TMS45165-70DZ

Overview

The TMS45165-70DZ is a Fast Page Mode Dynamic Random Access Memory (DRAM) integrated circuit manufactured by Texas Instruments. It provides a memory density of 256K x 16 bits, offering a total storage capacity of 4 Megabits. The device features a 70 nanosecond access time, ensuring rapid data retrieval for system applications. It is constructed using CMOS technology to optimize power consumption and performance. The component is housed in a 40-pin Plastic Small Outline J-Lead (SOJ) package, designated as PDSO40, with an inch-based dimension of 0.400 inches.

Feature Summary

• Fast Page Mode operation for efficient sequential data access
• CMOS construction for low power dissipation
• High-density 256K x 16 bit organization

Applications

• Embedded memory systems requiring fast page mode access
• Industrial control units utilizing DRAM storage
• Consumer electronics devices needing compact memory solutions

Procurement Notes

Verify the specific suffix 'DZ' against the manufacturer's official documentation to confirm the exact package type and temperature range. Ensure compatibility with existing board layouts for the 40-pin SOJ form factor. Cross-reference the part number with authorized distributors to confirm authenticity and current production status, as legacy components may have limited availability or require careful handling during procurement.

Selection Notes

Select this component when a 256K x 16 bit DRAM configuration is required with a 70ns speed grade. The Fast Page Mode capability makes it suitable for applications where sequential read operations are frequent. Consider the physical constraints of the 40-pin SOJ package during PCB design. Verify that the system voltage levels and timing requirements align with the CMOS specifications provided in the official datasheet before finalizing the design.

Part Context

This part belongs to the Texas Instruments TMS4516x series of Fast Page DRAMs. These components were designed to provide high-density memory solutions in a compact footprint. The series typically includes variants with different access times and package options. The TMS45165-70DZ specifically denotes the 70ns speed variant in the plastic SOJ package, serving as a standard memory solution for mid-range computing and control applications from its era.

Replacement Considerations

Check for equivalents such as the TMS45165-70DGE, which shares similar electrical characteristics but may differ in package style. Verify pinout compatibility and electrical parameters before substitution. Consult official replacement guides to ensure functional equivalence in terms of speed, density, and interface requirements.