LTC2803CDHC#PBF

Drivers, Receivers, Transceivers Overview

The LTC2803CDHC#PBF is a dual RS-232 transceiver operating from a single supply voltage ranging from 1.8V to 5.5V. It integrates an internal DC-to-DC converter that generates the necessary positive and negative voltages for RS-232 signaling, eliminating the need for external charge pumps or inductors in some configurations, though a 10µH inductor is required for the switching regulator. The device provides two drivers and two receivers, supporting data rates up to 250kbps under standard TIA/EIA-232-F load conditions (3kΩ, 2.5nF). It features a separate logic supply pin (VL) allowing independent interfacing with various logic levels. The component is housed in a 16-lead, 5mm x 3mm plastic DFN package.

Drivers, Receivers, Transceivers Feature Summary

• Integrated DC-to-DC converter eliminates external high-voltage generation requirements
• Independent logic supply pin enables seamless level shifting between different voltage domains
• Low-power shutdown mode reduces current consumption to 1µA for battery conservation
• Robust protection against overload and short circuits on driver outputs

Drivers, Receivers, Transceivers Applications

• Battery-powered portable equipment requiring low standby current
• Industrial diagnostic ports and service interfaces
• Consumer electronics with limited power supply rails
• Computers and embedded systems needing RS-232 connectivity

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix matches the required temperature grade and packaging format. Confirm that the DFN-16 package dimensions align with the target PCB footprint. Ensure the selected variant supports the intended data rate and load capacitance for the application environment.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a dual-channel RS-232 interface is needed within a narrow physical footprint. It is suitable for designs where the main supply voltage varies between 1.8V and 5.5V. Consider the thermal performance of the exposed pad if operating near maximum temperature limits. Verify inductor selection for the integrated switching regulator to ensure stability.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC2801 family of single and dual RS-232 transceivers. It shares architectural similarities with the LTC2804 but offers a lower maximum data rate of 250kbps compared to the 1Mbps capability of the LTC2804. The CDHC suffix indicates the commercial temperature range and DFN-16 package configuration.

Drivers, Receivers, Transceivers Replacement Considerations

LTC2804CDHC#PBF offers identical pinout and package but supports higher data rates. LTC2803CGN-1#PBF provides the same functionality in a narrow SSOP-16 package. Verify electrical specifications and thermal characteristics before substituting.