MAX13444EASA+T

Drivers, Receivers, Transceivers Overview

The MAX13444EASA+T is a half-duplex RS-485 and J1708 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +5V supply (4.75V to 5.25V) and features ±80V fault protection on the A and B bus lines. The device supports data rates up to 250kbps with enhanced slew-rate limiting to minimize EMI. It includes true fail-safe receiver inputs, hot-swap capability on the RE pin, and ±15kV ESD protection. The component is housed in an 8-pin SO package and is specified for operation over the automotive temperature range of -40°C to +125°C.

Drivers, Receivers, Transceivers Feature Summary

• Integrated ±80V fault protection on differential bus lines eliminates the need for external protection components.
• Enhanced slew-rate limiting reduces electromagnetic interference and signal reflections for error-free transmission.
• Hot-swap circuitry on the receiver enable input prevents false transitions during board insertion or initialization.
• True fail-safe receiver inputs guarantee a logic-high output when inputs are open, shorted, or idle.

Drivers, Receivers, Transceivers Applications

• J1708 compliant truck and trailer communication networks
• Industrial network systems requiring robust fault tolerance
• HVAC control systems operating in harsh electrical environments

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm tape-and-reel packaging and lead-free compliance. Confirm that the automotive temperature grade matches the design requirements. Cross-reference the part number with authorized distributors to ensure authenticity and traceability before finalizing procurement orders.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring J1708 protocol support alongside standard RS-485 compatibility. The reduced slew rate makes it suitable for longer cable runs where EMI reduction is critical. Ensure the system design accommodates the half-duplex architecture and utilizes the dedicated shutdown mode for power optimization.

Drivers, Receivers, Transceivers Part Context

This device belongs to the MAX1344xE family of fault-protected transceivers. It shares the same physical footprint and thermal characteristics as the MAX13442E and MAX13443E. The primary distinction lies in its specific input configuration optimized for J1708 dominant/recessive states while maintaining full RS-485 interoperability.

Drivers, Receivers, Transceivers Replacement Considerations

The MAX13442EASA+T serves as a functional alternative for standard RS-485 applications lacking J1708 requirements. Verify pinout compatibility and ensure the replacement supports the required ±80V fault protection level if used in high-voltage industrial environments.

Drivers, Receivers, Transceivers FAQ

How does the MAX13444E handle hot-swap conditions?

The device features hot-swap circuitry specifically on the RE pin. This internal structure holds the receiver in a disabled state during power-up or board insertion to prevent data bus disturbances caused by voltage transients.

What is the purpose of the enhanced slew-rate limiting?

The reduced slew rate minimizes electromagnetic interference (EMI) and reduces signal reflections caused by improperly terminated cables, allowing for error-free data transmission at speeds up to 250kbps.

Does the device support J1708 protocols?

Yes, the MAX13444E is designed to support both RS-485 and SAE J1708 protocols, making it suitable for heavy-duty vehicle and trailer communication networks.