CD4009UBMS Hex Buffer/Converter may be used as a CMOS to TTL or DTL logic-level converter or a CMOS high- sink-current driver. The CD4049UB is the preferred hex buffer replacement for the CD4009UBMS in all applications except multiplexers. For applications not requiring high sink current or voltage conversion, the CD4069UB Hex Inverter is recommended. The CD4009UBMS is supplied in these 16 lead outline pack- ages: