MAX491CSD

Images are for reference only

MAX491CSD

IC TRANSCEIVER FULL 1/1 14SOIC

100% Original & New

24 Hours ready to ship

365 Days Warranty

RFQ & Get more Discounts

Specifications

Supplier Rochester Electronics, LLC,Analog Devices Inc./Maxim Integrated
Package Tube,Tube
ProductStatus Obsolete
Type Transceiver
Protocol RS422, RS485
NumberofDrivers/Receivers 1/1
Duplex Full
ReceiverHysteresis 70 mV
DataRate 2.5Mbps
Voltage-Supply 4.75V ~ 5.25V
OperatingTemperature 0°C ~ 70°C
MountingType Surface Mount
Package/Case 14-SOIC (0.154, 3.90mm Width)

Overview

Description

Introduction to MAX491CSD
- The MAX491CSD is a Maxim/Analog Devices RS-485/RS-422 transceiver. It combines a differential line driver and a differential line receiver in one device for robust serial communication over multi-point networks.
- It operates from a single supply across a wide voltage range and supports standard RS-485/RS-422 signaling.
- The device provides direction control via the DE (driver enable) pin and a receiver enable (RE) pin to tri-state the receiver as needed.
- It includes fail-safe logic so RO is a valid logic level (typically high) when the bus is idle, open, or shorted.
- The CSD suffix indicates a specific package/revision of the part.
- Typical applications: industrial automation, building automation, data acquisition, and any long-distance or multi-drop serial links.
- For exact electrical specs (Vcc range, data rate, propagation delay, pinout, ESD protection), consult the MAX491CSD datasheet. I can help with a quick pinout summary if you’d like.

Features

Key features of MAX491CSD (RS-485/RS-422 transceiver):
- Half‑duplex RS‑485/RS‑422 transceiver
- 5V single‑supply operation; industrial temperature range (-40°C to +85°C)
- Up to 2.5 Mbps data rate
- 1/8 unit‑load receiver; supports up to 32 devices on the bus
- Fail‑safe receiver: RO outputs high when bus is idle, open, or shorted
- Separate DI, RO, DE and /RE pins (DE enables driver; /RE enables receiver)
- Low power consumption
- 8‑pin package (CSD), with A, B bus pins and TTL/CMOS input thresholds
- Bus‑transient protection and ESD protection on A/B lines
Note: Verify exact specs in the datasheet for your manufacturing lot, as there can be small variant differences.

Package

MAX491CSD comes in an 8-pin SOIC (small-outline) surface-mount package.

Pinout

Pin count: 8 pins (SOIC-8/DIP-8).
Function: RS-485/RS-422 transceiver (half‑duplex). Pins include DI (data in), RO (data out), DE (driver enable), /RE (receiver enable), A and B (differential bus), Vcc, and GND.

Manufacturer

Manufacturer: Maxim Integrated (now part of Analog Devices).
What kind of company: A global semiconductor company that designs and markets analog and mixed-signal integrated circuits; historically fabless (outsourcing fabrication) and now part of Analog Devices.

Application

MAX491CSD is a low-power RS-485/RS-422 differential transceiver with multipoint capability. Typical applications include industrial automation and control (PLCs, motor controllers), process/building automation, data acquisition and telemetry, instrumentation and sensor networks, and any long-distance, noise-prone differential-bus communications.

Equivalent

MAX491CSD is a 5V RS-485/RS-422 transceiver. Direct equivalents from major vendors include: Maxim MAX485; TI SN65HVD178 (and SN65HVD177); ST SP485/SP487; Analog Devices ADM485; Onsemi MC485. Always verify pinout, data rate, and feature compatibility before substituting.

Shipping

Shipping MethodsWe

offer global shipping services through DHL, FedEx, TNT, UPS, or any other forwarder of your choice.


Shipping Fee Reference (DHL/FedEx):

DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.

FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.

UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.

TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.

EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.

Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.

Payments

Payment Methods

The Payment term is 100% Prepaid.

Currently, we only accept the below payment methods:

1. PayPal

2. Credit/ Debit Card

3. Wire Transfer

Similar