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onsemi MC14014BD
- Part No.:
- MC14014BD
- Manufacturer:
- onsemi
- Category:
- Shift Registers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC14014BD.pdf
- Description:
- IC SHIFT REGISTER 8BIT 16-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,079
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Product details
Overview
MC14014BD from ON Semiconductor is a synchronous parallel-input/serial-output 8-bit static shift register in SOIC-16 package, operating from 3.0 V to 18 V DC, featuring Q6/Q7/Q8 stage outputs, full static operation, and double diode input protection. It enables low-power, high-noise-immunity data queueing in industrial control panels and legacy instrumentation interfaces.
For engineers reviewing the MC14014BD datasheet, pinout, applications, or equivalent options, key selection considerations include its 8-bit synchronous parallel load capability, 15 V max supply tolerance, SOIC-16 thermal profile, and compatibility with CD4014B-based designs requiring extended voltage range and enhanced noise immunity.
Technical Context
The MC14014BD implements a fully static CMOS shift register architecture using P- and N-channel enhancement-mode MOS devices on a monolithic die. Its synchronous parallel load path allows simultaneous capture of 8-bit data on the rising edge of CLOCK while P/S = HIGH, followed by serial shifting on subsequent clock edges.
It supports dual-mode operation: synchronous parallel input (P/S = HIGH) and synchronous serial input (P/S = LOW), with dedicated DS (Data Serial) input and three buffered output taps (Q6, Q7, Q8) enabling flexible tap-point access without external buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Synchronous parallel-input / serial-output 8-bit static shift register |
| Supply Voltage Range | 3.0 V to 18 V DC - supports wide-range industrial power rails and battery-backed systems |
| Output Stages | Q6, Q7, Q8 available externally - enables mid-register monitoring without cascading or additional latches |
| Input Protection | Double diode input protection - improves robustness against ESD and transient overvoltage in noisy environments |
| Logic Family | CMOS - ensures low quiescent current (≤0.6 µA at 5 V) and high noise immunity (≥40% VDD) |
| Max Clock Frequency | 4.0 MHz at VDD = 15 V - sufficient for moderate-speed data serialization in sensor interface and display driver applications |
| Load Drive Capability | Drives two low-power TTL loads - simplifies interfacing with legacy logic without level-shifting buffers |
Pinout & Package
MC14014BD is housed in a 16-pin SOIC package (Case 751B), 3.9 mm wide, with standard 1.27 mm pitch and gull-wing leads. The package supports surface-mount reflow and offers improved thermal performance over PDIP for compact industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (P1) | Parallel Data Input | LSB of 8-bit parallel load bus; sampled synchronously with CLOCK when P/S = HIGH |
| 2 (P2) | Parallel Data Input | Second bit of parallel input bus; tied to system data bus or microcontroller port |
| 3 (P3) | Parallel Data Input | Third bit of parallel input bus; requires external pull-up/down if unused |
| 4 (P4) | Parallel Data Input | Fourth bit of parallel input bus; shares same timing constraints as P1–P3 |
| 5 (P5) | Parallel Data Input | Fifth bit of parallel input bus; must be held at valid logic level when not used |
| 6 (P6) | Parallel Data Input | Sixth bit of parallel input bus; also feeds internal stage driving Q6 output |
| 7 (P7) | Parallel Data Input | Seventh bit of parallel input bus; also feeds internal stage driving Q7 output |
| 8 (VSS) | Ground Reference | Primary ground return for all inputs, outputs, and internal logic; must be low-impedance |
| 9 (P8) | Parallel Data Input | MSB of 8-bit parallel load bus; completes full byte capture path |
| 10 (Q8) | Output Tap | MSB output of shift register; available directly without external inversion or delay |
| 11 (Q7) | Output Tap | Second-highest bit output; provides early access to shifted data before final stage |
