M54HC194
Description
The M54/74HC194 is a high speed CMOS 4 BIT PIPO 2 SHIFT REGISTER fabricated in silicon gate C MOS technology.
Key Features
- a system designer may want in a shift register
- It features parallel inputs, parallel outputs, right shift and left shift serial inputs, clear line
- Synchronous parallel loading is acplished by applying the four data bits and taking both mode control inputs, S0 and S1 high
- The data are loaded into their respective flip-flops and appear at the outputs after the positive transition of the CLOCK input
- During loading, serial data flow is inhibited
- Shift right is acplished synchronously with the rising edge of the clock pulse when S0 is high and S1 is low
- Serial data for this mode is entered at the SHIFT RIGHT data input
- When S0 is low and S1 is high,data shifts left synchronously and new data is entered at the SHIFT LEFT serial input
- Clocking of the flipflops is inhibited when both mode control inputs are low
- The mode control inputs should be changed only when the CLOCK input is high
