onsemi CD4069UBCSJX

Overview

CD4069UBCSJX from Fairchild Semiconductor is a CMOS hex inverter IC containing six independent inverters, operating across 3.0V–15V supply range, with typical propagation delay of 50 ns at 5V and input capacitance of 6–15 pF. It delivers symmetric rise/fall times, high noise immunity (0.45×VDD), and low quiescent current (0.25 µA at 5V), used in digital logic level translation and oscillator circuits.

For engineers reviewing the CD4069UBCSJX datasheet, pinout, applications, or equivalent options, key selection criteria include supply voltage flexibility, output drive capability (±0.64 mA at 5V), temperature range (−55°C to +125°C), package type (14-lead SOP, EIAJ TYPE II), and compatibility with legacy CD4000-series designs.

Technical Context

The CD4069UBCSJX implements six unbuffered CMOS inverter stages using complementary MOS transistors, enabling rail-to-rail output swing and near-zero static power draw. Its input protection diodes clamp to VDD/VSS, supporting robust ESD tolerance without external components.

Propagation delay and transition time scale predictably with supply voltage-tPHL/tPLH drops from 90 ns at 5V to 50 ns at 15V-while output drive strength increases linearly (IOL = 0.64 mA at 5V, 4.2 mA at 15V), making it suitable for both low-power timing and moderate-speed logic interfacing.

Key Specifications

Pinout & Package

CD4069UBCSJX is housed in a 14-lead Small Outline Package (SOP), EIAJ TYPE II, 5.3 mm wide (Package Number M14D), with gull-wing leads and standard JEDEC footprint.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex inverter applications.

Compared with CD4069UBE and MC14069UBDR2, the CD4069UBCSJX offers optimal balance of surface-mount compatibility, cost, and verified performance across extended temperature range-making it ideal for volume industrial and automotive electronics where SOP packaging and reliability are prioritized.

Availability

CD4069UBCSJX is available at Aetrix Electronics and suitable for crystal oscillator circuits, power-on reset generators, digital level translation, and precision timing applications requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for CD4069UBCSJX includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Fairchild Semiconductor was a U.S.-based analog and discrete semiconductor manufacturer, acquired by ON Semiconductor in 2016; known for high-reliability logic, power, and interface products.

The CD4069UBCSJX belongs to the CD4000B-series CMOS logic family, designed for general-purpose digital logic functions in industrial, automotive, and instrumentation systems where wide supply range and low power are essential.

FAQ

What is the maximum operating supply voltage for CD4069UBCSJX?

The absolute maximum DC supply voltage for CD4069UBCSJX is +18 V, but the recommended operating range is 3.0 V to 15 V. Operating above 15 V may increase leakage current and reduce long-term reliability. The CD4069UBCSJX is specified for full functionality-including propagation delay, output drive, and noise immunity-only within the 3–15 V range per its datasheet.

Does CD4069UBCSJX support direct connection to TTL logic families?

Yes, CD4069UBCSJX can directly drive 74L-series TTL loads (fan-out of 2) and 74LS-series (fan-out of 1) at VDD = 5 V. Its output voltage levels (VOH ≥ 4.95 V, VOL ≤ 0.05 V) and drive strength (±0.64 mA) meet TTL input thresholds and current requirements. However, CD4069UBCSJX inputs are not TTL-compatible and require CMOS-level signals unless pulled to valid logic thresholds.

Is CD4069UBCSJX pin-compatible with CD4069UBE?

Yes, CD4069UBCSJX and CD4069UBE share identical pinout, logic function, and electrical specifications. The only difference is package: CD4069UBCSJX uses a 14-lead SOP (EIAJ TYPE II), while CD4069UBE uses a 14-lead PDIP. No PCB redesign is needed when substituting between them, though thermal and mechanical mounting differ significantly.

What is the typical input capacitance of each gate in CD4069UBCSJX?

The average input capacitance (CIN) of each inverter gate in CD4069UBCSJX is 6–15 pF, measured at any input terminal with VDD applied. This low capacitance minimizes loading on upstream drivers and supports high-frequency operation in multi-gate chains. The value varies slightly with process and voltage but remains within this range across the full −55°C to +125°C operating temperature.

Can CD4069UBCSJX be used to build a Schmitt-trigger circuit?

CD4069UBCSJX itself is not a Schmitt trigger, but it can be configured as one using external positive feedback resistors. By connecting a resistor from output to input of a single gate, hysteresis is introduced, enabling noise-immune switching. This implementation is widely documented in Fairchild's application notes and yields threshold voltages approximating 1/3 and 2/3 of VDD-though performance depends on resistor tolerance and layout parasitics.