The 74HC/HCT165 is a high-speed Si-gate CMOS device that is pin compatible with low power Schottky TTL (LSTTL) and is specified in compliance with JEDEC standard no. 7A. The 74HC/HCT165 is an 8-bit parallel-load or serial-in shift register with complementary serial outputs (Q7 and Q7) available from the last stage.
The Philips 74HC/HCT165 is a high-speed Si-gate CMOS device that functions as an 8-bit parallel-load or serial-in shift register. It features asynchronous parallel loading and synchronous serial input, with complementary serial outputs available from the last stage.
These devices are pin compatible with low power Schottky TTL (LSTTL) and comply with JEDEC standard no. 7A. The clock input utilizes a gated-OR structure allowing one input to serve as an active LOW clock enable.
| Device Type | 8-bit parallel-load or serial-in shift register |
|---|---|
| Technology | High-speed Si-gate CMOS |
| TTL Compatibility | Low power Schottky TTL (LSTTL) |
| Standard Compliance | JEDEC standard no. 7A |
| Max Clock Frequency (HC) | 56 MHz |
The PL (parallel load) input loads parallel data from D0 to D7 into the register asynchronously when it is LOW.
Data enters the register serially at the D0 input and shifts one place to the right with each positive-going clock transition when PL is HIGH.