The CD4049UB and CD4050B devices are inverting and non-inverting hex buffers, respectively, and feature logic level conversion using only one supply voltage (VCC). The input-signal high level (VIH) can exceed the VCC supply voltage when these devices are used for logic-level conversions. These devices are intended for use as CMOS to DTL/TTL converters and can drive directly two DTL/TTL loads. (VCC = 5V, VOL ≤ 0.4V, and IOL ≥ 3.3mA.)
- This can be used as a logic shifter from 5V to 3V3, great to connect many 3V3 devices to 5V arduino.
- DIP package.
Datasheet link: http://www.ti.com/lit/ds/symlink/cd4050b.pdf