The HSP9501 is a 10-bit wide programmable data buffer designed by Intersil and is used in high speed digital systems. The buffer can be selected to operate in two different modes: delay mode and data recirculate mode. In the delay mode, a programmable data pipeline is created which can provide 2 to 1281 clock cycles of delay between the input and output data. In the data recirculate mode, the output data path is internally routed back to the input to provide a programmable circular buffer. The length of the buffer or amount of delay is programmed through the use of the 11-bit Length Control Input Port (LC0-10) and the Length Control Enable (LCEN). An 11-bit value is applied to the LC0-10 inputs, LCEN is asserted, and the next selected clock edge loads the new count value into the Length Control Register. The delay path of the HSP9501 consists of two registers with a programmable delay RAM between them, therefore, the value programmed into the Length Control Register is the desired length - 2. The range of values which can be programmed into the Length Control Register are from 0 to 1279.
The HSP9501 is a 10‑bit wide programmable data buffer designed for high‑speed digital systems. It offers two operation modes—delay mode and data‑recirculate mode—selected via the MODSEL input, and provides programmable delays from 2 to 1281 clock cycles.
Key features include DC to 32 MHz operating frequency, three‑state TTL‑compatible I/O, low‑power CMOS, and flexible clock edge selection. The device is supplied in a 44‑lead PLCC package and is intended for applications such as sample‑rate conversion, video processing, and programmable serial data shifting.
| Operating Frequency | DC to 32 MHz |
|---|---|
| Programmable Buffer Length | 2 to 1281 Words |
| Data Word Width | 10 Bits |
| Supply Voltage | 5.0 V ±5 % |
| Maximum Lead Temperature (Soldering) | 300 °C |
| Input Leakage Current | ±10 µA |
| Logical High Input Voltage (VIH) | 5.25 V |
| Logical Low Input Voltage (VIL) | 4.75 V |
The device can operate in Delay mode or Data Recirculate mode, selected via the MODSEL input.
The device operates up to 32 MHz.