QS72235-25J

Specialized ICS Overview

The QS72235-25J is a synchronous FIFO manufactured by Quality Semiconductor. It features a memory organization of 2K x 18 bits, providing a total capacity of 36 kilobits. The device operates with a cycle time of 25 nanoseconds and supports a supply voltage range from 4.5 V to 5.5 V. It utilizes CMOS technology and is housed in a PLCC-68 package. The component includes standard synchronous control signals for data input and output operations.

Specialized ICS Feature Summary

• Synchronous FIFO architecture with 2K x 18 bit organization
• 25 ns cycle time for high-speed data buffering
• CMOS technology with 4.5 V to 5.5 V operating voltage
• PLCC-68 surface mount package

Specialized ICS Applications

• Data buffering between asynchronous system domains
• High-speed interface bridging in communication equipment
• Temporary storage in digital signal processing systems

Specialized ICS Procurement Notes

Verify the manufacturer designation as Quality Semiconductor or its predecessor IDT, as part numbers may carry legacy prefixes. Confirm the specific suffix 'J' corresponds to the PLCC-68 package variant. Check for end-of-life status or obsolescence notices, as older synchronous FIFOs are frequently discontinued. Ensure compatibility with existing board footprints for the 68-pin plastic leaded chip carrier.

Specialized ICS Selection Notes

Select this component when a 18-bit wide synchronous buffer is required. The 25 ns speed class suits moderate-to-high frequency applications. Compare against the 72235LB25J series for potential pin-compatible alternatives if different access times or package options are needed. Verify that the 5V logic levels match the system's I/O requirements.

Specialized ICS Part Context

This part belongs to the QS72235 family of synchronous FIFOs. It shares architectural similarities with the IDT72235 series, often indicating a cross-manufacturer equivalence. The device serves as a specialized memory IC within the broader category of static RAM and buffer solutions.

Specialized ICS Replacement Considerations

The IDT72235L25J8 is a documented equivalent offering identical 2Kx18 organization and 25ns performance in a similar LCC-68 package. Verify pinout compatibility before substitution.