MAX3094ECSE

MAX3094ECSE is a Maxim Integrated RS-232 transceiver IC (typically a quad/channel device) designed to connect microcontroller UARTs to RS-232 serial links. It provides TTL/CMOS logic interfaces on one side and RS-232 voltage levels on the other, enabling multiple independent serial ports from a single MCU.
Key points:
- On-chip charge pump generates RS-232 voltages from a single 3.0–5.5 V supply, avoiding external supplies for RS-232 levels.
- Four drivers and four receivers (multiport capability) for multiple UARTs.
- Includes protection features and is suitable for embedded, industrial, and networking applications requiring multiple RS-232 links.
- ECSE in the part number denotes the specific package/temperature grade.
For exact specs (pinout, data rates, supply ranges, capacitance, and protection details), refer to the MAX3094ECSE datasheet. If you need only one-channel RS-232 or different package options, consider related parts in the MAX309x family.

Equivalents depend on the MAX3094ECSE’s function (RS-232 vs RS-422/RS-485).
- RS-232 transceivers: TI MAX3221/3223; Analog Devices ADM232/ADM232A; ST SP3232/SP3234.
- RS-422/RS-485 transceivers: TI SN65HVDx family (e.g., SN65HVD178); TI SN75176; Analog Devices ADM2487 (isolated).
For exact cross-refs, please confirm the device’s interface and supply voltage or share the datasheet.

Here are typical features of the MAX3094ECSE RS-485/RS-422 transceiver:
- Quad RS-485/RS-422 transceiver (two drivers, two receivers)
- Single-supply operation (3.3V–5V)
- High-speed data-rate capability (per-channel, suitable for industrial buses)
- Separate driver-enable (DE) and receiver-enable (RE) with tri-state outputs
- Fail-safe receivers (guaranteed logic-high output with open/shorted/idle inputs)
- Differential signaling with wide bus fault and common-mode tolerance
- Robust ESD and fault protection on bus pins
- Low quiescent current for multi-drop/multi-node networks
Optional: packaging and exact electrical specs vary by revision; consult the current datasheet for pinout, exact voltage ranges, and performance numbers.

pin count: 20 pins (ECSE package)
function: Quad RS-232 transceiver (four drivers and four receivers) with an internal charge-pump to generate RS-232 voltage levels; converts TTL/CMOS logic to RS-232 and RS-232 back to TTL/CMOS.

- Manufacturer: Maxim Integrated.
- What kind of company: A semiconductor company that designs and manufactures analog and mixed-signal integrated circuits (now part of Analog Devices after Maxim’s acquisition).

Applications of MAX3094ECSE:
- Serial communications interfaces (RS-232/RS-485/RS-422) for microcontrollers and embedded systems
- Computers, printers, modems, POS terminals, and peripheral devices
- Industrial control and automation (PLCs, sensors, remote I/O)
- Networking and telecom equipment and data routers
- Test and measurement instruments and instrumentation gear
- Data-logging and other systems requiring reliable line drivers/receivers

16-pin SOIC (Small Outline IC) package.