SN74SSTU32864DZKER

Specialty Logic Overview

The SN74SSTU32864D is a 25-bit configurable registered buffer designed for 1.7-V to 1.9-V VCC operation. It supports SSTL_18 inputs and outputs, with LVCMOS control and RESET signals. The device operates from differential clock inputs (CLK and CLK), registering data at the crossing of rising CLK and falling CLK. It features chip-select inputs (DCS and CSR) to minimize system power consumption by gating output state changes. The package is an LFBGA-ZKE.

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 modes via chip-select inputs
• Output edge-control circuitry minimizes switching noise in unterminated lines
• RESET input disables differential receivers and forces all outputs low

Specialty Logic Applications

• DDR2 DIMM PCB layout optimization
• Driving SDRAM loads in memory modules
• System bus buffering with SSTL_18 signaling

Specialty Logic Procurement Notes

Verify the specific ordering suffix matches the required tape and reel packaging configuration. Confirm that the LFBGA-ZKE package dimensions align with the target PCB footprint design guidelines provided in the manufacturer's documentation. Ensure voltage levels strictly adhere to the recommended operating conditions for reliable functionality.

Specialty Logic Selection Notes

Select this component when designing systems requiring SSTL_18 compatible registered buffering with configurable pinout flexibility. Consider the differential clock requirements and the necessity for LVCMOS control logic compatibility. Evaluate the thermal impedance characteristics against the expected operating temperature range of 0°C to 70°C.

Specialty Logic Part Context

This device belongs to the Texas Instruments Widebus+ family of high-speed logic components. It is specifically engineered to address the signal integrity and power management challenges associated with modern memory interfaces. The configurable nature allows it to adapt to different board layout constraints while maintaining strict timing specifications.

Specialty Logic Replacement Considerations

SN74SSTU32864DGKER

Specialty Logic FAQ

How does the RESET input affect the differential input receivers?

When the RESET input is low, the differential input receivers are disabled, allowing undriven data, clock, and reference voltage inputs to float.

What is the function of the DCS and CSR inputs?

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