1. 74LS273 D Flip Flops and 74LS157 2-1 Mux Zachary Ryan zqr100@psu
74LS273 D Flip Flops and 74LS Mux Zachary Ryan CENBD 452 Fall 2002

2. 74LS157 2-1 Mux Inputs: Strobe, Select, A, B Output: Y
Y = A, when Select = 0
Y = B, when Select = 1
Opted to use instead of the 74LS151

3. 74LS273 D Flip Flop Inputs: D, MR, Clock Output: Q When the clock
rises the output
Q is set equal to
the input D
MR is the reset

4. Schematic

5. Simple Schematic
0 - Load
1 - Hold

6. Misc 74LS157 Cost: $0.29 Maximum Propagation Delay: 32ns
More info:
Cost: $0.45
Maximum Propagation Delay: ns
More info: