74HC7403N,112

FIFOs Memory Overview

The NXP 74HC7403N,112 is a high-speed CMOS expandable First-In First-Out (FIFO) memory organized as 64 words by 4 bits. It operates within a supply voltage range of 2.0 V to 6.0 V and supports synchronous or asynchronous data transfers through independent shift-in and shift-out controls. The device features 3-state outputs, input clamp diodes for interfacing with voltages exceeding VCC, and status flags indicating data-in-ready and data-out-ready conditions. It complies with JEDEC standard JESD7A and offers ESD protection exceeding 2000 V HBM.

FIFOs Memory Feature Summary

• Expandable FIFO architecture supporting parallel and serial cascading
• Independent shift-in and shift-out controls for flexible operation
• 3-state outputs with dedicated output enable input
• Input clamp diodes enabling safe interfacing above VCC

FIFOs Memory Applications

• High-speed disc or tape controllers
• Communications buffers
• Data buffering in microprocessor systems

FIFOs Memory Procurement Notes

Verify the package type matches the required DIP16 configuration. Confirm the temperature range specification aligns with the application environment requirements. Ensure the logic family variant corresponds to the system voltage levels. Check for any specific ordering suffixes that may affect availability or documentation.

FIFOs Memory Selection Notes

Select this component when a 4-bit wide, 64-word deep FIFO buffer is required. Consider the HC series for CMOS compatibility and wider voltage ranges. Evaluate the need for 3-state outputs if bus sharing is necessary. Assess expansion requirements for larger memory depths using the provided cascade capabilities.

FIFOs Memory Part Context

This part belongs to the 74HC/HCT7403 family of FIFO registers manufactured by NXP Semiconductors. It is designed for high-speed data handling applications requiring reliable buffering between asynchronous or synchronous domains. The device is specified for industrial temperature ranges and meets strict reliability standards.

FIFOs Memory Replacement Considerations

Direct substitutes include the 74HCT7403N for TTL-compatible inputs. Other compatible variants within the same family may offer different package options or temperature ratings.