LS7184N

Overview

The LS7184N is a CMOS quadrature clock converter designed to interface incremental encoders with digital logic. It converts optical or magnetic encoder signals applied to A and B inputs into a single clock signal and an Up/Down direction control output. This architecture allows direct connection to standard up/down counters for precise position tracking. The device supports x1, x2, and x4 resolution modes and features programmable output pulse widths ranging from 200ns to 140µs. It operates on a +3V to +5.5V supply and maintains TTL and low voltage CMOS compatible I/O levels.

Feature Summary

• Converts quadrature encoder signals into separate clock and direction outputs
• Supports multiple resolution modes including x1, x2, and x4
• Features programmable output pulse width for flexible timing control

Applications

• Interface incremental encoders to up/down counters
• Interface rotary encoders to digital potentiometers

Procurement Notes

Verify the manufacturer designation carefully, as the component originates from LSI Computer Systems. Confirm the package type matches the N suffix specification. Ensure the operating voltage range aligns with the system requirements before integration.

Selection Notes

Select this component when a separate direction signal is required rather than up/down pulses. Compare against the LS7183 if pulse-based counting is preferred. Verify that the input signal characteristics match the CMOS compatibility requirements of the device.

Part Context

The LS7184N belongs to the LS7183/LS7184 family of quadrature clock converters produced by LSI Computer Systems. These devices are engineered for motion control applications requiring reliable signal conversion from optical or magnetic sensors to digital processing units.

Replacement Considerations

The LS7183 serves as a functional alternative within the same family, though it provides Up/Down clock pulses instead of a separate direction line. Verify pinout compatibility and logic level requirements before substitution.