SN74SSTU32864NMJR

Specialty Logic Overview

The SN74SSTU32864NMJR is a 25-bit configurable registered buffer from the Texas Instruments Widebus+ family, designed for 1.7-V to 1.9-V VCC operation. It supports SSTL_18 inputs and outputs with differential clock inputs (CLK and CLK). The device operates at a maximum clock frequency of 500 MHz and features propagation delays ranging from 1.4 ns to 2.7 ns. It includes chip-select inputs (DCS and CSR) for low-power active mode and an asynchronous reset input. The component is housed in a 96-pin NFBGA package.

Specialty Logic Feature Summary

• Configurable as a 25-bit 1:1 or 14-bit 1:2 registered buffer to optimize DDR-II DIMM PCB layout
• Output edge-control circuitry minimizes switching noise in unterminated lines
• Chip-select inputs gate data outputs to minimize system power consumption
• Supports low-power standby and active modes via RESET and DCS/CSR control

Specialty Logic Applications

• DDR-II DIMM memory systems
• High-speed digital signal buffering
• Registered buffer applications requiring SSTL_18 compatibility

Specialty Logic Procurement Notes

Verify the specific ordering suffix NMJR corresponds to the NFBGA-96 package and tape-and-reel packaging configuration. Confirm that the RoHS compliance status matches project requirements. Ensure the operating temperature range of 0°C to 70°C aligns with the intended environmental conditions. Check for any recent lifecycle updates regarding production availability.

Specialty Logic Selection Notes

Select this component when designing DDR-II DIMM circuits requiring a single device to drive nine SDRAM loads in a 1:1 configuration. Consider the 1:2 pinout option if two devices per DIMM are acceptable to drive eighteen SDRAM loads. Evaluate the need for differential clock inputs and SSTL_18 interface compatibility. Assess power consumption requirements against the available low-power active and standby modes.

Specialty Logic Part Context

This part belongs to the Texas Instruments Widebus+ family of logic ICs. It is specifically engineered for high-density memory applications, optimizing pin assignments for DDR-II DIMM layouts. The device integrates registered buffering capabilities with advanced power management features suitable for modern computing architectures.

Specialty Logic Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.