Description
This 28-bit 1:2 configurable registered buffer is designed for 1.7V to 1.9V VDD operation. All inputs are compatible with the JEDEC standard for SSTL_18, except the chip-select gate-enable (CSGEN), control (C), and reset (RESET) inputs, which are LVCMOS. All outputs are edge-controlled circuits optimized for unterminated DIMM loads, and meet SSTL_18 specifications, except the open-drain error (QERR) output.

Features
• 28-bit 1:2 registered buffer with parity check functionality
• Supports SSTL_18 JEDEC specification on data inputs and outputs
• Supports LVCMOS switching levels on CSGEN and RESET inputs
• Low voltage operation: VDD = 1.7V to 1.9V
• Available in 176-ball LFBGA package

Applications
• DDR2 Memory Modules
• Provides complete DDR DIMM solution with ICS98ULPA877A or IDTCSPUA877A
• Ideal for DDR2 400, 533, and 667