LTC2856IDD-1#PBF

Drivers, Receivers, Transceivers Overview

The LTC2856IDD-1#PBF is a low-power, half-duplex RS485/RS422 transceiver manufactured by Analog Devices. It operates on a single 4.5V to 5.5V supply and supports maximum data rates of 20Mbps. The device features enhanced ESD protection capable of withstanding ±15kV (HBM) without latchup or damage. It includes a failsafe receiver that guarantees a high output state during floating or shorted input conditions. The driver maintains high output impedance when disabled or unpowered. Key electrical parameters include a maximum shutdown current of 5µA for C/I grades, a typical receive mode current of 900µA, and thermal shutdown protection. It is housed in an 8-lead DFN package.

Drivers, Receivers, Transceivers Feature Summary

• Enhanced ESD protection withstands ±15kV HBM without latchup
• Failsafe receiver guarantees logic-high output under fault conditions
• Driver outputs maintain high impedance when disabled or unpowered
• Thermal shutdown and current limiting protect against excessive power dissipation

Drivers, Receivers, Transceivers Applications

• Industrial communication networks requiring robust fault tolerance
• Backplane transceivers in embedded systems
• Level translation between different voltage domains
• Low EMI applications using slew-rate limited variants

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix IDD-1 corresponds to the Industrial temperature range (-40°C to 85°C) and 20Mbps data rate as defined in the manufacturer's selection guide. Confirm the package type matches the required PCB footprint. Ensure compatibility with system voltage levels before integration.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring half-duplex communication with high noise immunity. The one-eighth unit load receiver allows up to 256 nodes per bus. Consider the H-grade variant if operation above 85°C is required. Verify that the 20Mbps speed meets the system timing constraints compared to the lower-speed slew-limited options.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC285x family of low-power RS485/RS422 transceivers. The 'LTC2856' designation indicates a half-duplex configuration with enable pins. The 'I' suffix denotes the industrial temperature grade, while 'DD' specifies the 8-lead DFN package. The '-1' suffix identifies the 20Mbps speed variant within this package and grade combination.

Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes within the same family include LTC2856ID-1#PBF (Commercial grade) or LTC2856HD-1#PBF (High-temp grade). Cross-family replacements like LTC2876 require verification of pinout and protocol compatibility.