DS275S/T&R

Overview

The DS275S/T&R is a line-powered RS-232 transceiver in an 8-pin SOIC package. It operates on a logic supply (VCC) of 4.5V to 5.5V and a driver supply (VDRV) of 4.5V to 13V. The device features one receiver and one transmitter, with a typical static current of 10µA at VCC and 1.5µA at VDRV when idle. Dynamic currents reach up to 800µA for the driver and 100µA for logic during active transmission. Operating temperatures range from 0°C to +70°C.

Feature Summary

• Steals power from the receive signal line to minimize static current drain
• Compatible with standard RS-232-E signal levels
• Includes internal current-limiting circuitry for short-circuit protection

Applications

• Battery-backed handheld products
• Remote sensors
• Portable medical instruments

Procurement Notes

Verify the specific suffix against official documentation to confirm tape-and-reel packaging and RoHS compliance status. Confirm that the component meets all necessary environmental standards for the intended deployment environment before finalizing procurement decisions.

Selection Notes

Select this component for applications requiring ultra-low static power consumption where the RS-232 port remains connected. Ensure the system design allows the RXIN line to remain in a marking state to maximize power savings. Verify that cable lengths do not exceed ten feet to maintain signal integrity.

Part Context

This part belongs to the DS275 family of low-power CMOS RS-232 transceivers. It is designed specifically for battery-operated systems to reduce power drain compared to traditional charge-pump based interfaces. The SOIC variant provides a compact surface-mount solution for space-constrained designs.

Replacement Considerations

Check for direct pin-compatible alternatives within the same manufacturer's portfolio. Verify that any substitute maintains the same line-powered architecture and voltage specifications to ensure functional equivalence in existing designs.