MAX3222EEUP+T

MAX3222EEUP+T is a dual RS-232 transceiver from Maxim (now Analog Devices). It provides two RS-232 drivers and two receivers to connect TTL/CMOS logic to RS-232 devices (PCs, modems, etc.). It runs from a single supply (typical 3.3–5.5 V) and uses an on‑chip charge pump to generate the RS-232 voltage levels (approximately ±6 V) from that supply, eliminating the need for a separate RS-232 power source. The +T suffix indicates tape-and-reel packaging; EEU denotes RoHS-compliant, lead-free packaging. It is compact (8-pin package) and suitable for microcontroller interfaces requiring robust, standard-compliant serial signaling. For exact electrical specs (data rate, voltage levels, quirks), consult the datasheet.

Equivalent devices to MAX3222EEUP+T (2-channel RS-232 transceiver) include:
- TI SP3232E/SP3232
- Analog Devices ADM322X family
- Onsemi NCV322X
- STMicroelectronics SP3232/ST232 family
- Classic MAX232/MAX232A as substitutes in some layouts (check voltage, drive levels, and pinout).

Here are the key features of MAX3222EEUP+T (RS-232 transceiver):
- Dual RS-232 transceivers: two drivers and two receivers
- Single-supply operation: 3.0 V to 5.5 V (no dedicated negative supply required)
- External charge-pump capacitors: requires four 0.1 µF capacitors
- True RS-232 level outputs and TTL/CMOS-compatible inputs
- High-voltage RS-232 signaling with standard compliance (typical ±6 V to ±7 V swings)
- Suitable for common baud rates up to 1 Mbps (RS-232 compatible)
- ESD protection on I/O pins; robust to typical interfacing environments
- Temperature range options include extended-temp version (-40°C to +85°C for E grade)
- Package: small 16-pin, RoHS-compliant (MSOP/SSOP) with Tape & Reel variant (+T)
Note: Verify exact electrical specs and pinout in the latest datasheet for your exact package/revision.

- Pin count: 16 pins (SSOP/TSSOP-16 package).
- Function: Dual RS-232 transceiver (two drivers and two receivers). Converts TTL/CMOS logic to RS-232 levels and RS-232 levels back to TTL, using an external charge-pump capacitor network.

- Manufacturer: Maxim Integrated Products (now part of Analog Devices, Inc.)
- What kind of company: A global semiconductor company specializing in analog and mixed-signal integrated circuits (signal processing, interfaces, data conversion, etc.).

MAX3222EEUP+T is a 2-driver/2-receiver RS-232 transceiver that converts TTL/CMOS UART signals to RS-232 levels. Typical application areas:
- Embedded systems linking microcontrollers to RS-232 devices (PC serial ports, modems, terminals)
- Industrial equipment (PLCs, instrumentation, data loggers, test and measurement gear)
- Point-of-sale and printing interfaces
- Any 3.3V/5V system requiring robust, low-power RS-232 communication over short to moderate cable lengths

It’s a 16‑pin surface‑mount package (typical TSSOP‑16/SOIC‑16). The +T suffix denotes Tape & Reel packaging.