LS7166A-S

Counter Dividers Overview

The LS7166A-S is a CMOS, 24-bit quadrature counter manufactured by LSI Computer Systems. It operates within a voltage range of 3V to 5.5V and supports count frequencies from DC to 25MHz. The device features an 8-bit three-state I/O bus for microprocessor communication and control. It includes internal control registers for mode configuration and a readable status register. The component is housed in a 24-pin TSSOP package.

Counter Dividers Feature Summary

• Supports programmable operating modes including Up/Down, Binary, BCD, 24 Hour Clock, Divide-by-N, x1/x2/x4 Quadrature, and Single-Cycle.
• Features a 24-bit comparator for pre-set count comparison.
• Provides instantaneous hardware-based control functions and status indication through discrete inputs and outputs.

Counter Dividers Applications

• Position sensing systems requiring quadrature decoding
• Motor speed and direction monitoring
• Industrial automation counters

Counter Dividers Procurement Notes

Verify the manufacturer designation carefully, as LSI Computer Systems is distinct from later entities using similar acronyms. Confirm the specific suffix 'S' corresponds to the SOIC or TSSOP package variant required for your PCB layout. Ensure compatibility with 3V to 5.5V logic levels and check for end-of-life status given the component's age.

Counter Dividers Selection Notes

Select this component when a dedicated hardware quadrature decoder is needed to offload counting tasks from a main processor. It is suitable for applications requiring direct interface with incremental encoders. Consider the 25MHz maximum frequency limit against your application's signal speed requirements.

Counter Dividers Part Context

The LS7166 series serves as a specialized interface between rotary or linear encoders and digital control systems. It simplifies the design of motion control circuits by handling high-speed counting and direction detection independently. The device reduces software overhead by providing real-time position data via its parallel bus interface.

Counter Dividers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.