26LS33PC

Overview

The AD26LS33PC is a quad differential line receiver manufactured by Rochester Electronics, LLC. It implements the RS-422 interface standard to provide reliable data transmission over long distances in noisy environments. The device features four independent receivers within a single package, supporting data rates up to 10 Mb/s. It operates with a supply voltage range of 4.75 V to 5.25 V and draws a maximum quiescent current of 70 mA. The component is housed in a 16-pin Ceramic Dual In-Line Package (CDIP), suitable for through-hole mounting. It is designed for industrial applications requiring robust signal integrity and noise immunity.

Feature Summary

• Quad differential input architecture for high noise immunity
• Compliance with RS-422 communication standards
• High-speed data reception capability up to 10 Mb/s
• Robust ceramic packaging for harsh environment reliability

Applications

• Industrial serial communication systems
• Multi-drop bus networks
• Data acquisition systems requiring noise-resistant interfaces
• Telecommunications equipment

Procurement Notes

Verify the specific manufacturer marking on the component body, as Rochester Electronics often sources surplus or discontinued parts from original manufacturers like AMD or Texas Instruments. Confirm the package type matches the required PCB footprint, specifically checking for the 16-pin CDIP configuration. Ensure the datasheet version aligns with the production lot to guarantee electrical parameter consistency. Request test reports if the application demands strict performance validation beyond standard specifications.

Selection Notes

Select this component when a quad RS-422 receiver is required for legacy or high-reliability designs. Compare against modern SOIC alternatives if board space is limited, noting that the CDIP package offers superior thermal and mechanical stability. Verify compatibility with existing logic levels and power supply constraints. Consider the availability of surface-mount equivalents if automated assembly is preferred over through-hole technology.

Part Context

Rochester Electronics specializes in sustaining obsolete semiconductor products. This part likely originates from a former manufacturer such as AMD or Texas Instruments. The company ensures continued availability through licensed production or inventory retention. Users should treat this as a replacement for end-of-life components rather than a new design-in option. Cross-reference with original manufacturer datasheets for detailed pinouts and absolute maximum ratings.

Replacement Considerations

Direct replacements include the AMD 26LS33PC or Texas Instruments SN75LS33AP. Verify pin compatibility and electrical characteristics before substitution. Surface-mount variants like the AM26LS33ACDR offer functional equivalence but require different footprints. Ensure the substitute supports the same RS-422 protocol and operating temperature range.