DP8429VX-70

Controllers Overview

The DP8429VX-70 is a Dynamic RAM (DRAM) controller integrated circuit manufactured by National Semiconductor. It utilizes bipolar technology and is housed in a 68-pin Quad Flat Pack (PQCC68) package, also identified as 68-LCC (J-Lead). The device operates within a supply voltage range of 4.5V to 5.5V and supports an operating temperature range of 0°C to 70°C (TA). It is designed for managing DRAM memory systems.

Controllers Feature Summary

• Functions as a dedicated controller for Dynamic RAM (DRAM) memory architectures.
• Built using bipolar semiconductor technology for signal processing.

Controllers Applications

• Dynamic RAM memory system control
• Computer memory subsystems

Controllers Procurement Notes

Verify the manufacturer designation as National Semiconductor, noting that this entity has undergone corporate restructuring. Confirm the specific package type is 68-PQCC or 68-LCC with J-leads. Ensure the electrical specifications match the required 4.5V to 5.5V supply range and commercial temperature limits before integration into designs.

Controllers Selection Notes

Select this component when a bipolar-based DRAM controller is required for legacy or specific industrial applications. Compare against CMOS alternatives like the DP8422 series if lower power consumption is critical. Verify compatibility with the target DRAM density and timing requirements supported by the controller's internal logic.

Controllers Part Context

This part belongs to the National Semiconductor family of memory controllers. It serves as a specialized interface between the system bus and DRAM modules. The 'VX' suffix typically denotes specific packaging or speed grades within the broader DP8429 product line, distinguishing it from other variants in terms of physical form factor or thermal characteristics.

Controllers Replacement Considerations

The DP8422ATV-25 is a documented alternative from the same manufacturer. Note that the DP8422 uses CMOS technology and an 84-pin PQCC package, requiring significant PCB layout and logic adaptation compared to the 68-pin bipolar DP8429VX-70.