MAX3223EIDBR

MAX3223EIDBR is a Maxim Integrated RS-232 transceiver. It provides one or more RS-232 drivers and receivers to interface TTL/CMOS logic with RS-232 serial ports, translating logic-level signals to RS-232 voltage levels and vice versa. The device operates from a single 5V supply and uses an on-chip charge-pump to generate the required RS-232 voltage swings (typically around ±6V to ±7V) from capacitors you add externally. It’s designed for low external components, robust data signaling, and protection on the RS-232 lines. The EIDBR suffix denotes the package and temperature/ RoHS options (industrial temperature range, RoHS-compliant packaging). Typical applications include microcontroller–to–PC serial links, embedded systems, and USB-to-serial adapters where multiple RS-232 channels are needed in a compact package. Pinout generally covers VCC, GND, multiple T_IN/T_OUT and R_IN/R_OUT signals, depending on the exact channel count of the device.

Equivalent RS-232 transceivers (3-channel) from other vendors:
- Analog Devices ADM3223
- Texas Instruments UCC3223
- Renesas/Intersil ISL3223
- Exar SP3223
Note: check exact voltage range, drive strength, and packaging to ensure pinout compatibility.

Here are concise features of MAX3223EIDBR (typical per datasheet):
- 3-channel RS-232 transceiver: three drivers and three receivers
- Single-supply operation: 3.0 V to 5.5 V
- On-chip charge-pump to generate RS-232 levels (about ±6 V)
- Data rate: up to ~250 kbps per channel
- External charge-pump capacitors required (typically four 0.1 µF to 1 µF caps)
- TTL/CMOS-compatible logic inputs; RS-232 compliant outputs
- ESD protection on RS-232 I/O lines
- Temperature range: extended version typical in -40°C to +85°C
- Package: 16-pin lead-free SOIC (EIDBR)
Note: Refer to the exact datasheet for precise electrical specs and capacitors.

- Pin count: 16 pins (16-pin package)
- Function: Dual RS-232 transceiver with two drivers and two receivers; converts UART/TTL level signals to RS-232 levels and RS-232 inputs back to TTL/CMOS, powered from a single supply (typical 3.3V or 5V) using an internal charge pump to generate the RS-232 voltages.

Manufacturer: Maxim Integrated (now part of Analog Devices, Inc.).
What kind of company: Maxim Integrated is a fabless semiconductor company that designs and markets analog and mixed‑signal integrated circuits. Analog Devices, the parent company after the acquisition, is a multinational semiconductor company specializing in analog, mixed‑signal, and DSP ICs.

- Three-channel RS-232 transceiver (TTL/CMOS to RS-232 and back) for embedded systems
- Interfaces microcontrollers to RS-232 peripherals: PCs, laptops, modems, serial printers
- Industrial automation, instrumentation, data logging, telemetry
- Point-of-Sale terminals and related peripherals
- Networking equipment with console/management ports
- Test and measurement equipment
- Any system needing multiple RS-232 interfaces from a single device

20-pin TSSOP package (lead-free/RoHS compliant).