CY74FCT480BTSOC

Parity Generators And Checkers Overview

The CY74FCT480BTSOC is a dual 8-bit parity generator/checker from the Texas Instruments FCT logic series, housed in a 24-pin SOIC package. It operates within a supply voltage range of 4.75 V to 5.25 V and supports an operating temperature range of -40°C to +85°C. The device features high drive capability with a maximum low-level output current of 64 mA and a high-level output current of 32 mA. Propagation delays are specified at a maximum of 6.1 ns for data inputs to outputs and up to 6.5 ns for control signals. It includes Ioff circuitry for partial-power-down support and provides ESD protection exceeding JESD 22 standards.

Parity Generators And Checkers Feature Summary

• Dual independent 8-bit parity generation and checking functions
• Open-drain active-low parity-error output for wired-OR expansion
• Ioff circuitry prevents backflow during partial-power-down mode
• Edge-rate control circuitry improves noise characteristics

Parity Generators And Checkers Applications

• Data integrity verification in digital communication systems
• Memory subsystem error detection circuits
• Expansion of word width parity checking via wired-OR connections
• High-speed logic interfaces requiring TTL compatibility

Parity Generators And Checkers Procurement Notes

Verify the specific ordering suffix 'SO' confirms the SOIC-24 package and tube packaging configuration. Confirm the 'B' speed grade corresponds to the 6.1 ns propagation delay specification. Ensure the component meets RoHS compliance requirements as indicated by the manufacturing data. Cross-reference the manufacturer part number against official Texas Instruments documentation to validate authenticity and production status.

Parity Generators And Checkers Selection Notes

Select this component when dual 8-bit parity processing is required within a single package. The FCT series offers compatibility with standard TTL input levels while providing CMOS drive strengths. Consider the open-drain error output if system architecture requires multiple devices to share a common error line. Verify that the 6.1 ns speed grade meets the timing constraints of the target application bus.

Parity Generators And Checkers Part Context

This device belongs to the CY74FCT480T family of high-speed logic integrated circuits. It is functionally compatible with F Logic standards and serves as a specialized solution for parity operations. The SOIC package variant provides surface-mount convenience for modern PCB designs while maintaining the electrical performance characteristics defined for the broader FCT product line.

Parity Generators And Checkers Replacement Considerations

CY74FCT480BTQCT (QSOP package)

Parity Generators And Checkers FAQ

How does the ERROR output facilitate system expansion?

The ERROR output is an open-drain active-low signal designed to be connected in a wired-OR configuration, allowing multiple CY74FCT480T devices to expand parity checking for larger word widths without increasing propagation delay.

What is the purpose of the Ioff circuitry in this device?

The Ioff circuitry disables the outputs when the device is powered down, preventing damaging current backflow through the device into the power supply rails of other active components.