DS275S+

Overview

The DS275S+ is a line-powered RS-232 transceiver in an 8-pin SOIC package. It operates with a logic supply (VCC) of 4.5V to 5.5V and a driver supply (VDRV) of 4.5V to 13.0V. The device features one receiver and one transmitter, supporting data rates up to 20 kb/s. Static supply current ranges from 100 µA to 5 mA depending on the state. Operating temperature spans 0°C to +70°C. The receiver input threshold typically sits at 1.8V with 500mV hysteresis.

Feature Summary

• Transmitter steals power from the receive signal line during negative states to minimize static current drain.
• Compatible with RS-232-E signals for low-power serial communication.
• Variable transmitter level capability ranging from +5 to +12 volts.

Applications

• Battery-backed systems
• Laptop computers
• Remote sensors
• Portable medical instruments

Procurement Notes

Verify component authenticity through authorized channels as the product lifecycle status is End-of-Life. Confirm that the ordering suffix indicates RoHS compliance if required by assembly specifications. Ensure the 8-pin SOIC package matches the design footprint before procurement.

Selection Notes

Select this component for applications requiring ultra-low static current when connected to an RS-232 port. Ensure VDRV is maintained greater than or equal to VCC. Verify that cable lengths remain under 10 feet to maintain signal integrity within RS-232 compatibility limits.

Part Context

The DS275S+ belongs to the DS275 series of line-powered RS-232 transceivers manufactured by Analog Devices / Maxim Integrated. It provides a low-cost interface solution tailored for battery-operated handheld products where power conservation is critical.

Replacement Considerations

DS275SN is a PDIP variant of the same functional core. DS276SN offers similar line-powered operation but may differ in specific electrical characteristics. Verify pinout and voltage requirements when substituting.