Introduces two 8-bit serial-in parallel-out shift registers, CD54HC164 and CD54HCT164, with asynchronous reset. They support HC and HCT logic levels and can operate in a wide temperature range of -55°C to 125°C.
The CD54/74HC164 and CD54/74HCT164 are 8‑bit serial‑in/parallel‑out shift registers with buffered inputs, asynchronous master reset, and wide operating temperature range. They support two serial data inputs and are available in CERDIP, PDIP, and SOIC packages.
The document provides detailed absolute maximum ratings, DC electrical specifications, switching characteristics, pinout diagrams, and test circuits. It also includes a notice about product changes and warranty information from Texas Instruments.
| Maximum Clock Frequency (HC, 6 V) | 35 MHz |
|---|---|
| Propagation Delay (tPLH) at CL = 50 pF | 170 ns (2 V) / 212 ns (4.5 V) / 255 ns (6 V) |
The HC type can run up to 35 MHz at a 6 V supply.