MAX253CUA+

The MAX253CUA+ is a Maxim RS-232 transceiver that provides two drivers and two receivers in a single package. It uses an internal charge-pump to generate RS-232 voltage levels from a single 3.0–5.5 V supply, enabling TTL/CMOS UARTs to talk to RS-232 devices without extra level shifters. The CUA+ suffix denotes RoHS-compliant packaging with a specified temperature range. Typical applications include embedded serial interfaces, modems, data loggers, and industrial equipment. Key points: low quiescent power, standard RS-232 signal levels, TTL/CMOS input compatibility, and protections (short-circuit/ESD) as supported by the device. For exact electrical characteristics, pinout, and packaging options, consult the MAX253CUA+ datasheet and product page.

MAX253CUA+ is a dual RS-232 transceiver with a charge pump. Equivalent parts include:
- MAX3232/MAX3232E (Maxim)
- SP3232 (Exar/Sipex)
- ADM232/ADM232A (Analog Devices)
- ST3232 (STMicroelectronics)
All are 2-driver/2-receiver RS-232 transceivers with onboard charge pumps and similar voltage ranges. Availability varies by package and temperature.

I don’t have the exact current datasheet handy for MAX253CUA+ tolist revision-specific details. Here are typical features of MAX253-class RS-232 transceivers (dual channel):
- Dual RS-232 transceiver (two drivers and two receivers)
- Operates from 3.0 V to 5.5 V
- Internal charge pump generates RS-232 levels (±5 to ±9 V typical)
- TTL/CMOS logic-level inputs
- Data rates up to around 1 Mbps (typical)
- External charge-pump capacitors required (often ~1 µF each)
- Low quiescent current; selectable/shutdown/power-down mode
- Short-circuit protection and thermal shutdown
- ESD/shot protection on RS-232 lines
- Available in small packages (e.g., SOIC or equivalent)
Note: Please check the exact MAX253CUA+ datasheet for precise specs, package options, and any revision-specific features.

MAX253CUA+ is a 16-pin device. It is a dual RS-232 transceiver (two drivers and two receivers) that uses an internal charge-pump to generate the RS-232 voltage levels from a single supply (typically 5 V). It requires external 0.1 µF capacitors for the charge pump.

Manufacturer: Maxim Integrated (now part of Analog Devices, Inc.). What kind of company: a fabless semiconductor company that designs and markets analog and mixed-signal integrated circuits (ICs).

MAX253CUA+ is a dual RS-232 transceiver. Typical application areas include:
- Embedded systems: microcontrollers to RS-232 devices
- Modems, printers, terminals, and PC peripherals
- Industrial automation: PLCs, sensors, data loggers
- Test, measurement, and lab instruments
- Point-of-sale terminals and peripherals
- Telecom/network equipment console ports
- Medical and automotive diagnostic tools using RS-232

16-pin small‑outline package (SOIC).