the price and stock information for MAX491EPD+ on Ovaga's platform accurate?

A: Inventory levels for Analog Devices Inc./Maxim Integrated products can fluctuate and may not be updated in real time. The information is refreshed periodically within 24 hours. To confirm stock availability and final pricing, you must confirm your order with an Ovaga salesperson or customer service representative before proceeding with payment.

Q: Can I place orders offline with Ovaga?

A: Yes, offline orders are accepted. You can navigate to the "My Orders" section and enter transaction management to place your order. Reviewing the "Order Details" and proceeding to place the order is straightforward. Additionally, you may benefit from coupons or selected gifts when ordering online.

Q: What payment methods are accepted by Ovaga?

A: Ovaga accepts various payment methods, including Wire Transfer, PayPal, Credit Cards, Western Union, and Money Gram.

Q: How is shipping arranged, and how can I track my package?

A: Customers can choose from industry-leading freight companies such as DHL, FedEx, UPS, TNT, EMS, and Registered Air Mail. Once your order is processed for shipment, you will receive an email with the shipping status and tracking number. Note that tracking information may take up to 24 hours to be displayed by carriers. Typically, express delivery takes 2-5 days.

Q: What is the return or replacement process for MAX491EPD+?

A: Ovaga conducts Pre-Shipment Inspections (PSI) on all orders to ensure quality before shipment. Suppose there are issues such as quantity discrepancies, incorrect items, or visible defects (e.g., breakage or rust), and they are acknowledged by us. In that case, returns or replacements will be accepted under the following conditions:

●The defect must be reported within 365 days after delivery.
●The product must be unused and in its original, unopened packaging.
●Requesting Return Authorizations must be obtained.

For the return process:

●Please inform us within 365 days of receiving the product.
●Obtain Return Authorization from our team.
●Please refer to our After-Sale Matters for more detailed instructions.

Q: How can I contact Ovaga for support, including obtaining datasheets or pin diagrams for the MAX491EPD+?

A: For any after-sales support or technical inquiries, including requests for datasheets or pin diagrams, please get in touch with us via email at [email protected].

Q: What can you tell me about Ovaga's quality assurance practices?

A: Ovaga is committed to maintaining the highest standards of quality. We are certified under ISO14001, ISO 9001, IATF16949, ISO13485, and DUNS standards by the Quality Systems Registrar. This certification signifies that our operational systems meet stringent international standards in quality management. Our compliance is regularly reviewed and tested to ensure ongoing adherence to these standards, affirming our commitment to quality and continuous improvement.

Q: What do the ISO, IATF, and DUNS certifications mean for customers of Ovaga?

A: Our ISO, IATF, and DUNS certifications assure customers that Ovaga operates systems that are both accurate and comprehensive, meeting the rigorous requirements of the ISO, IATF, and DUNS standards. This certification underscores our long-term commitment to continuous improvement across our operations. As a note to our customers, while we strive for accuracy in product data on our website, we recommend referring to the manufacturer's datasheet or catalog for confirmed product specifications before placing an order. If you identify any discrepancies, please get in touch with us immediately.

Part points

The MAX491EPD+ is a high-speed, low-power RS-485 transceiver developed by Analog Devices. Key features include:
**Low Power Consumption**: Quiescent current ranges from 120 to 500 µA, while shutdown current is less than 0.1 µA.
**Integrated Protection**: It includes short circuit current limited driver, thermal shutdown protection, and receiver fail-safe for input open circuits.
**High-Speed Drivers**: Support data rates up to 250 kbps with unlimited drivers capable of 2.5 Mbps. The MAX491EPD+ is ideal for industrial automation, automotive communication, medical devices, telecommunications equipment, and test & measurement instruments where signal isolation and high-speed data transmission are required.
Equivalent

The equivalent products of MAX491EPD+ from Analog Devices include:
MAX491EPD - Same functionality, might have different package or minor revisions.
MAX483/487/488/489 - Slew-rate-limited drivers with similar data rates. Ensure to check the datasheets for compatibility and latest specifications.
Features

The MAX491EPD+ features a low power consumption design, with quiescent current ranging from 120 to 500 µA. It has a shutdown current of 0.1 µA and operates on a single 5V supply. The device includes slew-rate-limited drivers offering up to 250kbps data rate or unlimited drivers for rates up to 2.5Mbps. Integrated protection features include short circuit current limited driver, thermal shutdown, receiver fail-safe for input open circuits, ensuring logic high outputs. Furthermore, the MAX491EPD+ supports 1/4 unit loading (MAX487/MAX1487 only), enabling up to 128 devices on a single bus with a 48kΩ receiver input resistance.
Pinout

The MAX491EPD+ has a pin count of 14, which are organized in a DIP-14 package. Here's a concise summary of the key functions for each pin:
VCC (Power): Supplies +5V power to the IC.
GND (Ground): Provides a reference point for the power supply.
RS485+ (Transmitter A): Outputs data on the RS485 bus.
RS485- (Transmitter B): Outputs data on the RS485 bus, complementing RS485+.
RTS (Request to Send): Enables transmitter for transmission of data.
CTS (Clear to Send): Indicates if receiver is ready to receive data.
DTR (Data Terminal Ready): Normally pulled low by a host device, indicating that the terminal is ready to receive data.
DCD (Data Carrier Detect): Monitors the RS485 bus and indicates when a valid signal is detected.
INT: (Optional) Interrupt pin, active high. 1
VDDIO (Optional): Power supply for I/O logic. Please note that some pins may have additional functions depending on the specific configuration or application.
Manufacturer

The manufacturer of the MAX491EPD+ is Analog Devices, a global leader in technology solutions for various industries, including aerospace, industrial automation, and healthcare. Founded in 1968, Analog Devices is known for its innovation and commitment to quality.
Application Field

The MAX491EPD+ is widely used in industrial automation for signal conditioning, automotive communication systems, medical data acquisition, telecommunications for signal isolation, and test/measurement instruments.
Package

The MAX491EPD+ has a package type of PDIP-14, which stands for plastic dual in-line package with 14 pins.

Assembly Advice

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