Happy New Year everyone. A quick post to get the new year started and I recently scored a few HP5082-7340 hexadecimal LED display chips. These are cool looking integrated hexadecimal LED displays measuring 10mm wide and 14mm high with standard 2.54mm pin spacing.

A great feature of these displays is that each chip contains all the decoder and driver logic internal to the device. Unlike a Texas Instruments TIL302 which requires a BCD to 7-segment display driver chip such as a SN74LS47, the HP5082-7340 requires 5V, 4x pins for a BCD representation of the character, an enable signal and an optional display blanking signal.

Additionally, there is no need for current limiting resistors, this is handled on-chip.

To demonstrate how the display looks, a quick breakout was made, a schematic of the circuit shows the simplicity of interfacing one of these display chips to a microcontroller.

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