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MAX488EPA

Name: MAX488EPA
Rating: 4.7 (12 reviews)

RS-485/RS-422 TRANSCVR

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Mfr。パート #MAX488EPA
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仕様

Supplier	Rochester Electronics, LLC
Package	Bulk
ProductStatus	Obsolete

概要

Description

The MAX488EPA is a low-power, half‑duplex RS-485/RS-422 transceiver from Maxim Integrated (now part of Analog Devices). It combines a differential line driver and receiver for robust multi‑point serial communication on a single 5V supply. Key features include DI/RO data pins, separate DE (driver enable) and /RE (receiver enable) controls, and a failsafe receiver that guarantees RO goes high when the bus is idle, open, or shorted. It also provides protection suitable for industrial use (ESD/short‑circuit protections) with low quiescent current. The EPA suffix denotes a specific packaging/ordering variant (and temperature range) of the MAX488 family. Typical applications: industrial automation, building controls, PLCs, and other RS‑485/RS‑422 networks requiring reliable multi‑point communication.

Features

MAX488EPA features (concise):
- Single-channel RS-485/RS-422 transceiver (8-pin package)
- One driver and one receiver (half‑duplex)
- 5V operation; low quiescent current
- 1/8 unit load on the bus; supports multi-drop networks
- Data rate up to about 2.5 Mbps
- Differential inputs/outputs with failsafe receiver (RO goes high with open/short idle lines)
- 3-state outputs; DE and RE control for driver/receiver enable
- Wide bus common-mode range (-7V to +12V)
- ESD protection on bus pins
- Industrial temperature range (typical: -40°C to +85°C)
Notes: For exact electrical specs (timings, current, allowable loads) refer to the MAX488EPA datasheet.

Package

The MAX488EPA is supplied in a 16-pin plastic DIP (PDIP) package (300 mil). Check the datasheet for exact dimensions and available alternative package variants.

Pinout

- Pin count: 8 pins (8‑lead package, e.g., PDIP/SO).
- Function (summary): MAX488EPA is a single driver/single receiver RS-485/RS-422 transceiver.
- Pinout (typical 8‑pin numbering):
1. RO — Receiver output
2. /RE — Receiver enable (active low)
3. DE — Driver enable
4. DI — Driver input
5. GND — Ground
6. A — Noninverting bus terminal
7. B — Inverting bus terminal
8. VCC — Power supply
(Use the datasheet for exact electrical specifications and package options.)

Manufacturer

The MAX488EPA is manufactured by Maxim Integrated (now part of Analog Devices, Inc.). Maxim Integrated is an American semiconductor company that designs and supplies analog and mixed-signal integrated circuits (power management, interface transceivers, data converters, and signal-conditioning ICs); its product lines were integrated into Analog Devices after ADI acquired Maxim in 2021.

Application

Applications: Industrial automation and control (PLCs, motor drives, sensors/actuators) using RS-485/RS-422 networks; Building automation (HVAC, lighting, security); Data acquisition and instrumentation systems requiring robust, long-distance communication; Smart metering and energy-management networks; Any multipoint/point-to-point RS-485 networks needing long cable runs, noise immunity, and fault protection in harsh environments.

Equivalent

Equivalent RS‑485/RS‑422 transceivers include: Maxim/MAXIM MAX485/MAX487, TI SN75176B (and SN65HVD family), Analog Devices ADM485, Linear/Analog LTC485, and STMicro ST485. Verify pinout, supply voltage, speed, fail‑safe and package before substitution.