CY74FCT480ATPC

Parity Generators And Checkers Overview

The CY74FCT480ATPC is a dual 8-bit parity generator/checker from the FCT logic series, housed in a 24-pin PDIP 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 7.5 ns for data inputs to outputs and 7.5 ns for control signals.

Parity Generators And Checkers Feature Summary

• Contains two independent 8-bit parity generators or checkers
• Features an open-drain active-low parity-error output for wired-OR expansion
• Includes Ioff circuitry to support partial-power-down mode operation
• Provides edge-rate control circuitry for improved noise characteristics

Parity Generators And Checkers Applications

• Odd-parity systems requiring word width expansion
• Data integrity verification in digital communication interfaces
• Memory subsystem error detection circuits

Parity Generators And Checkers Procurement Notes

Verify the specific suffix 'ATPC' corresponds to the 7.5 ns speed grade and industrial temperature range (-40°C to +85°C). Confirm the 24-pin PDIP packaging matches the target board layout requirements. Ensure compatibility with the required 5 V logic levels and check for RoHS compliance status on the final procurement order.

Parity Generators And Checkers Selection Notes

Select this component when dual 8-bit parity checking is required with high drive strength. The CY74FCT variant offers superior sink and source currents compared to the CY54FCT version. The open-drain ERROR output facilitates cascading multiple devices without additional logic gates. Verify that the system design accommodates the specific propagation delay limits defined for the A-speed grade.

Parity Generators And Checkers Part Context

This part belongs to the Texas Instruments 74FCT logic family, designed for high-speed CMOS applications. It is functionally compatible with F Logic standards. The device integrates specialized parity calculation logic alongside standard TTL-compatible input and output levels, serving as a dedicated solution for data validation tasks in complex digital systems.

Parity Generators And Checkers Replacement Considerations

CY74FCT480BTPC (15-unit tube, B-speed grade)

Parity Generators And Checkers FAQ

How does the ERROR output facilitate expansion?

The ERROR output is open-drain and active-low, allowing multiple devices to be connected via a wired-OR configuration to expand word width without increasing parity-checking time.

What is the purpose of the Ioff circuitry?

The Ioff circuitry disables the outputs when the device is powered down, preventing damaging current backflow through the device during partial-power-down operations.