MAX3223CPWR

MAX3223CPWR is a Maxim RS-232 transceiver. It provides three independent driver/receiver pairs to connect a microcontroller’s UART to RS-232 ports. It converts TTL/CMOS logic levels to RS-232 voltage levels and back, using an on‑chip charge pump to generate the required RS-232 swings from a single supply. The CPWR suffix denotes Pb-free, RoHS-compliant packaging. Features typically include operation from a 3.0–5.5 V supply, low quiescent current, and built‑in protections suitable for serial interfacing. It’s ideal for multi‑port serial interfaces, PC/serial adapters, and embedded systems needing multiple RS-232 channels. For exact pinout, voltage ranges, data rates, and electrical characteristics, consult the MAX3223 datasheet and the specific package variant.

Key features of MAX3223CPWR (RS-232 transceiver):
- Dual RS-232 driver/receiver: 2 TX, 2 RX
- Single-supply operation: 3.0 V to 5.5 V
- Internal charge-pump to generate RS-232 voltage levels; requires four external capacitors
- TTL/CMOS logic inputs; RS-232 compliant outputs
- Data rate suitable for typical RS-232 applications (per channel)
- Low quiescent current with available shutdown mode
- Wide operating temperature: -40°C to +85°C
- 8-pin package, RoHS-compliant (CPWR)
Note: Always consult the latest datasheet for exact electrical specs and capacitor values.

Pin count: 20 pins (package: typically 20-pin TSSOP/SOIC).
Function: Triple RS-232 transceiver — provides 3 UART driver outputs and 3 UART receiver inputs, converting between TTL/CMOS UART levels and RS-232 voltage levels (with an internal charge-pump requiring external capacitors).

MAX3223CPWR is manufactured by Maxim Integrated. Maxim Integrated is a semiconductor company that designs and markets analog and mixed-signal integrated circuits (e.g., interfaces, data converters, op-amps, power management). It was acquired by Analog Devices and now operates as the Maxim Integrated business unit within ADI.

Applications of MAX3223CPWR include:
- Embedded systems: MCU/CPU to RS-232 devices (UART interfaces).
- Data communication equipment: modems, serial consoles for routers/switches.
- Industrial automation: PLCs, sensors, and controllers requiring RS-232 I/O.
- Point-of-sale peripherals: printers, barcode scanners, cash registers.
- Test and measurement: oscilloscopes, data loggers, lab instruments with RS-232 ports.
- Networking gear: console ports and other management interfaces.
It’s a 2-channel RS-232 transceiver suitable for 3.3V/5V systems.

8-pin Small Outline package: SOIC-8 (SOP-8), RoHS-compliant.