4049 – hex inverting buffer/level converter, CMOS 4000, DIP-16 (generic)

The 4049 is a 4000-series CMOS IC with six inverting buffers with increased output drive. Its inputs tolerate voltages above the supply rail, so it is often used to convert from a higher to a lower logic level, for example from 12 V CMOS logic to 5 V TTL. Note the unusual pinout: VDD is on pin 1, VSS on pin 8, and pins 13 and 16 are not connected. Its non-inverting sibling is the 4050. Like most 4000-series parts it works over a wide supply range; check the limits in the datasheet for the specific manufacturer and series. It comes in a 16-pin plastic DIP.

Condition: mixed surplus lot, untested. The bag may contain used (pulled) ICs of the same type from different manufacturers, so marking and date code vary. The photo shows one chip from this lot (Philips HEF4049BP 199140VK); only the background was cleaned to white, preserving the marking and leads.

Minimum order: 1 pc.

CD4049UB/CD4050B datasheet (Texas Instruments (reference)