SN74SSTVF16857VR

Specialty Logic Overview

The SN74SSTVF16857VR is a 14-bit registered buffer designed for 2.3-V to 2.7-V VCC operation, operating within the Widebus family. It features SSTL_2 compatible data inputs and outputs that meet Class I specifications. The device utilizes differential clock inputs (CLK and CLK) for data registration at the crossing of rising and falling edges. Outputs are edge-controlled circuits optimized for unterminated DIMM loads to minimize switching noise. It supports low-power standby operation via an LVCMOS RESET input.

Specialty Logic Feature Summary

• Edge-controlled output circuitry minimizes switching noise in unterminated DIMM loads
• Differential clock inputs register data at the crossing of CLK high and CLK low transitions
• LVCMOS RESET input disables receivers, resets registers, and forces outputs low
• Flow-through architecture optimizes PCB layout

Specialty Logic Applications

• PC1600, PC2100, and PC2700 planar RDIMMs
• PC3200 DDR memory modules
• Registered buffers for high-speed data buses

Specialty Logic Procurement Notes

Verify the specific ordering suffix VR against the manufacturer's current product availability status. Confirm the package type TVSOP-48 matches the target design constraints. Ensure compliance with RoHS and lead-free requirements as specified in the eco-plan documentation. Check for any recent production changes or lifecycle updates before finalizing procurement plans.

Specialty Logic Selection Notes

Select this component when designing systems requiring 14-bit registered buffering with SSTL_2 compatibility. It is suitable for applications needing edge-controlled outputs to reduce noise on unterminated loads. Verify that the supply voltage range of 2.3 V to 2.7 V aligns with the system power rails. Consider the flow-through architecture for simplified PCB routing compared to pipelined alternatives.

Specialty Logic Part Context

This device belongs to Texas Instruments' Widebus family of logic components. It is functionally compatible with the JEDEC standard SSTV16857 but offers improved simultaneous switching performance. The part is manufactured using CMOS technology and is intended for commercial temperature ranges from 0°C to 70°C.

Specialty Logic Replacement Considerations

SN74SSTVF16857GR is a pin-compatible alternative available in a TSSOP-48 package.

Specialty Logic FAQ

How does the RESET input affect the device operation?

When RESET is low, differential input receivers are disabled, all registers are reset, and all outputs are forced low. This allows undriven inputs during low-power standby.

What are the input voltage levels for the data pins?

Data inputs support SSTL_2 switching levels, defined by VREF ± 310 mV for AC conditions and VREF ± 150 mV for DC conditions.