MAX3232EEWE

MAX3232EEWE is a Maxim/Analog Devices RS-232 transceiver. It provides two drivers and two receivers to connect a microcontroller’s TTL/CMOS logic to RS-232 devices (PCs, modems, etc.). It operates from a single 3.0–5.5 V supply and uses an on-chip charge pump with external capacitors to generate the required RS-232 voltage swings, so no separate ± voltage supply is needed. The part accepts standard logic inputs and outputs RS-232 levels, and vice versa. Typical features include: 2 drivers, 2 receivers; low quiescent current; external 0.1 µF capacitors for the charge pump; up to about 1 Mbps data rate; RoHS-compliant in a 16-pin package (e.g., SOIC/TSSOP). Applications include embedded systems and serial communication links between microcontrollers and PCs or other RS-232 devices.

Equivalent 2‑driver/2‑receiver RS‑232 transceivers to MAX3232EEWE:
- Analog Devices: ADM3232 (and ADM3222)
- STMicroelectronics: ST3232 (ST232 family)
- Texas Instruments: SP3232 (and SN75C3232 family)
Notes: variants exist with different voltages/package options; most operate from 3.0–5.5 V and include a charge pump like MAX3232.

Features of MAX3232EEWE (RS-232 transceiver)
- 2 RS-232 drivers and 2 receivers (2Tx/2Rx)
- Operates from a single supply: 3.0 V to 5.5 V
- Charge-pump based, external capacitors required (four caps)
- TTL/CMOS logic-side inputs; RS-232-level outputs
- Generates standard RS-232 voltage levels from a single supply
- Low quiescent current; suitable for battery-powered apps
- 8-pin package (DIP-8/SO-8), RoHS-compliant
- ESD/over-voltage protection on RS-232 pins; robust I/O protection
- Suitable for extended temperature range (-40°C to +85°C available on variants)

- Pin count: 16 pins (in standard packages for MAX3232).
- Function: Dual RS-232 transceiver (two drivers and two receivers) with a charge-pump to generate RS-232 voltage levels from a single supply. It converts TTL/CMOS inputs to RS-232 outputs and RS-232 inputs to TTL/CMOS outputs. Requires four external capacitors for the charge pump.

The MAX3232EEWE is manufactured by Analog Devices (the line originated with Maxim Integrated; Maxim is now part of Analog Devices after their acquisition).
Analog Devices is a multinational American semiconductor company that designs and manufactures analog, mixed-signal, and DSP (digital signal processing) integrated circuits.

MAX3232EEWE is a dual RS-232 transceiver (two drivers, two receivers) that converts TTL/CMOS UART levels to RS-232 and vice versa. Common applications:
- Embedded/microcontroller systems needing RS-232 interface (UART to PC/modem)
- Industrial automation (PLCs, data loggers, sensors)
- Networking/telecom equipment (console ports on routers/switches, modems)
- Point-of-Sale devices, printers, barcode scanners
- Medical/lab instruments with RS-232 I/O
- Test/measurement and data-acquisition gear
- Any internal RS-232 link in 5V (or 3.3V) logic systems

8-pin Small-Outline Integrated Circuit (SOIC, SO-8) package; RoHS lead-free variant.