![COMS 4028](https://abouelzahab.com/693-large_default/coms-4028.jpg)
![COMS 4028](https://abouelzahab.com/693-large_default/coms-4028.jpg)
The CD4028BM/CD4028BC is a BCD-to-decimal or binary-to-octal decoder consisting of 4 inputs, decoding logicgates, and 10 output buffers. A BCD code applied to the 4inputs, A, B, C, and D, results in a high level at the selected1-of-10 decimal decoded outputs. Similarly, a 3-bit binarycode applied to inputs A, B, and C is decoded in octal atoutputs 0–7. A high level signal at the D input inhibits octaldecoding and causes outputs 0–7 to go low.All inputs are protected against static discharge damage bydiode clamps to VDDand VSS