MAX3051ESA+T

MAX3051ESA+T is Maxim Integrated’s 8-pin, low‑power RS‑485/RS‑422 transceiver. It lets a microcontroller communicate over a differential RS‑485/RS‑422 bus, using a simple UART interface on the host side.
Key points
- Single‑supply operation (typically 3.0–5.5 V) with low quiescent current.
- Differential driver and receiver for high‑noise immunity; supports typical RS‑485/RS‑422 data rates (Mbps range).
- DE/RE control for driver and receiver (3‑state outputs possible).
- Failsafe receiver: guarantees a known logic level on open/shorted/bus‑idle conditions.
- Protection features such as ESD/bus fault tolerance and robust common‑mode range.
- Package: 8‑pin small outline (SOIC) with extended temperature grade; available in Tape & Reel packing.
Common uses
- Industrial automation, building control, remote sensors, and other microcontroller to RS‑485/RS‑422 links.
Note
- Check the exact electrical specs and pinout in the official datasheet for your variant.

I don’t have the exact datasheet in front of me, but the MAX3051ESA+T (MAX3051 family) typically offers:
- High-speed RS-485/RS-422 transceiver
- Data rate up to about 2 Mbps
- Wide supply range (3.0V–5.5V)
- 3-state driver and receiver enables
- Fail-safe receiver (guaranteed known output when inputs are open/shorted)
- 1/8 unit-load on the bus
- ESD protection on I/O
- Overcurrent/short-circuit protection
- Industrial/extended temperature options (ESA variants) and Tape & Reel packaging
For precise/default specs (exact data rate, voltage, temperature range, and pinout) please share the exact datasheet or confirm the device variant, and I’ll pull the exact feature list.

- Pin count: 8 pins (ESA in SOIC-8; tape & reel indicated by +T).
- Function: One-channel RS-485/RS-422 transceiver (transmitter and receiver) with TTL input/output (DI/RO) and DE/RE control for differential serial communication.

- Manufacturer: Maxim Integrated (Maxim Integrated Products, Inc.), now part of Analog Devices.
- What kind of company: A US-based semiconductor company that designs and sells analog and mixed-signal integrated circuits (fabless).

Application areas of MAX3051ESA+T (half-duplex RS-485/RS-422 transceiver):
- Industrial automation and control (RS-485/RS-422 networks)
- Telemetry, data acquisition, and remote sensing
- Building/home automation and energy metering
- Automotive instrumentation and diagnostics
- Remote terminals, modems, and embedded systems (e.g., POS, industrial PCs)
These use cases exploit robust, low-power serial communication in noisy or long-distance environments.

MAX3051ESA+T comes in a 16‑pin SSOP (SOIC‑16) package, Tape‑and‑Reel.