SYNCBURST SRAM — 4 Mbit, 8.5 ns, 100 MHz
The Micron MT58L256L18F1T-8.5 is a 4 Mbit synchronous burst SRAM from the SYNCBURST family, organized as 256K words by 18 bits. It delivers an 8.5 ns access time and operates at a 100 MHz clock frequency over a 3.135 V to 3.6 V supply. The parallel interface and 100-LQFP package make it a fit for high-speed cache buffers, network packet memory, and DSP scratchpad in telecom or test equipment where deterministic read/write latency matters.
Active status, RoHS non-compliant
The MT58L256L18F1T-8.5 carries an Active product status, meaning Micron continues to manufacture it. The RoHS compliance field is marked non-compliant, so this part contains lead (Pb) in solder balls or die-attach material. That rules it out for new EU RoHS-regulated designs but is acceptable for legacy industrial, military, or exempt applications where leaded solder is still permitted. Store the reels dry — the 100-LQFP is moisture-sensitive, and the bulk packaging may not include a moisture barrier bag.