SN74SSTU32864EZKER

Specialty Logic Overview

The SN74SSTU32864EZKER 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 edge-controlled circuits optimized for unterminated DIMM loads. It includes LVCMOS control and RESET inputs, chip-select functionality, and latch-up performance exceeding 100 mA per JESD 78 Class II.

Specialty Logic Feature Summary

• Configurable as a 25-bit 1:1 or 14-bit 1:2 registered buffer
• Supports low-power standby and active operation via chip-select inputs
• Output edge-control circuitry minimizes switching noise in unterminated lines
• Pinout optimizes DDR2 DIMM PCB layout

Specialty Logic Applications

• DDR2 Registered DIMM (RDIMM) applications
• System memory buffering
• High-speed data bus registration

Specialty Logic Procurement Notes

Verify that the specific ZKE package variant matches the required footprint and thermal characteristics for the target design. Confirm that the ordering suffix corresponds to the tape and reel packaging format intended for automated assembly processes. Ensure compatibility with the system's voltage levels and signal integrity requirements before finalizing procurement.

Specialty Logic Selection Notes

Select this component when designing systems requiring SSTL_18 compatible registered buffering for high-speed memory interfaces. Consider its configurable pinout flexibility for optimizing board space and trace routing. Evaluate the power consumption specifications against system thermal constraints, particularly regarding dynamic operating current during high-frequency clocking scenarios.

Specialty Logic Part Context

This part belongs to the SN74SSTV logic series by Texas Instruments, specifically engineered for synchronous transfer logic applications. It is part of the Widebus+ portfolio, which focuses on providing high-density, high-performance buffering solutions for modern computing architectures requiring precise timing and signal integrity management.

Specialty Logic Replacement Considerations

SN74SSTU32864E

Specialty Logic FAQ

How does the RESET input affect the differential input receivers?

When the RESET input is low, it disables the differential input receivers, resets all registers, and forces all outputs low.

What is the function of the DCS and CSR inputs?

The DCS and CSR inputs are chip-select inputs that monitor system state; when both are high, they gate the Qn outputs from changing state to minimize power consumption.