MAX202EEWE

MAX202EEWE is a dual RS-232 transceiver from Maxim Integrated. It provides two drivers and two receivers, so a microcontroller’s UART can talk to RS-232 devices and receive data back. It runs from a single supply (3.0–5.5 V) and uses an on‑chip charge pump to generate RS-232 voltage levels (typically around ±6 V) from that supply. It supports UART data rates up to roughly 1 Mbps and is designed for low power, compact implementations. The suffix -EEWE designates a specific RoHS/compliant packaging and temperature variant; check the datasheet for exact package type and operating temperature range. Common uses include MCU-to-RS-232 connections for PCs, modems, GPS, and other serial peripherals. In short: a small, single‑supply, dual RS‑232 transceiver ideal for embedded serial interfaces.

Equivalent products (2-channel RS-232 transceivers) include:
- Analog Devices: ADM202/ADM232
- STMicroelectronics: SP3232, SP3232E
- National Semiconductor/TI: MC1488/MC1489
- Maxim: MAX232 (and related MAX3221/MAX3223)
Note: verify packaging, voltage, and pinout for exact compatibility (drop-in replacements may vary).

Key features of MAX202EEWE (RS-232 transceiver pair):
- Dual RS-232 transceivers: 2 drivers and 2 receivers
- Single-supply operation: 4.5 V to 5.5 V (typical 5 V)
- Internal charge pump generates RS-232 levels (≈ ±6 V) from the supply
- External charge-pump capacitors required (typical 1 µF)
- Data rate up to ~120 kbps (typical)
- TTL/CMOS-compatible inputs; RS-232 compliant outputs
- Wide temperature range: -40°C to +85°C
- 8-pin package (SOP/DIP variants)
- Low-power operation suitable for battery-powered apps
Note: Always check the latest datasheet for exact supply range, capacitor values, and performance figures.

- Pin count: 8 pins (8-pin package, e.g., SOIC/DIP-8).
- Function: Dual RS-232 transceiver (two drivers and two receivers). Converts TTL/CMOS logic levels to RS-232 voltage levels and RS-232 levels back to TTL/CMOS. Uses an internal charge-pump to generate the RS-232 voltages; typically powered from a single 4.5–5.5V supply and requires external charge-pump capacitors.

- Manufacturer: Maxim Integrated (now part of Analog Devices).
- What kind of company: A global semiconductor company that designs and manufactures analog and mixed-signal integrated circuits used in electronics.

MAX202EEWE is a dual RS-232 transceiver (two drivers and two receivers). Typical applications:
- Microcontroller/embedded systems needing an RS-232 interface
- Industrial control, instrumentation, data-acquisition, and test equipment
- Telecoms and networking gear with serial console/modem ports
- Point-of-sale terminals and peripherals (printers, external modems)
- Any device requiring robust, low-power RS-232 level shifting

MAX202EEWE comes in a 20-pin TSSOP package.