The MCM67Q909 has been discontinued. Last ship date is 07/11/2002. Suggested replacement: none.
The MCM67Q909 is a 4Mbit static random access memory, organized as
512K words of 9 bits. It features separate TTL input and output buffers, which
drive 3.3 V output levels, and incorporates input and output registers on-board
with high speed SRAM. It also features transparent–write and data pass-through