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Step 1 of 1 6.040E A system requires a 5-to-32 binary decoder with a single enable active-low input. When the EN1 input pulled HIGH, either the EN2-L or the EN3-L inputs could be used as enable, with the other input grounded. The following are the pros and cons of using EN2-L versus EN3_L: It simplifies cascading and/or data reception. This multiple enable function allows easy parallel expansion of the device It is possible to enable one of the decoder out of many decoders. In some cases, to combine decoders to make large one, without any additional components, especially if the decoders have the large enable inputs.