onsemi CD40106BCM

Overview

CD40106BCM from Fairchild Semiconductor is a hex Schmitt trigger IC built with CMOS technology, providing six independent hysteresis-input inverters. It operates from 3V to 15V supply, delivers guaranteed hysteresis ≥0.2×VDD, supports −55°C to +125°C industrial temperature range, and is used in noise-immune signal conditioning and low-power oscillator circuits.

For engineers reviewing the CD40106BCM datasheet, pinout, applications, or equivalent options, key selection criteria include supply voltage flexibility (3–15 V), input hysteresis (≥0.2×VDD), output drive capability (±0.36 mA at 5 V), temperature rating (−55°C to +125°C), and SOIC-14 package compatibility with legacy 4000-series logic designs.

Technical Context

The CD40106BCM implements six identical Schmitt-trigger inverter stages using complementary MOS transistors, each with independently biased positive- and negative-going thresholds (VT+ and VT−). Thresholds track supply voltage linearly-e.g., VT− ≈ 0.7×VDD and VT+ ≈ 0.9×VDD at +25°C-and exhibit low temperature drift (0.0005 V/°C at VDD = 10 V).

Hysteresis is inherent and process-guaranteed (≥0.2×VDD), enabling reliable noise rejection in slow or noisy input signals. Input protection diodes clamp to VDD and VSS, supporting ESD robustness without external components, and quiescent current remains below 120 µA across full supply and temperature range.

Key Specifications

Pinout & Package

CD40106BCM is housed in a 14-lead Small Outline Integrated Circuit (SOIC) package per JEDEC MS-012, 0.150" narrow body width, with standard 1.27 mm pitch and gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schmitt-trigger inverter applications.

Compared with CD40106BCN and MC14584BDR2G, the CD40106BCM offers SOIC-14 packaging optimized for automated assembly, while maintaining full electrical equivalence to the CD40106BC family and delivering proven reliability in harsh-temperature industrial control systems.

Availability

CD40106BCM is available at Aetrix Electronics and suitable for industrial sensor interfaces, low-power oscillators, power-on reset generators, and level-translating signal conditioning requiring stable component supply across extended temperature ranges.

Supply support for CD40106BCM 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 semiconductor company specializing in power management, analog, and interface ICs before its acquisition by ON Semiconductor in 2016.

The CD40106BCM belongs to Fairchild's legacy 4000-series CMOS logic family, designed for robust, low-power digital signal conditioning in industrial, automotive, and instrumentation applications.

FAQ

What is the maximum operating supply voltage for CD40106BCM?

The CD40106BCM supports a recommended operating supply voltage from 3 V to 15 V DC. Its absolute maximum rating is 18 V, but sustained operation above 15 V is not specified in the datasheet and may compromise reliability or parametric guarantees. For stable long-term performance, CD40106BCM should be operated within the 3–15 V range, with hysteresis and propagation delay values validated across that span.

Does CD40106BCM have built-in input protection?

Yes, CD40106BCM includes integrated diode clamps on all inputs connected to VDD and VSS, protecting against electrostatic discharge and transient overvoltage events. This allows direct connection to mechanical switches, potentiometers, or unbuffered sensor outputs without external protection components-confirmed in the General Description and Absolute Maximum Ratings sections of the Fairchild DS005985 datasheet for CD40106BCM.

Is CD40106BCM pin-compatible with CD40106BCN?

Yes, CD40106BCM and CD40106BCN share identical pin functions and numbering, differing only in package type: SOIC-14 versus PDIP-14. All 14 pins-including six Schmitt inverter inputs (pins 1,3,5,9,11,13), outputs (2,4,6,8,10,12), VDD (14), and VSS (7)-are electrically and functionally interchangeable. Layout changes are required only for footprint adaptation.

What is the typical hysteresis voltage of CD40106BCM at 5 V supply?

At VDD = 5 V, the CD40106BCM exhibits typical hysteresis (VT+ − VT−) of 2.2 V, with a guaranteed minimum of 1.0 V. Measured values from the DC Electrical Characteristics table show VT− = 1.4 V and VT+ = 3.6 V at +25°C, yielding 2.2 V typical hysteresis-providing strong noise immunity for signals with up to ±1.1 V of superimposed interference without false triggering.

Can CD40106BCM drive a 74LS logic input directly?

Yes, CD40106BCM can directly drive one 74LS input per gate, as stated in the Features section: "Low power TTL compatibility: Fan out of 2 driving 74L or 1 driving 74LS." At VDD = 5 V, its output sink/source capability (±0.36 mA) meets 74LS input current requirements (I_IL = −0.4 mA, I_IH = 20 µA), making CD40106BCM suitable for mixed-logic interfacing without buffer stages.