MAX3082ESA

MAX3082ESA is a Maxim Integrated RS-485/RS-422 transceiver. It provides a differential driver and receiver in an 8-pin package (ESA suffix denotes the specific package/temperature grade). It’s used to connect a microcontroller to a multi-point differential bus. Pinout basics: DI (driver input), DE (driver enable), RO (receiver output), RE (receiver enable), and A/B (differential bus). Features typically include low power, single-supply operation (5V; some versions support 3.3V), robust fail-safe (RO goes high if the bus is idle/open/shorted), and protection against ESD/short circuits. It supports both half-duplex RS-485 and RS-422 signaling, enabling multi-node networks. Typical applications: industrial control, building automation, and serial network interfaces. Operation basics: set DE high to transmit, low to receive; RE low to enable the receiver; bias the A/B bus per the network (fail-safe helps when idle). For exact electrical specs (voltage ranges, data rate, pin assignments), refer to the MAX3082ESA datasheet.

Equivalent products (dual RS-232 transceivers): Analog Devices ADM232; STMicroelectronics SP3232/ST3232; Maxim Integrated MAX232/MAX3232. These offer similar functionality; verify supply voltage (3.3V/5V), drive current, speed, and pinout to match MAX3082ESA.

Here are the typical features of the MAX3082ESA (dual RS-485/RS-422 transceiver):
- Dual transceiver: 2 drivers and 2 receivers
- Single-supply operation: 3.3V to 5.5V
- Data rate: up to about 10 Mbps on the RS-485/RS-422 bus
- 1/2 unit load per driver
- Fail-safe receivers: guaranteed high output when inputs are open, shorted, or idle
- 3-state enables for both drivers and receivers (independent control)
- Suitable for RS-485/RS-422 long‑line bus applications with robust protection
- Low power/low quiescent current (typical per-channel current is small)
- Industrial temperature range: typically -40°C to +85°C
- 8-pin package (ESA variant)
Note: exact figures (data rate, current, temperature range) can vary by revision; check the latest datasheet for precise specifications.

- Pin count: 16 pins (16-pin package, e.g., SO-16/TSSOP-16).
- Function: Dual RS-232 transceiver (two drivers, two receivers) that converts TTL/CMOS to RS-232 voltage levels and RS-232 to TTL/CMOS, using an on-chip charge pump to generate RS-232 voltages from a single 3V–5.5V supply.

- Manufacturer: Analog Devices, Inc. (ADI). The MAX3082ESA originated with Maxim Integrated and is now part of Analog Devices, which acquired Maxim in 2021.
- What kind of company: A multinational semiconductor company that designs and manufactures analog, mixed-signal, and DSP integrated circuits.

Common application areas for the MAX3082ESA:
- RS-232 level shifting for microcontrollers and embedded systems
- Serial data links in modems, printers, data loggers, and test equipment
- Industrial automation and process-control equipment requiring RS-232 interfaces
- Point-of-sale terminals and other consumer/enterprise peripherals
- Telecommunication and network equipment console ports
- Medical instrumentation with RS-232 data interfaces
Used wherever a microcontroller/DSP must communicate with RS-232 devices over short to medium distances.

8-pin SOIC (SOP-8) package, RoHS-compliant lead-free.