MAX233EPP

MAX233EPP is a Maxim/Analog Devices RS-232 transceiver. It provides two TTL/CMOS-to-RS-232 drivers and two RS-232 receivers, allowing a microcontroller or UART to communicate with a PC or RS-232 device.
Key points:
- Function: level-shifts between logic signals (TTL/CMOS) and RS-232 voltage levels.
- Architecture: two transmitters and two receivers (two data channels).
- Power/charge pump: uses an internal voltage doubler/inverter to generate RS-232 levels from a single supply (no external RS-232 supply needed); requires a few small external capacitors for the charge pump.
- Package: available in the EPP package variant (compact, with standard Maxim pinout and decoupling considerations).
- Benefits: simple interface to serial ports, low external component count, suitable for embedded systems needing RS-232 connectivity.
- Typical specs: supports standard RS-232 data rates (hundreds of kbit/s range); operates from typical 3.3–5V supplies; check datasheet for exact voltage, current, and baud-rate limits.
Applications: microcontroller-to-RS-232 bridges, modems, data loggers, serial communication peripherals.
For precise electrical characteristics and pinout, consult the MAX233EPP datasheet.

Here are the typical features of MAX233EPP (RS-232 transceiver family):
- Dual RS-232 transceiver: 2 drivers and 2 receivers
- Single-supply operation from 3.0 V to 5.5 V
- Internal charge-pump with external capacitors to generate RS-232 voltage levels
- Fully RS-232 compliant outputs (typical ±6 V swing)
- TTL/CMOS-compatible logic inputs with standard thresholds
- 3-state outputs for easy bus sharing and control
- Supports standard RS-232 data rates (hundreds of kbps range)
- Low quiescent current; suitable for portable applications
- ESD protection on all pins; robust short-circuit protection
- Industrial temperature range (typical -40°C to +85°C)
- Available in compact EPP package option for small- footprint designs
Note: Check the exact datasheet for pinout, exact voltage ranges, and max data-rate specs for your package variant.

MAX233EPP is in a 16-pin Exposed Pad Plastic Package (EPP), essentially a SO-16 style package with an exposed pad for heat dissipation.

- Pin count: 16 pins (SO-16/DIP-16 variants).
- Function: Dual RS-232 transmitter/receiver transceiver with on‑chip charge pump (two drivers and two receivers). Converts TTL/CMOS logic levels to RS-232 levels and RS-232 levels back to TTL/CMOS.

Manufacturer: Maxim Integrated Products (now part of Analog Devices).
What kind of company: An American semiconductor company that designs and sells analog and mixed-signal integrated circuits (traditionally fabless, now part of Analog Devices).

MAX233EPP is a dual RS-232 transceiver. Applications include:
- Embedded systems and microcontroller serial interfaces
- PC/modem serial ports and DB9 console connections
- Industrial control, instrumentation, and data acquisition gear
- Test and measurement equipment
- Point-of-sale devices
- Telecom/network equipment
- Automotive diagnostic tools
(Converts TTL/CMOS UART to RS-232 levels.)

Equivalents (2-channel RS-232 transceivers with charge pumps):
- STMicroelectronics ST232
- Analog Devices ADM232
- Exar SP232
- Microchip MCP2321
- Maxim MAX3232 (same family)