The CD4049UBC and CD4050BC hex buffers are monolithiccomplementary MOS (CMOS) integrated circuits constructedwith N- and P-channel enhancement modetransistors. These devices feature logic level conversionusing only one supply voltage (VDD). The input signal highlevel (VIH) can exceed the VDD supply voltage when thesedevices are used for logic level conversions. Thesedevices are intended for use as hex buffers, CMOS to DTL/TTL converters, or as CMOS current drivers, and at VDD =5.0V, they can drive directly two DTL/TTL loads over thefull operating temperature range.Features Wide supply voltage range: 3.0V to 15V Direct drive to 2 TTL loads at 5.0V over full temperaturerange High source and sink current capability Special input protection permits input voltages greaterthan VDDApplications• CMOS hex inverter/buffer• CMOS to DTL/TTL hex converter• CMOS current “sink” or “source” driver• CMOS HIGH-to-LOW logic level converter