SN65C189DR

Analog Switches - Special Purpose Overview

The SN65C189DR is a quadruple low-power line receiver manufactured by Texas Instruments, designed for RS-232 interface applications. It operates with a fixed supply voltage of 5 V and supports data rates up to 1 Mb/s. The device integrates four receivers within a single SOIC-14 package, drawing a typical operating supply current of 700 uA. It functions reliably across an industrial temperature range from 0°C to +70°C and includes built-in ESD protection mechanisms.

Analog Switches - Special Purpose Feature Summary

• Integrates four independent low-power receivers for serial communication
• Supports high-speed data transmission at rates up to 1 Mb/s
• Operates exclusively on a 5 V power supply rail
• Includes electrostatic discharge (ESD) protection circuitry

Analog Switches - Special Purpose Applications

• RS-232 serial communication interfaces
• Industrial control systems requiring multiple receiver channels
• Data acquisition equipment
• Telecommunications terminal units

Analog Switches - Special Purpose Procurement Notes

Verify the specific ordering suffix against official Texas Instruments documentation to confirm package type and tape-and-reel specifications. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before finalizing procurement orders.

Analog Switches - Special Purpose Selection Notes

Select this component when a design requires four distinct RS-232 input channels without integrated drivers. The SN65C189DR is suitable for systems needing low quiescent current consumption while maintaining compatibility with standard 5 V logic levels. Consider the SOIC-14 footprint constraints during PCB layout planning to ensure adequate thermal dissipation and signal integrity for high-speed data reception.

Analog Switches - Special Purpose Part Context

This device belongs to the SNx5C189 series of RS-232 interface components produced by Texas Instruments. It serves as a specialized receiver-only solution within the broader family of serial communication ICs. The SN65C189 variant specifically targets commercial temperature ranges, distinguishing it from military-grade counterparts that may offer extended operational limits.

Analog Switches - Special Purpose Replacement Considerations

The SN75C189ADR is documented as a manufacturer-recommended alternative. Verify pinout compatibility and electrical parameter alignment before substitution.