
Digital Board Integrated Circuits
Quantity Designators
Type
Done
2 U1,
U8
LM358
Dual Op Amp
3
U2, U10 – U11
CD40106
Hex Schmitt Trigger
1 U3
CD4071
Quad 2 Input OR Gate
3
U4, U12 – U13
CD4093
Quad 2 Input NAND Schmitt Trigger
1 U5
CD4013
Dual D Flip Flop
2
U6 – U7
CD4034
8 Bit Shift Register with Parallel Load
1 U9
CD4053
Quad 1 of 2 Switch
2 U14,
U15
LM324
Quad Op Amp
CD
405
3
CD4
034
CD403
4
CD
401
0
6
CD4
01
06
CD4
010
6
LM3
2
4
LM3
2
4
LM3
5
8
LM3
5
8
CD
407
1
CD4
093
CD
409
3
CD
409
3
CD401
3
Figure 7-4: Digital Board IC Placement Guide
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