MAX3225EEAP

MAX3225EEAP is a Maxim Integrated RS-232 transceiver (dual driver/receiver). It lets a microcontroller’s TTL/CMOS UART talk to RS-232 devices, providing two drivers and two receivers for full‑duplex communication. It operates from a single supply and uses a charge-pump to generate the RS‑232 voltage levels from that supply (external capacitors are typically required per the datasheet). The package variant (EEAP) indicates a specific packaging/temperature option. It’s commonly used to connect microcontrollers to PCs, modems, or other RS‑232 peripherals, offering low power and compact form factor. For exact electrical specs (voltage ranges, data rate, capacitor values, and power), consult the latest datasheet.

MAX3225EEAP is a 4-channel RS-232 transceiver with a 5 V supply. Equivalents from other vendors include:
- Analog Devices: ADM3221/ADM3223/ADM3232 family
- STMicroelectronics: SP3232/SP3232E family
- Exar/MaxLinear: SP3232 family
Note: exact pinout and voltage-range details vary by package; verify with the manufacturer’s datasheet and cross-reference tools (DigiKey/Mouser) for your package.

Here are the likely features of the MAX3225EEAP (dual RS-232 transceiver):
- Dual RS-232 transceiver: two drivers and two receivers
- Single-supply operation from 3.0V to 5.5V
- On-chip charge pump to generate RS-232 voltage levels (±6V typical)
- TTL/CMOS-compatible logic inputs; RS-232 level outputs
- Extended operating temperature: -40°C to +85°C
- Low quiescent current and low-power shutdown capability
- Built-in protection and ESD on I/O pins
- 8-pin package (AP suffix indicates packaging)
Note: for exact numbers (data rate, currents, and pinout), please refer to the official datasheet.

Pin count: 20 pins (SSOP/TSSOP-20).
Function: Dual RS-232 transceiver (two drivers and two receivers) with an on-chip charge pump to generate RS-232 voltage levels from a single supply.

- Manufacturer: Maxim Integrated (now part of Analog Devices).
- What kind of company: A semiconductor company that designs analog and mixed-signal integrated circuits; originally fabless (outsourced manufacturing). In 2021, Maxim was acquired by Analog Devices, a global leader in analog, mixed-signal, and DSP ICs.

- Microcontroller/MCU to PC or host RS-232 serial interfaces
- Modems, routers, switches, serial console ports
- Industrial control systems, PLCs, data-acquisition equipment
- Point-of-Sale terminals, printers, barcode scanners and peripherals
- Test equipment and lab instrumentation with RS-232 communication
- Embedded systems requiring a robust, single-supply RS-232 driver/receiver

8-pin small-outline package (SOIC-8), RoHS-compliant.