RCA CD4009UBE CMOS Hex Inverting Buffer Level Converter DIP-16 NOS

RCA CD4009UBE Unbuffered Hex Inverter Logic IC DIP-16

Condition

Unused new old stock (NOS). Markings legible: CD4009UBE RCA. Straight leads with intact through-hole pins. Sold each.

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Product Overview

RCA CD4009UBE is an unbuffered CMOS hex inverting buffer and level converter in a 16-pin plastic dual-in-line package. It features six independent inverting channels designed for general logic inversion, driving DTL or TTL circuits directly, or stepping down high-voltage logic levels to lower supply rails.

Key Features

• Logic family: CD4000 series unbuffered CMOS
• Circuit function: Hex inverting buffer and level converter
• Supply voltage range (VDD): 3 V to 18 V
• Logic-level translation capability: Translates from high supply (VDD) down to lower supply (VCC)
• Drive capability: Up to two TTL loads at 5 V
• Package: 16-pin DIP through-hole (0.100 in lead pitch, 0.300 in row spacing)
• Operating temperature range: -55°C to +125°C

Applications

• Interfacing 12 V or 15 V CMOS systems down to 5 V TTL digital logic
• Driving low-power indicator lamps, LEDs, and small relay coils
• Synthesizer design and experimental audio oscillators utilizing unbuffered CMOS inverter stages
• Restoring and maintaining vintage industrial control boards and legacy test equipment

Frequently Asked Questions

Can the CD4009UBE operate with two different power supplies?

Yes. Pin 16 connects to VDD (3 V to 18 V) and pin 1 connects to VCC (up to VDD). When used as a logic-level converter, VCC can be tied to a lower rail such as 5 V while VDD runs at a higher logic level.

Can the outputs directly drive standard TTL logic?

Yes. The device provides direct drive capability for up to two standard TTL loads at 5 V.

How many inverting buffer channels are in this package?

Six independent inverting stages are integrated in the chip, each with dedicated input and output pins.

Unbuffered CMOS logic from the era when digital design meant discrete chips and clean power rails - ready to drop into a socket and put vintage hardware back to work.