Description

The ADM4851AR is a differential line transceiver that belongs to ADM4850-ADM4857 product series. It is suitable for high-speed data communication on multipoint bus transmission lines through half and full-duplex. The device complies with EIA Standards RS-485 and RS-422. It is designed for balanced data transmission and suitable for low power RS-485 applications, packet switching, industrial control, local area networks, DTE-DCE interfaces, and level translators.

Specifications and features

• EIA RS-485-/RS-422-compliant
• Data rate options:
  • ADM4850/ADM4854—115 kbps
  • ADM4851/ADM4855—500 kbps
  • ADM4852/ADM4856—2.5 Mbps
  • ADM4853/ADM4857—10 Mbps
• Half- and full-duplex options
• Reduced slew rates for low EMI
• True fail-safe receiver inputs
• 5 µA (maximum) supply current in shutdown mode
• Up to 256 transceivers on one bus
• Outputs high-z when disabled or powered off
• -7 V to +12 V bus common-mode range
• Thermal shutdown and short-circuit protection
• Pin-compatible with MAX308x
• Specified over the -40°C to +85°C temperature range
• Available in 8-lead SOIC and LFCSP packages

Application Scenarios

The ADM4851AR is commonly used in applications that require balanced data transmission, including low power RS-485 applications, packet switching, industrial control, local area networks, DTE-DCE interfaces, and level translators. It is especially suitable for EMI-sensitive systems due to its reduced slew rates.

Comparison

• Complies with EIA Standards RS-485 and RS-422
• Can be applied in both half- and full-duplex options
• Suitable for high-speed data communication on multipoint bus transmission lines
• Can accommodate up to 256 transceivers on one bus
• Has true fail-safe feature for receiver inputs to ensure a known state before communication begins
• Reduced slew rates to minimize EMI and data errors caused by reflections

• N/A