SN74LS195A Universal 4-Bit Shift Register The SN74LS195A is a high speed 4-Bit Shift Register offering typical shift frequencies of 39 MHz.
It is useful for a wide variety of register and counting applications.
It utilizes the Schottky diode clamped process to achieve high speeds and is fully compatible with all ON Semiconductor TTL products.
http://onsemi.com Typical Shift Right Frequency of 39 MHz Asynchronous Master Reset J, K Inputs to Firs