MAX14770E is a half-duplex, Q35kV high ESD-protected transceiver for PROFIBUS-DP and RS-485 applications. In addition, it can be used for RS-422/V.11 communications. The MAX14770E is designed to meet IEC 61158-2, TIA/EIA-422-B, TIA/EIA-485-A, V.11, and X.27 standards. The MAX14770E operates from a +5V supply and has true fail-safe circuitry that guarantees a logic-high receive-r output when the receiver inputs are open or shorted. The MAX14770E features a 1/4 standard-unit load receiver input impedance, allowing up to 128 1/4 unit load transceivers on the bus. Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal-shutdown circuitry. The MAX14770E is available in 8-pin SO and tiny TDFN (3mm x 3mm) packages, and is specified over the extended (-40°C to +85°C) and automotive (-40°C to +125°C) temperature ranges. Applications: PROFIBUS-DP Networks, Industrial Fieldbuses, Motion Controllers, RS-485 Networks, Machine Encoders
The MAX14770E is a half‑duplex, high‑ESD protected transceiver for PROFIBUS‑DP and RS‑485 applications. It meets IEC 61158‑2, TIA/EIA‑422‑B, TIA/EIA‑485‑A, V.11 and other standards, offering a true fail‑safe receiver and driver with short‑circuit protection.
Key specifications include a supply voltage of +4.5 V to +5.5 V, a maximum data rate of 20 Mbps, operating temperature ranges from –40 °C to +125 °C, and robust ESD protection up to 10 kV (contact) and 420 kV (air‑gap). The device is offered in 8‑pin SO and tiny TDFN (3 mm × 3 mm) packages.
| Supply Voltage | +4.5 V to +5.5 V |
|---|---|
| Maximum Data Rate | 20 Mbps |
| Operating Temperature (SO package) | -40 °C to +85 °C |
| Operating Temperature (TDFN package) | -40 °C to +125 °C |
| ESD Protection (Contact) | 10 kV IEC 61000‑4‑2 |
| ESD Protection (Air‑Gap) | 420 kV IEC 61000‑4‑2 |
| Package Types | 8‑pin SO, 3 mm × 3 mm TDFN |
The device operates from a supply voltage of +4.5 V to +5.5 V.
It supports a maximum data rate of 20 Mbps.
The SO package operates from –40 °C to +85 °C, while the TDFN package operates from –40 °C to +125 °C.