74HC7403D,512

Overview

The NXP USA Inc. 74HC7403D,512 is a high-speed Si-gate CMOS expandable First-In First-Out (FIFO) memory organized as 64 words by 4 bits. It features separate controls for shift-in and shift-out operations, allowing independent synchronous and asynchronous data transfers. The device includes a master-reset input, an output enable input, and status flags indicating data-in-ready and data-out-ready states. It operates within a supply voltage range of 2.0 V to 6.0 V and supports ambient temperatures from -40 °C to +125 °C.

Feature Summary

• Supports synchronous or asynchronous operation with guaranteed 15 MHz data-rate
• Features 3-state outputs and readily expandable word and bit dimensions
• Includes clamp diodes on inputs to interface with voltages exceeding VCC
• Provides ESD protection exceeding 2000 V according to JESD22-A114F

Applications

• High-speed disc or tape controller
• Communications buffer

Procurement Notes

Verify the specific ordering suffix '512' against official NXP documentation to confirm package type and availability. Ensure compatibility with JEDEC standard JESD7A requirements. Confirm temperature range specifications match application needs. Check for any recent product discontinuation notices or lifecycle changes directly from the manufacturer.

Selection Notes

Select this component when a compact FIFO solution with independent read/write control is required. Consider the HC series for CMOS logic levels and wide voltage operation. Evaluate expansion capabilities if larger memory depth is needed. Verify pinout arrangement for board layout efficiency and ensure ESD protection meets system standards.

Part Context

This part belongs to the 74HC/HCT7403 family of expandable FIFO registers manufactured by NXP Semiconductors. It is designed for high-speed applications requiring reliable data buffering. The SO16 package provides a compact footprint suitable for dense circuit designs. The device complies with industry standards for CMOS logic performance and reliability.

Replacement Considerations

Check for direct substitutes like 74HCT7403D if TTL-level inputs are preferred. Verify pin compatibility and electrical characteristics before swapping. Consult NXP documentation for alternative packages or updated revisions.