The 74HC/HCT7030 is a 9-bit x 64-word FIFO register with 3-state outputs, supporting synchronous or asynchronous operation.
The Philips 74HC/HCT7030 is an expandable First-In First-Out (FIFO) memory organized as 64 words by 9 bits. It features high-speed operation with a typical data rate of 33 MHz and very low power consumption, making it suitable for high-frequency applications.
The device includes separate controls for shift-in (SI) and shift-out (SO), allowing independent reading and writing operations. Status flags indicate the state of the FIFO: Data-In-Ready (DIR) shows if the input stage is empty, and Data-Out-Ready (DOR) indicates valid data at the outputs.
| Organization | 64 words x 9 bits |
|---|---|
| Max Clock Frequency (fmax) | 33 MHz |
| Propagation Delay (MR to DIR/DOR) | 21 ns (HC), 26 ns (HCT) |
| Propagation Delay (SO to Q) | 36 ns (HC), 40 ns (HCT) |
| Power Dissipation Capacitance | 660 pF |
The typical shift-in and shift-out rates are 33 MHz.
Yes, devices can be interconnected easily to expand word and bit dimensions.
When MR is LOW, control functions are cleared and data content is declared invalid.