What the 100 MHz clock and 8 ns access time mean for your bus
The CY7C1345G-100AXIT is a 4.5 Mbit synchronous SRAM organized as 128K x 36 bits, clocked at 100 MHz with a pipelined read access time of 8 ns. The 100 MHz clock sets the maximum bus rate for the address and control signals; the 8 ns access time is the delay from clock edge to data valid on the outputs. In a system with a 10 ns clock period, the 8 ns access leaves 2 ns of setup margin for the receiving device — tight but workable with controlled trace impedance and matched propagation delays on the data bus. The 36-bit wide data bus (32 data + 4 parity or byte-enable bits) matches processors with a 36-bit memory controller, such as certain PowerQUICC or MIPS-class parts, without external muxing.
Temperature grade and board-fit
The Tape & Reel (TR) packaging option means the parts arrive on 13-inch reels, typically 1000 pieces per reel for this package size. This is the standard format for pick-and-place assembly; no tube or tray handling is needed.
Active lifecycle — sourcing posture
The base product number CY7C1345 covers the family; the G suffix indicates the lead-free / RoHS-compliant version, and the -100AXIT suffix specifies the 100 MHz speed grade, industrial temperature, and Tape & Reel packaging.