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onsemi MC14584BFG
- Part No.:
- MC14584BFG
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
MC14584BFG.pdf
- Description:
- IC INVERTER 6CH 1-INP SOEIAJ-14
- Quantity:
- Payment:
- Shipping:
Inventory:2,153
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Product details
Overview
MC14584BFG from onsemi is a hex Schmitt trigger IC built with MOS P- and N-channel enhancement devices in a monolithic structure, providing six independent hysteresis-input inverters. It operates from 3.0 V to 18 V, delivers ±10 mA output drive per pin, and exhibits 0.27–1.7 V hysteresis voltage (VH) depending on supply voltage - enabling robust noise immunity in signal conditioning for industrial control interfaces.
For engineers reviewing the MC14584BFG datasheet, pinout, applications, or equivalent options, this device is selected for slow-edge waveform squaring, TTL-load interfacing, and low-power digital noise filtering where supply flexibility and input hysteresis are critical design requirements.
Technical Context
The MC14584BFG implements six identical Schmitt-trigger inverter stages, each with independently defined positive-going (VT+) and negative-going (VT−) thresholds - e.g., at VDD = 5 V: VT+ = 1.9 V, VT− = 1.6 V - yielding 0.3 V hysteresis. Input protection includes double diode clamping per pin, and unused inputs must be tied to VSS or VDD to prevent floating states.
It supports dynamic operation up to 1 MHz (CL = 50 pF), with propagation delays of 40–250 ns and rise/fall times of 40–200 ns across 5–15 V supply range. Total supply current scales linearly with frequency: IT = (1.8 µA/kHz)·f + IDD at 5 V, where quiescent IDD is ≤1.0 µA at 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.0 V to 18 V DC - enables direct interface with legacy 5 V, 10 V, and 15 V logic systems without level-shifting. |
| Hysteresis Voltage (VH) | 0.27 V (min) to 1.7 V (max) - provides stable switching margins against noise on slow-rising signals like sensor outputs or RC oscillators. |
| Output Drive Capability | ±10 mA per pin - sufficient to directly drive two low-power TTL loads or one low-power Schottky TTL load over full temperature range. |
| Propagation Delay | 40 ns (typ) to 250 ns (max) at VDD = 15 V - ensures predictable timing in clock cleanup and debounce circuits. |
| Input Protection | Double diode clamping on all inputs - prevents latch-up and ESD damage from transient overvoltage up to ±0.5 V beyond rails. |
| Operating Temperature | −55 °C to +125 °C - qualified for extended industrial and under-hood automotive environments (via NLV variants). |
| Quiescent Current | ≤1.0 µA at 15 V and 25 °C - supports battery-powered or ultra-low-power standby modes in remote sensors. |
Pinout & Package
MC14584BFG uses the SOEIAJ-14 (Case 965) surface-mount package: 14-pin, 0.390" wide body, 1.27 mm pitch, Pb-free, with gull-wing leads. Dimensions: 9.90–10.50 mm × 5.10–5.45 mm × 1.42 mm max height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Input (IN1–IN6) | Individual Schmitt-trigger inputs - each requires explicit biasing; floating inputs cause undefined output and increased power consumption. |
| 2, 4, 6, 8, 10, 12 | Output (OUT1–OUT6) | CMOS-compatible buffered outputs - capable of sourcing/sinking ±10 mA, rail-to-rail swing, no pull-up required. |
| 7 | VSS | Ground reference for all logic and power - must be low-impedance connection to minimize ground bounce in multi-stage triggering. |
| 14 | VDD | Positive supply rail - decoupling capacitor (0.1 µF ceramic) required within 5 mm for stable high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply range (3–18 V) | Eliminates need for dedicated voltage regulators when interfacing mixed-voltage subsystems (e.g., 3.3 V MCU to 12 V sensor). |
| Input hysteresis (≥0.27 V) | Rejects noise spikes up to 270 mV on slowly changing analog-like signals such as thermistor divider outputs or potentiometer wipers. |
| Double diode input protection | Withstands repetitive ±2 kV HBM ESD without external TVS, reducing BOM count in industrial I/O modules. |
| Pb-free, RoHS-compliant | Meets IPC-J-STD-020 moisture sensitivity level 1 (MSL-1) - allows standard reflow without baking or special handling. |
| −55 °C to +125 °C operation | Validated for use in unregulated enclosures near motors, power supplies, or outdoor junction boxes without thermal derating. |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller Input Debouncing |
|---|---|
Use Scenario: Cleaning noisy analog signals from RTD, thermistor, or proximity sensor bridges before ADC sampling or comparator latching. IC Role / Device Role / Timing Role: Six independent Schmitt inverters act as threshold comparators with hysteresis, converting slow-rising resistance-based voltages into clean digital edges. Use Value: Eliminates software debouncing overhead and prevents false triggers caused by EMI-induced oscillation on long sensor cables. | Use Scenario: Debouncing mechanical switch inputs (pushbuttons, limit switches) connected to GPIO pins of ARM Cortex-M or PIC microcontrollers. IC Role / Device Role / Timing Role: Each inverter stage conditions one switch channel, squaring up contact bounce transients into single monotonic transitions. Use Value: Reduces firmware complexity by offloading hardware-level edge stabilization - enabling deterministic interrupt latency <100 ns. |
| RC Oscillator Frequency Stabilization | Legacy TTL Logic Interface Translation |
Use Scenario: Generating stable clock signals from low-cost RC networks in cost-sensitive timer circuits or LED flashers. IC Role / Device Role / Timing Role: Forms a relaxation oscillator with external R/C network; hysteresis defines precise charge/discharge thresholds for repeatable period. Use Value: Achieves ±5% frequency stability over temperature without crystal - suitable for non-critical timing like panel backlight control. | Use Scenario: Interfacing modern CMOS logic (e.g., MCUs) with legacy 5 V TTL devices such as 74LS-series counters or display drivers. IC Role / Device Role / Timing Role: Acts as level translator and noise filter - accepts TTL-compatible input thresholds while driving TTL loads directly. Use Value: Enables drop-in replacement of obsolete 74HC14 in brownfield designs without modifying PCB layout or pull-up resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schmitt-trigger inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD40106BE | Same 14-pin SOIC package, but wider VDD range (3–20 V); slightly higher hysteresis (0.33–2.0 V) and slower max speed (~1 MHz at 15 V). | Preferred for new designs requiring broader supply tolerance and AEC-Q200 qualification via CD40106BME. | Select CD40106BE only if VDD > 18 V capability or legacy TI/ST footprint compatibility is required. |
| SN74LV14APWR | 3.3 V only (1.65–5.5 V), lower hysteresis (≈0.15 V), faster propagation (5.5 ns typ), TSSOP-14 package. | Suitable for high-speed, low-voltage digital systems (e.g., FPGA I/O conditioning) but incompatible with 12/15 V industrial rails. | Choose SN74LV14APWR only for 3.3 V domains demanding sub-10 ns timing; not interchangeable with MC14584BFG in mixed-voltage systems. |
Compared with CD40106BE and SN74LV14APWR, the MC14584BFG uniquely balances wide-voltage operation (3–18 V), industrial temperature range, and proven noise immunity - making it irreplaceable in legacy 5/12/15 V industrial controls where supply headroom and EMI resilience are non-negotiable.
Availability
MC14584BFG is available at Aetrix Electronics and suitable for industrial sensor conditioning, microcontroller input debouncing, and RC oscillator stabilization requiring stable component supply across extended temperature and voltage ranges.
Supply support for MC14584BFG 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, logic, and discrete components for automotive, industrial, and cloud infrastructure markets.
The MC14584BFG belongs to onsemi's legacy CMOS logic family designed for high-noise-immunity digital interfacing in harsh environments - emphasizing reliability, wide supply tolerance, and long-term manufacturability.
FAQ
What is the maximum operating supply voltage for MC14584BFG?
The MC14584BFG supports a DC supply voltage range of −0.5 V to +18.0 V referenced to VSS. Its rated operational range is 3.0 V to 18.0 V DC. Exceeding 18.0 V risks permanent damage per absolute maximum ratings, and operation below 3.0 V may result in unreliable hysteresis behavior or incomplete logic transitions. The MC14584BFG must always be biased within these limits for guaranteed functionality.
Can MC14584BFG replace MC14069UB in existing designs?
Yes, the MC14584BFG can directly replace the MC14069UB hex inverter in applications requiring enhanced noise immunity. Unlike the MC14069UB, the MC14584BFG incorporates Schmitt-trigger inputs with hysteresis, enabling reliable "squaring up" of slowly changing waveforms. No PCB changes are needed, but ensure unused inputs on the MC14584BFG are tied to VSS or VDD, as floating inputs increase power consumption and risk oscillation.
What is the hysteresis voltage (VH) of MC14584BFG at 12 V supply?
At VDD = 12 V, the MC14584BFG exhibits a typical hysteresis voltage (VH) of 1.3 V, with a minimum of 1.0 V and maximum of 1.5 V across temperature. This value is derived from the difference between VT+ (10.6 V min) and VT− (9.7 V max) per the Electrical Characteristics table. The MC14584BFG's hysteresis ensures stable switching even with 1.0 V peak-to-peak noise on input signals.
Is MC14584BFG still in active production?
No, the MC14584BFG is marked as discontinued per onsemi's October 2025 datasheet revision. It is not recommended for new designs. However, Aetrix Electronics maintains legacy inventory and supports ongoing production for existing programs through controlled allocation, obsolescence mitigation, and cross-reference guidance for functionally aligned alternatives.
Does MC14584BFG require external pull-up resistors on its outputs?
No, the MC14584BFG does not require external pull-up resistors. Its CMOS totem-pole outputs provide rail-to-rail voltage swing and can source/sink up to ±10 mA per pin. Pull-ups are unnecessary unless interfacing with open-drain or current-sinking loads outside the specified drive capability - in which case the MC14584BFG's output stage remains fully functional without added components.
MC14584BFG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 4000B
- Package/Case:
- 14-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- Inverter
- Number of Circuits:
- 6
- Number of Inputs:
- 1
- Features:
- Schmitt Trigger
- Voltage - Supply:
- 3V ~ 18V
- Current - Quiescent (Max):
- 1 µA
- Current - Output High, Low:
- 8.8mA, 8.8mA
- Input Logic Level - Low:
- 1.6V ~ 4.6V
- Input Logic Level - High:
- 3.4V ~ 10.5V
- Max Propagation Delay @ V, Max CL:
- 80ns @ 15V, 50pF
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOEIAJ-14
MC14584BFG FAQ
1.How can I place an order for MC14584BFG through Aetrix?
Please submit a Request for Quotation (RFQ) for MC14584BFG on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC14584BFG reliable?
The price and inventory of MC14584BFG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC14584BFG is usually 5 days.
3.What payment methods are accepted for MC14584BFG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC14584BFG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC14584BFG?
MC14584BFG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC14584BFG order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC14584BFG?
For technical support, including MC14584BFG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC14584BFG requirements.
6.How does Aetrix verify that MC14584BFG is sourced from the original manufacturer or authorized distributors?
All MC14584BFG products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC14584BFG meets industry standards.
7.What is the process for return or replacement of MC14584BFG?
All MC14584BFG units undergo pre-shipment inspection (PSI). If there is an issue with MC14584BFG, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC14584BFG part is unused and in its original packaging.
Return procedure for MC14584BFG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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