QS72235-35TF

Specialized ICS Overview

The QS72235-35TF is a synchronous FIFO memory device manufactured by Quality Semiconductor. It features a storage capacity of 36K bits, organized as 2K words by 18 bits. The component supports a maximum data rate of 40MHz with an access time of 15ns. It operates within a supply voltage range of 4.5V to 5.5V and draws a maximum supply current of 60mA. The device is designed for unidirectional data transfer and includes programmable flag support. It is housed in a 64-TQFP package measuring 10x10mm and functions within a commercial temperature range of 0°C to 70°C.

Specialized ICS Feature Summary

• Synchronous FIFO architecture with 36K (2K x 18) bit organization
• High-speed operation supporting 40MHz clock frequency and 15ns access time
• Integrated programmable status flags for buffer management
• Unidirectional data bus directionality

Specialized ICS Applications

• Data buffering in high-speed digital signal processing systems
• Interface bridging between asynchronous logic blocks operating at different clock rates
• Temporary data storage in communication protocol converters

Specialized ICS Procurement Notes

Verify the specific manufacturer datasheet for the QS72235-35TF to confirm pinout compatibility and electrical characteristics against the target design requirements. Ensure that the 64-TQFP package dimensions align with the PCB footprint specifications. Confirm that the 4.5V to 5.5V supply voltage range matches the system power rails and that the 0°C to 70°C operating temperature range is sufficient for the intended environment.

Specialized ICS Selection Notes

Select this component when a synchronous interface is required for 18-bit wide data paths. The 2K depth provides adequate buffering for moderate throughput applications. Compare the 15ns access time against system timing constraints to ensure setup and hold times are met. Consider the 60mA maximum supply current for power budget calculations and thermal management requirements in the final assembly.

Specialized ICS Part Context

This part belongs to the QS72xxx series of synchronous FIFOs from Quality Semiconductor. These devices are designed to provide reliable data buffering in CMOS technology. The 72235 variant specifically offers 18-bit word width, distinguishing it from other members of the family that may offer 9-bit or 16-bit configurations. The 'TF' suffix typically denotes the TQFP package and bulk shipping configuration.

Specialized ICS Replacement Considerations

Direct replacements must match the 2K x 18 organization, synchronous interface, and 64-TQFP package. Verify that any substitute component maintains the same 4.5V to 5.5V supply voltage range and 15ns or faster access time. Check for pin-to-pin compatibility to avoid PCB redesign.