MAX33040EAKA+T

MAX33040EAKA+T is a Maxim Integrated RS-232 transceiver device (often offered as a multi‑channel RS-232 transceiver) designed to connect a microcontroller’s UART to RS-232 serial lines. It operates from a single supply and includes an on‑chip charge pump to generate the RS-232 voltage levels needed for signaling.
Typical features (may vary by variant):
- Single-supply operation and RS-232 drivers/receivers
- Integrated charge pumps for generating ± voltage levels
- Protection features such as ESD, undervoltage lockout, and thermal shutdown
- Competitive data rates and low quiescent current
- Optional extended temperature and automotive/special packaging variants
Suffix notes:
- E usually indicates extended temperature range
- A indicates automotive/industrial-grade options (variant dependent)
- +T indicates Tape-and-Reel packaging
Applications include connecting microcontrollers to serial ports on PCs, modems, industrial controllers, and other RS-232 peripherals. For exact channel count, voltage ranges, data rates, packaging, and temperature specs, consult the latest MAX33040E data sheet and product brief. If you need, I can pull specific specs from the datasheet.

Here are the key features of MAX33040EAKA+T (quad RS-232 transceiver):
- Quad RS-232 line drivers/receivers (4 tx/rx channels)
- Supply voltage range: 3.0 V to 5.5 V
- Data rate: up to about 1 Mbps
- On-chip charge pump to generate RS-232 voltage levels
- TTL/CMOS-compatible logic inputs
- Low power with shutdown/low-quiescent-current mode
- Protective features: RS-232 line ESD protection and short-circuit protection on outputs
- Wide operating temperature (typical -40°C to +125°C for automotive/industrial variants)
- Package: 16-pin, with Tape & Reel option (EAKA+T), RoHS-compliant
Note: exact electricals (e.g., precise data rate, ESD ratings) may vary by revision/lot; consult the datasheet for the most precise specs.

MAX33040EAKA+T is in a 20-pin TSSOP (RoHS-compliant) package, with Tape & Reel (T) packaging.

Pin count: 20 pins (20-pin package).
Function: Quad RS-232 transceiver (4 independent channels) with an on‑chip charge pump. It provides 4 TTL/CMOS-side inputs (T_IN, R_OUT) and 4 RS-232-side outputs/inputs (T_OUT, R_IN) to translate between TTL/CMOS logic levels and RS-232 voltage levels.

- Manufacturer: Maxim Integrated (the MAX series brand), now part of Analog Devices.
- What kind of company: A fabless semiconductor company that designs and sells analog and mixed-signal integrated circuits.

Quad, low-power RS-232 transceiver. Applications: Industrial and automotive serial interfaces; embedded systems needing multiple RS-232 channels; MCU/DTE/DCE links (modems, POS terminals, instrumentation); telecom/network equipment and telemetry/automation systems.

There isn’t an exact pin-for-pin cross for MAX33040EAKA+T. For close substitutes, consider:
- Non-isolated 4-channel RS-232/422/485 transceivers from TI (e.g., SN65HVDx/SN65HVD2x) and Analog Devices’ ADM24x/ADM248x families.
- Isolated options from Analog Devices (ADuM/isoRS232 series) if isolation is needed.
Please specify your supply (3.3V/5V), number of channels, and isolation requirement for a precise cross-reference.