7205L20J

Overview

The Renesas Electronics Corporation 7205L20J is an asynchronous dual-port FIFO memory integrated circuit. It provides a storage capacity of 72K bits, organized as 8K words by 9 bits. The device supports unidirectional data transfer with a maximum access time of 20 nanoseconds and a data rate of 33.3 MHz. It operates on a single 5.0 V power supply within a voltage range of 4.5 V to 5.5 V. The component is housed in a 28-pin Plastic Dual In-line Package (PDIP) with a lead pitch of 2.54 mm. It functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Supports asynchronous and simultaneous read and write operations for multiprocessing applications
• Includes auto-retransmit capability allowing reset of the read pointer to its initial position
• Utilizes Full and Empty status flags to prevent data overflow and underflow conditions

Applications

• Multiprocessing systems requiring high-speed data buffering
• Rate buffer applications between components operating at different speeds
• Industrial control systems requiring reliable FIFO memory interfaces

Procurement Notes

Verify the specific package variant, as the 7205 series includes both 28-pin PDIP and 32-pin PLCC options. Confirm that the selected unit meets the required MIL-STD-883 Class B specifications if applicable. Ensure compatibility with existing system voltage levels and interface requirements before procurement.

Selection Notes

Select this component when a unidirectional asynchronous FIFO with 8K x 9 organization is required. It is suitable for designs needing low power consumption and ultra-high speed performance up to 20 ns access time. Consider alternative densities like the 7206 or 7207 if larger storage capacities are needed.

Part Context

The 7205L20J belongs to the IDT 720X family of high-speed asynchronous FIFO memories. This family is characterized by pin and function compatibility across various density variants. The 7205 specifically offers 72Kb capacity, distinguishing it from higher-density models while maintaining similar operational characteristics and interface standards.

Replacement Considerations

Compatible substitutes include other members of the 720X family such as the 7205L15 or 7205L20TP, provided the package type matches. Verify that replacement parts maintain the same 8K x 9 organization and 20 ns access time specifications.