• The MAX13410E-MAX13415E are half-duplex, RS-485/RS-422 transceivers with AutoDirection control and an integrated low-dropout (LDO) regulator.
• These devices save board space and reduce cost by eliminating external components.
• The MAX13410E-MAX13415E employ AutoDirection control to eliminate the need for a driver-enable control signal and, consequently, the optocouplers typically required for control-line isolation. The integration of an LDO regulator further saves space and cost.
• The MAX13410E-MAX13415E are ideal for isolated-metering, automotive, and industrial applications.

Maxim Integrated Products introduced the MAX13410E-MAX13415E half-duplex, RS-485/RS-422 transceivers with an integrated low-dropout (LDO) regulator. These transceivers utilize Maxim's proprietary AutoDirection control architecture to automatically enable the driver when transmitting data. AutoDirection control thus eliminates the need for a driver-enable control signal, as well as the optocouplers typically required for control-line isolation. To further save space and reduce cost, the integrated LDO regulator features a wide, +6V to +28V supply range, eliminating the need to regulate isolated power supplies. The MAX13410E-MAX13415E are ideal for isolated-metering, automotive, and industrial applications.

These robust transceivers offer ±15kV ESD protection (Human Body Model) and thermal-shutdown protection. Additionally, they feature a 1/8-unit load-receiver input impedance, allowing up to 256 transceivers on the bus. The MAX13410E/MAX13412E/MAX13414E* have slew-rate-limited drivers that reduce EMI for error-free transmission up to 500kbps in environments with high levels of radiated noise. The MAX13411E/MAX13413E/MAX13415E are not slew-rate limited and, therefore, allow data rates up to 16Mbps.

The MAX13410E–MAX13415E internal LDO generates a 5V ±10% power supply that is used to power its internal circuitry. The MAX13412E–MAX13415E bring the 5V to an output VREG that allows the user to power additional external circuitry with up to 20mA to further reduce external components. The MAX13410E/MAX13411E do not have a 5V output and come in industry-compatible pinouts. This allows easy replacement in existing designs.
These devices also include fail-safe circuitry (MAX13410E/MAX13411E/MAX13414E/ MAX13415E only), guaranteeing a logic high receiver output when the receiver inputs are open or shorted. The receiver outputs a logic-high when the transmitter on the terminated bus is disabled (high impedance).

The MAX13412E/MAX13413E feature Maxim’s proprietary AutoDirection control. This architecture eliminates the need for the DE and RE control signals. In isolated applications, this reduces the cost and size of the system by reducing the number of optical isolators required.

The MAX13410E/MAX13412E/MAX13414E feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free transmission up to 500kbps. The MAX13411E/MAX13413E/MAX13415E are not slew-rate limited, allowing transmit speeds up to 16Mbps.

The MAX13410E–MAX13415E are available in an 8-pin SO package with an exposed paddle to improve power dissipation, and and are fully specified to operate over the extended -40°C to +85°C temperature range.