QS7203-20P

FIFOs Memory Overview

The QS7203-20P is a 2K x 9 asynchronous FIFO memory device manufactured by Quality Semiconductor. It features a 20 ns access time and operates on a single 5.0 V power supply. The component utilizes CMOS technology with TTL-compatible I/O levels, supporting a maximum clock frequency of 33 MHz. It contains 18,432 bits of storage organized into 2,048 words of 9 bits each. The device is housed in a 28-pin Plastic Dual In-line Package (PDIP) with a lead count of 28. It is designed for uni-directional data transfer applications.

FIFOs Memory Feature Summary

• Supports asynchronous operation with independent read and write clocks
• Provides TTL-compatible input and output interfaces for direct logic integration
• Utilizes CMOS technology to ensure low standby current consumption
• Offers dedicated full and empty status flags for flow control management

FIFOs Memory Applications

• Data buffering between microprocessors and peripheral devices
• Interface bridging between systems operating at different clock speeds
• Serial-to-parallel conversion circuits
• High-speed data acquisition systems requiring temporary storage

FIFOs Memory Procurement Notes

Verify the specific manufacturer source, as this part number has been associated with both Integrated Device Technology (IDT) and Quality Semiconductor. Confirm that the PDIP28 package matches your board layout requirements. Check for RoHS compliance status, as older versions may not meet current environmental standards. Ensure the 5V logic level compatibility aligns with your system design before procurement.

FIFOs Memory Selection Notes

Select this component when a 2K x 9 depth is required for asynchronous data buffering. The 20 ns speed class suits moderate-frequency applications up to 33 MHz. Consider the PDIP28 package only if through-hole mounting is necessary; surface-mount equivalents like the SOIC variant exist for automated assembly. Verify voltage tolerance and temperature range specifications against your operational environment constraints.

FIFOs Memory Part Context

This device belongs to the 7203 family of asynchronous FIFOs, which provides non-volatile-like data retention during power cycles via static RAM architecture. The family typically includes variants with different access times (e.g., 15ns, 25ns) and packages. The QS prefix often denotes Quality Semiconductor manufacturing, while IDT was a previous producer of similar 7203 series parts.

FIFOs Memory Replacement Considerations

Direct substitutes include other 2Kx9 asynchronous FIFOs with comparable 20ns access times. Variants such as the QS7203-25P offer slower speeds but identical pinouts. Surface-mount replacements like the QS7203-20SOB provide the same functionality in an SOIC package. Always verify pin compatibility and electrical characteristics before substitution.