MAX3488ESA

MAX3488ESA is a Maxim/Analog Devices RS-485/RS-422 transceiver. It provides a single differential driver/receiver pair to connect a microcontroller or processor to a multi-point RS-485 or RS-422 bus.
Key points:
- One-channel differential transceiver (A/B bus, DI input, RO output) with control pins DE (driver enable) and RE (receiver enable).
- Low-power operation with a simple 5V (typical) supply; extended-temp/lead-free variant indicated by the ESA suffix (check datasheet for exact package and temp rating).
- Features like a failsafe receiver (RO goes high when the bus is idle/open/shorted) and protection on the bus lines (ESD/bus fault protection).
- Suitable for industrial, building automation, and sensor-network uses requiring robust, multi-point serial communication.
How to use: connect DI to MCU TX, RO to MCU RX, DE/RE as needed, and A/B to the differential bus. For exact electrical specs and pinout, consult the datasheet.

Equivalent RS-485/RS-422 transceivers to MAX3488ESA include:
- TI SN65HVD178A/B
- ST SP3485 (and SP3482)
- Analog Devices ADM485
- Microchip MCP2551
- NXP PCA82C251 (and PCA82C252)
These offer similar half‑duplex RS‑485/RS‑422 interfaces in comparable voltage ranges and packaging.

Here are the typical features of the MAX3488ESA RS-485/RS-422 transceiver:
- 2-wire, half-duplex RS-485/RS-422 communication on A/B lines
- Separate DE (driver enable) and RE (receiver enable) for easy MCU control
- 3-state outputs with enable control
- Low-power CMOS interface with suitable operation from 3.0V to 5.5V
- High-speed data rate suitable for industrial networks (up to several Mbps)
- Fail-safe receiver: RO outputs a logic-high when the bus is idle, open, or shorted
- 8-pin package (ESA suffix indicates packaging) and RoHS compliant
- Bus-pin ESD protection for robust operation in noisy environments
- Industrial temperature range (typical -40°C to +85°C)
- Wide receiver input/common-mode range compatible with RS-485 networks
Note: exact numbers (data rate, unit-load, current, etc.) vary by revision; consult the datasheet for precise specs.

- Pin count: 8 pins (8-pin package, e.g., SOIC-8).
- Function: RS-485/RS-422 transceiver (single driver, single receiver) with DE and /RE control. Interfaces a microcontroller’s DI/RO to the differential A/B bus (A/B pins) for bidirectional RS-485/422 communication.

- Manufacturer: Maxim Integrated (now part of Analog Devices).
- Company type: A semiconductor company that designs and sells analog and mixed-signal integrated circuits (originally fabless; now integrated into Analog Devices).

- Industrial automation and PLC fieldbus networks (multi-point RS-485)
- Building automation (HVAC, lighting, security systems)
- Remote telemetry and data acquisition
- Instrumentation and test equipment needing differential serial links
- Embedded systems and microcontroller networking requiring long-distance RS-485/RS-422 communication

8-pin Small Outline IC (SOIC) package; RoHS-compliant.