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SSTUA32866
General description
The SSTUA32866 is a 1.8 V configurable register specifically designed for use on DDR2 memory modules requiring a parity checking function. It is defined in accordance with the JEDEC standard for the SSTUA32866 registered buffer. The register is configurable (using configuration pins C0 and C1) to two topologies: 25-bit 1 : 1 or 14-bit 1 : 2, and in the latter configuration can be designated as Register A or Register B on the DIMM.
The SSTUA32866 accepts a parity bit from the memory controller on its parity bit (PAR_IN) input, compares it with the data received on the DIMM-independent D-inputs and indicates whether a parity error has occurred on its open-drain QERR pin (active LOW). The convention is even parity, that is, valid parity is defined as an even number of ones across the DIMM-independent data inputs combined with the parity input bit.
The SSTUA32866 is packaged in a 96-ball, 6 x 16 grid, 0.8 mm ball pitch LFBGA package (13.5 mm x 5.5 mm).
Features
- Configurable register supporting DDR2 up to 667 MT/s Registered DIMM applications
- Configurable to 25-bit 1 : 1 mode or 14-bit 1 : 2 mode
- Controlled output impedance drivers enable optimal signal integrity and speed
- Exceeds JESD82-7 speed performance (1.8 ns max. single-bit switching propagation delay; 2.0 ns max. mass-switching)
- Supports up to 450 MHz clock frequency of operation
- Optimized pinout for high-density DDR2 module design
- Chip-selects minimize power consumption by gating data outputs from changing state
- Supports SSTL_18 data inputs
- Checks parity on the DIMM-independent data inputs
- Partial parity output and input allows cascading of two SSTUA32866s for correct parity error processing
- Differential clock (CK and CK) inputs
- Supports LVCMOS switching levels on the control and RESET inputs
- Single 1.8 V supply operation (1.7 V to 2.0 V)
- Available in 96-ball, 13.5 mm x 5.5 mm, 0.8 mm ball pitch LFBGA package
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| SSTUA32866EC/G | SSTUA32866EC/G-T | 9352 794 42518 | Volume production | SOT536-1
(LFBGA96) | Tape reel smd | Standard Marking | SSTUA32866EC/G
| Always Pb-free |
Products in the above table are all in production. Some variants are discontinued; click here for information on these variants.
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| SSTUA32866EC/G | 9352 794 42518 | Order samples |
Applications
Technical documents
Support Documents
Parametrics/similar products
| Type number | Package | Supply voltage(V) | Application | FEATURES | Operating temp.(Cel) | Propagation Delay(ns) | Operating Frequency(MHz) | Inputs | Outputs |
|---|---|---|---|---|---|---|---|---|---|
| SSTUA32866EC/G | SOT536-1
(LFBGA96) | 1.7~2.0 | DDR2 400-667 Registered DIMMs | Parity checking | 0~+70 | 1.2~1.8 | 0~450 | 14 (1:2) or 25 (1:1) x SSTL_18 | 25 (1:1) or 28 (1:2) x SSTL_18 |
Similar products
SSTUA32866 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.
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