Texas Instruments SN74ACT7806
The SN74ACT7806 is a 256-word by 18-bit FIFO for high speed and fast access times. It processes data at rates up to 50 MHz and access times of 15 ns in a bit-parallel format. The memory is full when the number of words clocked in exceeds the number of words clocked out by 256.SN74ACT7806 256 × 18 STROBED FIRST-IN, FIRST-OUT MEMORY SCAS438C – APRIL 1992 – REVISED APRIL 1998 D Member of the Texas Instruments Widebus™ Family D Load Clock and Unload Clock Can Be Asynchronous or Coincident D 256 Words by 18 Bits D Low-Power Advanced CMOS Technology D Full, Empty, and Half-Full Flags D Programmable Almost-Full/Almost-Empty Flag D Fast Access Times of 15 ns With a 50-pF Load and All Data Outputs Switching Simultaneously D Data Rates up to 50 MHz D 3-State Outputs D Pin-to-Pin Compatible With SN74ACT7804 and SN74ACT7814 D Packaged in Shrink Small-Outline 300-mil Package Using 25-mil Center-to-Center Spacing description A FIFO memory is a storage device that allows data to be written into and read from its array at independent data rates. Data is written into memory on a low-to-high transition at the load clock (LDCK) input and is read out on a low-to-high transition at the unload clock (UNCK) input. When the memory is full, LDCK signals have no effect on the data residing in memory.