CY7C344B-15JC

Overview

The CY7C344B-15JC is a 32-macrocell MAX® EPLD manufactured by Cypress Semiconductor Corporation, utilizing advanced 0.65-micron CMOS EPROM technology. It features 8 dedicated inputs and 16 bidirectional I/O pins connected to a single Logic Array Block (LAB) containing 64 expander product terms. The device offers a maximum access time of 15 ns and supports a maximum register toggle frequency of 83.3 MHz in the commercial temperature range (-0°C to +70°C). It operates at a supply voltage of 5V ±5% and is housed in a 28-lead Plastic Leaded Chip Carrier (J64 package).

Feature Summary

• 32 macrocells with 64 expander product terms within one LAB.
• Advanced 0.65-micron CMOS EPROM technology for high performance.
• 8 dedicated inputs and 16 bidirectional I/O pins.
• Maximum access time of 15 ns with 83.3 MHz synchronous toggle frequency.

Applications

• Complex state machine implementation.
• Registered logic circuits.
• Combinatorial glue logic replacement for TTL/74HC solutions.

Procurement Notes

Verify the ordering suffix 'JC' corresponds to the J64 28-Lead Plastic Leaded Chip Carrier package as specified in the selection guide. Confirm the operating range requirement matches the Commercial specification (-0°C to +70°C) associated with this part number variant. Ensure power supply decoupling capacitors are applied per design recommendations.

Selection Notes

Select the CY7C344B-15JC when a 15 ns propagation delay is required for synchronous or asynchronous logic designs. This model provides the highest speed option among the 344B series variants. Consider the 28-pin PLCC package constraints and ensure sufficient I/O pin availability for the target application architecture.

Part Context

This component belongs to the CY7C344B family of 32-Macrocell MAX® EPLDs. It serves as a high-density replacement for discrete TTL, 74HC, and custom logic components. The device integrates all logic functions into a single LAB, allowing designers to implement complex digital systems without multiple chips.

Replacement Considerations

Direct pin-compatible replacements include other speed grades within the same package, such as CY7C344B-20JC or CY7C344B-25JC. Verify timing requirements before substituting slower variants. Cross-family replacements require schematic review due to architectural differences.