| 12 (Q6) | Output Tap | Sixth-stage output; enables partial-shift readout for pipeline or diagnostic use |
| 13 (DS) | Serial Data Input | Input for serial shifting mode (P/S = LOW); synchronized to CLOCK rising edge |
| 14 (CLOCK) | Clock Input | Rising-edge-triggered master clock; controls both parallel load and serial shift timing |
| 15 (P/S) | Mode Control | HIGH = parallel load mode; LOW = serial shift mode; must be stable before clock edge |
| 16 (VDD) | Positive Supply | Single positive supply rail; accepts 3–18 V; decoupling capacitor required near pin |
Key Features
| Feature | Design Value |
|---|---|
| Full Static Operation | Zero minimum clock frequency - supports pause-and-resume operation in low-power or event-driven systems |
| Synchronous Parallel Load | Simultaneous 8-bit data capture on single CLOCK edge - eliminates setup/hold timing skew across bits |
| Multiple Output Taps | Q6/Q7/Q8 outputs accessible without external fanout - reduces component count in multi-tap serial chains |
| Wide Supply Range | 3.0 V to 18 V operation - interoperable with 5 V, 12 V, and battery-powered subsystems without regulators |
| Pin-for-Pin Compatibility | Direct replacement for CD4014B - enables drop-in upgrade in existing designs with improved voltage margin and noise rejection |
Applications
| Industrial Control Panel Interface | Legacy Instrumentation Data Serialization |
|---|---|
Use Scenario: Capturing 8-bit status flags from mechanical switch banks or relay arrays in factory HMIs. IC Role / Device Role / Timing Role: Synchronous parallel latch and serial shift register - converts parallel mechanical inputs into a single-wire RS-485-compatible stream. Use Value: Eliminates need for discrete latches and multiplexers; leverages Q6/Q7/Q8 for real-time status sampling during shift cycles. | Use Scenario: Converting analog meter digitized outputs (e.g., 7-segment decoder outputs) into serial telemetry for remote logging. IC Role / Device Role / Timing Role: Data queueing buffer - holds digitized readings and shifts them out under microcontroller control at configurable rates. Use Value: Wide 3–18 V supply range accommodates unregulated instrument power rails; double diode protection withstands field-induced transients. |
| Microcontroller GPIO Expansion | LED Display Driver Interface |
Use Scenario: Extending limited I/O ports of 8-bit MCUs (e.g., PIC16F, ATmega328P) to drive 8-bit peripheral buses. IC Role / Device Role / Timing Role: Parallel-to-serial bridge - maps MCU port writes to serialized control signals for SPI-unaware peripherals. Use Value: Synchronous load ensures deterministic timing; SOIC-16 footprint fits dense embedded layouts without redesign. | Use Scenario: Driving common-anode 7-segment displays via serial data from an MCU with minimal pin usage. IC Role / Device Role / Timing Role: Serial data formatter - accepts serial bitstream and outputs parallel segments with precise timing alignment. Use Value: Q6/Q7/Q8 outputs allow direct connection to segment drivers; 15 V max rating supports high-brightness LED forward voltages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit synchronous shift register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD4014BE | Same function but narrower 3–15 V supply range; no double diode input protection; higher quiescent current at 125°C | Limited to benign environments; unsuitable for industrial transients or extended temperature operation | Select MC14014BD when operating above 15 V or in electrically noisy settings |
| MC14021BD | Asynchronous parallel load (no CLOCK dependency for load); identical SOIC-16 package and pinout | Enables immediate parallel capture independent of clock phase - useful for event-triggered sampling | Choose MC14021BD only when asynchronous load timing is required; otherwise MC14014BD offers tighter timing control |
Compared with CD4014BE and MC14021BD, the MC14014BD delivers superior voltage margin (up to 18 V), built-in transient protection, and deterministic synchronous timing - making it optimal for industrial control and legacy system upgrades where reliability and timing precision are critical.
