74HCT42 - BCD to decimal decoder 1-of-10 DIP 16Pin
Make a strong finite state machine by implementing this from Semiconductors. This decoder has an operating temperature range of -40 °C to 125 °C. This product comes packaged in bulk, so the parts will be stored loosely. This inverting device has a typical operating supply voltage of 5 V. Its minimum operating supply voltage of 2 V, while its maximum is 6 V.