CY7C341B-25JC

Overview

The CY7C341B-25JC is a 192-macrocell MAX® EPLD manufactured by Cypress Semiconductor Corporation. It utilizes advanced 0.65-micron CMOS technology and features 8 dedicated inputs, 64 bidirectional I/O pins, and 384 expander product terms distributed across 12 Logic Array Blocks (LABs). The device operates within a commercial temperature range of 0°C to +70°C with a supply voltage of 5V ± 5%. Key electrical parameters include a maximum access time of 25 ns, a maximum register toggle frequency of 62.5 MHz, and a synchronous clock-to-output delay of 14 ns. It is housed in an 84-lead Plastic Leaded Chip Carrier (J83) package.

Feature Summary

• 192 macrocells organized into 12 LABs with 384 shared expander product terms
• Fixed-delay Programmable Interconnect Array (PIA) for predictable signal routing
• Programmable design security feature to protect EPROM data
• On-board logic test circuitry for functional verification

Applications

• Replacement for large amounts of 7400-series TTL logic
• Complex system controllers
• Multifunction chips requiring high density and speed

Procurement Notes

Verify the component manufacturer as Cypress Semiconductor Corporation, now part of Infineon Technologies. Confirm the specific ordering suffix 'JC' corresponds to the 84-lead Plastic Leaded Chip Carrier package and commercial temperature range. Ensure compatibility with 5V logic levels and check for RoHS compliance status if required by current manufacturing standards.

Selection Notes

Select the CY7C341B-25JC when a fixed propagation delay through the interconnect array is critical to avoid glitches. This model provides a 25 ns access time suitable for applications requiring up to 62.5 MHz toggle frequency. Consider the J83 plastic package for surface-mount assembly. Verify that the 8 dedicated inputs and 64 I/O pins meet the interface requirements of the target design.

Part Context

The CY7C341B belongs to the MAX® family of Erasable Programmable Logic Devices. It succeeds earlier iterations like the CY7C341, offering improved performance through 0.65-micron CMOS technology. The device architecture allows it to replace over 75 TTL devices, significantly reducing board space and part count while increasing system reliability.

Replacement Considerations

Direct pin-compatible replacements within the same family include the CY7C341B-35JC, which offers a slower 35 ns access time but shares the same package and pinout. Other variants such as CY7C341B-25HC or CY7C341B-25RC provide different packaging options (HLCC or PGA) with identical electrical characteristics.