Availability
MC14014BD is available at Aetrix Electronics and suitable for industrial control panel interfaces, legacy instrumentation data serialization, and microcontroller GPIO expansion requiring stable component supply and long-term obsolescence management.
Supply support for MC14014BD 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
ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power management, analog, logic, and discrete components for automotive, industrial, and cloud infrastructure markets.
The MC14014BD belongs to ON Semiconductor's legacy CMOS logic family, designed specifically for robust, wide-voltage-range digital interfacing in harsh industrial and instrumentation environments where reliability and long-term availability are essential.
FAQ
What is the maximum supply voltage for MC14014BD?
The MC14014BD supports a DC supply voltage range of 3.0 V to 18.0 V, with absolute maximum rating of +18.0 V referenced to VSS. Operation beyond this risks permanent damage. At 15 V, it achieves up to 4.0 MHz clock frequency and maintains full output drive capability per datasheet specifications. Always include a 0.1 µF ceramic decoupling capacitor between VDD (pin 16) and VSS (pin 8).
How does MC14014BD differ from MC14021BD?
The MC14014BD uses synchronous parallel loading (data captured on CLOCK rising edge when P/S = HIGH), whereas the MC14021BD performs asynchronous parallel loading (data latched immediately upon P/S transition). Both share identical SOIC-16 pinout and Q6/Q7/Q8 outputs, but MC14014BD offers tighter timing control and is preferred for clock-synchronized systems. MC14014BD is not a functional substitute for MC14021BD in asynchronous applications.
Can MC14014BD replace CD4014B in existing designs?
Yes, the MC14014BD is explicitly specified as a pin-for-pin replacement for CD4014B, with identical SOIC-16 pinout and function. It improves upon CD4014B with extended 3–18 V supply range (vs. 3–15 V), lower quiescent current, double diode input protection, and better noise immunity. No PCB changes are required, though layout review for VDD/VSS decoupling is recommended due to higher max voltage tolerance.
What are the timing requirements for the P/S control input on MC14014BD?
The P/S input on MC14014BD must be stable for at least 100 ns before the rising edge of CLOCK (setup time) and held for at least 25 ns after that edge (hold time) at VDD = 15 V. These values scale with supply voltage - e.g., at 5 V, minimum setup is 200 ns and hold is 20 ns. Violating these windows may cause metastability or incorrect mode selection, leading to corrupted parallel load or unintended serial shift behavior.
Which output pins provide access to internal shift register stages on MC14014BD?
The MC14014BD provides direct access to the sixth, seventh, and eighth stages of its internal shift register via pins 12 (Q6), 11 (Q7), and 10 (Q8), respectively. These outputs are buffered and available simultaneously, enabling mid-register monitoring, partial-shift diagnostics, or multi-point data extraction without cascading multiple devices. All three outputs share the same electrical characteristics: VOL ≤ 0.05 V at IOL = 4.2 mA (VDD = 15 V).
MC14014BD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 4000B
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- Shift Register
- Output Type:
- Push-Pull
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Function:
- Parallel or Serial to Serial
- Voltage - Supply:
- 3V ~ 18V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MC14014BD FAQ
1.How can I place an order for MC14014BD through Aetrix?
Please submit a Request for Quotation (RFQ) for MC14014BD 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 MC14014BD reliable?
The price and inventory of MC14014BD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC14014BD is usually 5 days.
3.What payment methods are accepted for MC14014BD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC14014BD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC14014BD?
MC14014BD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC14014BD 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 MC14014BD?
For technical support, including MC14014BD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC14014BD requirements.
6.How does Aetrix verify that MC14014BD is sourced from the original manufacturer or authorized distributors?
All MC14014BD 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 MC14014BD meets industry standards.
7.What is the process for return or replacement of MC14014BD?
All MC14014BD units undergo pre-shipment inspection (PSI). If there is an issue with MC14014BD, 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 MC14014BD part is unused and in its original packaging.
Return procedure for MC14014BD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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