Truth Table
e
Decode Truth Table (Strobe
Data Inputs
1)
Selected Output
e
e
Inhibit
CD4514
CD4515
Logic ‘‘1’’
Logic ‘‘0’’
D
C
B
A
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
1
0
1
S0
S1
S2
S3
0
0
0
0
0
0
0
0
1
1
1
1
0
0
1
1
0
1
0
1
S4
S5
S6
S7
0
0
0
0
1
1
1
1
0
0
0
0
0
0
1
1
0
1
0
1
S8
S9
S10
S11
0
0
0
0
1
1
1
1
1
1
1
1
0
0
1
1
0
1
0
1
S12
S13
S14
S15
e
e
1
X
X
X
X
All Outputs
All Outputs
0, CD4514
1, CD4515
e
X
Don’t Care
AC Test Circuit and Switching Time Waveforms
TL/F/5994–4
TL/F/5994–3
FIGURE 1
4