MAX485CPA

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MAX485CPA

IC TRANSCEIVER HALF 1/1 8PDIP

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Spezifikationen

Part Status Obsolete
Type Transceiver
Protocol RS422, RS485
Number of Drivers/Receivers 1/1
Duplex Half
Receiver Hysteresis 70 mV
Data Rate 2.5Mbps
Voltage - Supply 4.75V ~ 5.25V
Operating Temperature 0°C ~ 70°C
Mounting Type Through Hole
Package / Case 8-DIP (0.300", 7.62mm)
Supplier Device Package 8-PDIP
Base Product Number MAX485

Übersicht

Description

MAX485CPA is an 8-pin, low-power RS-485/RS-422 transceiver from Maxim (now Analog Devices). It combines a differential driver and receiver for half‑duplex communication on a single twisted-pair bus, powered from 4.5–5.5 V. Pins you’ll use are VCC, GND, A, B, DI (data in), RO (data out), DE (driver enable), and RE (receiver enable, active low). Features include a failsafe receiver that guarantees RO goes high when the bus is idle/open/shorted, low standby power, and protection on the bus. The device typically supports data rates up to about 2.5 Mbps and presents a small bus load (1/8 unit load) for multi‑drop networks. CPA denotes a specific package variant (e.g., 8‑pin SOIC/DIP). Typical applications are industrial automation, building controls, instrumentation, and any RS‑485 multi‑point network needing a simple MCU interface. For exact electrical specs, pinout, and package details, consult the MAX485CPA datasheet.

Features

Here are the key features of the MAX485CPA (RS-485/RS-422 transceiver):
- Half-duplex RS-485/RS-422 transceiver
- Single +5V supply
- 1/8 unit-load receiver for multipoint networks
- Data rate up to 2.5 Mbps
- Fail-safe receiver: RO goes high with open, shorted, or idle bus
- Separate driver-enable (DE) and receiver-enable (RE) controls; outputs tri-state when disabled
- Wide bus common-mode range (-7 V to +12 V)
- Robust, industry-standard 8-pin package options (e.g., SOP-8/DIP-8)
- Low power consumption (suitable for battery/energy-conscious designs)
Ideal for multi-node Industrial/automation networks requiring simple, reliable RS-485 communication.

Package

8-pin Plastic DIP (PDIP) package.

Pinout

- Pin count: 8 pins (8-pin package such as DIP-8/SO-8).
- Function: Low-power RS-485/RS-422 transceiver (half-duplex). DI converts to differential A/B when DE is asserted; RO provides receiver data with RE controlling the receiver; A/B are the differential bus lines; Vcc and GND provide power.

Manufacturer

- Manufacturer: Maxim Integrated (the MAX485CPA is a Maxim Integrated part; it’s now part of Analog Devices after the acquisition).
- What kind of company: A semiconductor company specializing in analog and mixed-signal integrated circuits (now a business unit within Analog Devices).

Application

- Industrial automation and PLC networks
- Building automation (HVAC, lighting, security)
- Data acquisition and remote sensors
- Energy metering and smart‑grid devices
- Motor controllers and point-to-point/multi‑point RS‑485 links
- Embedded systems in harsh environments

Equivalent

Common equivalents (RS-485 half‑duplex, 8-pin, 5V):
- Analog Devices ADM485
- Texas Instruments SN65HVD178 / SN65HVD178A
- STMicroelectronics ST485 / ST485E
- Maxim Integrated MAX3485 (and MAX485 family)
- Renesas/Intersil SP3485
- ON Semiconductor NCV485
Any of these can typically substitute MAX485CPA in related designs, depending on pinout and spec requirements.

Versand

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