MAX3085EESA

MAX3085EESA is a Maxim RS-232 transceiver (single-channel) that interfaces a UART/TTL/CMOS bus to RS-232 lines. It provides one driver and one receiver, converting logic-level signals to the characteristic RS-232 voltage swing and back, typically from a single supply.
Key points:
- On‑chip generation of RS-232 voltages (charge pump) from a single 3–5.5 V supply.
- TTL/CMOS input/output compatibility for a UART.
- Common features include low power, protection/ESD, and suitable for embedded serial links.
- The EESA suffix indicates a specific package/temperature option (e.g., eight-pin package and extended-temp variant); verify exact details in the datasheet.
Typical use:
- Microcontroller serial ports to RS-232 devices (PCs, modems, instruments).
Pinout overview (conceptual):
- TIN: TTL/CMOS input from MCU
- TOUT: RS-232 driver output
- RIN: RS-232 receiver input
- ROUT: TTL/CMOS receiver output to MCU
- VCC and GND
Always consult the latest datasheet for exact electrical specs, pinout, package, and any external capacitor requirements.

MAX3085EESA is a 1/8 unit‑load RS-485/RS-422 transceiver. Common cross‑references (3.0–5.5 V operation) include:
- TI SN65HVD178 / SN65HVD178B
- ST SP3485 / SP3485E
- ON Semiconductor MC3485 / MC3486
Note: verify exact pinout, drive/speed specs, and package when substituting.

MAX3085EESA features (concise):
- 1-channel RS-485/RS-422 transceiver in an 8-pin package (ESA)
- Single-supply operation: 3.3V–5.5V (RoHS-compliant)
- 1/8 unit-load on the bus (high bus loading tolerance)
- Differential RS-485/RS-422 driver and receiver
- Fail-safe receiver output (logic high if inputs are open/shorted or idle)
- Driver and receiver enable (tri-state) for easy bus contention handling
- Low quiescent current and suitable for low-power designs
- ESD protection on A/B bus pins
- Wide operating temperature: typical industrial range (-40°C to +125°C)
Note: For exact electrical specs (data rate, input thresholds, leakage, etc.), please refer to the official MAX3085EESA datasheet.

- Pin count: 8 pins (8-pin package, e.g., SOIC).
- Function: One-channel RS-485/RS-422 transceiver (half‑duplex) with driver and receiver. It has DI (driver input) and DE (driver enable) for driving the A/B bus, and RO (receiver output) with RE (receiver enable) for receiving from the A/B bus. Requires Vcc and GND.

Manufacturer: Maxim Integrated Products (now part of Analog Devices, Inc., ADI).
What kind of company: A global semiconductor company that designs and manufactures analog and mixed-signal integrated circuits (ICs), including interfaces, transceivers, power management, and other analog devices.

MAX3085EESA is a low‑power RS‑232 line driver/receiver for UART serial links. Common applications include:
- Microcontroller to PC/terminal serial interfaces
- Data acquisition, instrumentation, and test equipment
- Industrial automation, PLCs, and factory tooling
- Telecom/network gear with RS‑232 console/diagnostic ports
- Point‑of‑sale devices, printers, and barcode scanners
- Medical and laboratory instruments requiring RS‑232 ports
- Any 3V–5V system needing robust RS‑232 compatibility with low power consumption

16-pin TSSOP package.