SSTV16859MTD

Specialty Logic Overview

The SSTV16859MTD is a dual output 13-bit register designed for DDR-1 memory modules, featuring SSTL-2 compatible I/O and an LVCMOS reset input. It operates at VDDQ of 2.3V to 2.7V with a maximum clock frequency of 200 MHz. Propagation delay from clock to output ranges from 1.1 ns to 2.8 ns. The device supports setup times of 0.75 ns (fast slew) or 0.9 ns (slow slew) and hold times of 0.75 ns or 0.9 ns respectively. Input capacitance is typically 3.2 pF. It is housed in a 64-lead TSSOP package.

Specialty Logic Feature Summary

• Dual output 13-bit register architecture compliant with DDR-I registered module specifications
• SSTL-2 compatible data inputs and outputs with differential clock inputs
• Asynchronous LVCMOS reset input that disables input comparators for low power mode
• Fabricated on advanced sub-micron CMOS process for operation below 3.6V

Specialty Logic Applications

• 184-pin DDR-1 memory modules
• 232-pin DDR-1 memory modules
• JEDEC DDR module register implementations

Specialty Logic Procurement Notes

Verify component authenticity through authorized distributors as the part is obsolete. Confirm package integrity for the 64-lead TSSOP form factor. Check datasheet revisions for any electrical characteristic updates. Ensure supply chain sources provide valid traceability documentation. Validate replacement options if new production units are unavailable.

Specialty Logic Selection Notes

Select this component for designs requiring SSTL-2 compatibility in DDR-1 environments. Ensure voltage levels match the 2.3V to 2.7V operating range. Verify timing constraints against the specified propagation delays and setup/hold times. Consider the differential clock input requirements for signal integrity. Evaluate the low power standby mode benefits during reset states.

Specialty Logic Part Context

The SSTV16859 belongs to the SSTV series of logic devices developed by Fairchild Semiconductor, now part of onsemi. This specific model addresses the signaling standards for early DDR memory architectures. It provides registered buffering capabilities essential for maintaining signal quality in high-speed memory interfaces.

Specialty Logic Replacement Considerations

Direct substitute: SN74SSTV16859DGGR (Texas Instruments). Similar substitute: SN74SSTVF16859GR (Texas Instruments).