The Motorola MCM69Q618 is a 1 Megabit static random access memory, organized as 64K words of 18 bits. It features separate data input and data output buffers and incorporates input and output registers on board with high speed SRAM.

By using the pass–through function, the output port Q can be made to reflect either the contents of the array or the data presented to the input port D. For read/write or a read cycle with G low, the Q port will output the contents of the array. However, if PT is asserted, the Q port will instead output the data presented at the D input port.

? Single 3.3 V ± 5 Power Supply

? Fast Access Times: 6/8/10 ns Max

? Sustained Throughput of 1.49 Gigabits/Second

? Single Clock Operation

? Address, Data Input, E1, E2, PT, W, and Data Output Registers on Chip

? 83 MHz Maximum Clock Cycle Time

? Self Timed Write

? Separate Data Input and Data Output Pins

? Pass–Through Feature

? Asynchronous Output Enable (G)

? LVTTL Compatible I/O

? No Dead Cycles Required for Reads after Writes or for Writes after Reads

? 100 Pin TQFP Package

? Simultaneous Reads and Writes

Suggested Applications

— ATM — Ethernet Switches — Routers

— Cell/Frame Buffers — SNA Switches — Shared Memory