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Home > Products > Integrated Circuits (ICs) > Logic > Gates and Inverters

onsemi MC14077BDG

Name: MC14077BDG
Brand: onsemi
SKU: MC14077BDG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MC14077BDG

Manufacturer:: onsemi

Category:: Gates and Inverters

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: MC14077BDG.pdf

Description:: IC GATE XNOR 4CH 2-INP 14SOIC

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Product details

Overview

MC14077BDG from onsemi is a CMOS quad exclusive-NOR (XNOR) gate IC operating across 3.0–18 VDC supply, delivering 0.05 V logic-low output at 15 VDD and supporting 125°C ambient operation. It features double diode input protection, buffered outputs capable of driving two low-power TTL loads, and is housed in a Pb-free SOIC-14 package for industrial control and battery-powered logic interfacing.

For engineers reviewing the MC14077BDG datasheet, pinout, applications, or equivalent options, this page provides verified functional specifications, validated pin assignments, real-world use cases in level-shifting and parity generation, and confirmed drop-in alternatives for legacy CMOS logic upgrades.

Technical Context

The MC14077BDG implements four independent CMOS XNOR gates using complementary P- and N-channel enhancement-mode MOSFETs on a single monolithic die. Each gate performs logical equivalence (A ⊙ B = A·B + Ā·B̄), with inputs tolerant to −0.5 V to VDD + 0.5 V and outputs specified for VOL ≤ 0.05 V and VOH ≥ 14.95 V at VDD = 15 V.

It operates over −55°C to +125°C with quiescent current as low as 0.5 µA at 25°C and 15 VDD, and supports dynamic switching up to 110 ns propagation delay (tPHL/tPLH) at 15 VDD with 50 pF load - confirming its suitability for low-power, noise-immune digital signal conditioning in mixed-voltage systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Logic Function	Quad exclusive-NOR (XNOR); outputs HIGH when both inputs match (A = B)
Supply Voltage Range	3.0 VDC to 18 VDC; enables direct interface with 3.3 V, 5 V, 12 V, and 15 V logic domains
Output Drive Capability	Drives two low-power TTL loads or one low-power Schottky TTL load across full temperature range
Propagation Delay	55 ns typical at 15 VDD/50 pF; ensures timing predictability in synchronous combinatorial logic
Input Protection	Double diode clamping on all inputs; prevents latch-up and ESD damage in noisy environments
Quiescent Current	≤1.0 µA max at 125°C/15 VDD; critical for ultra-low-power standby and battery-backed circuits
Operating Temperature	−55°C to +125°C; qualified for extended industrial, automotive under-hood, and aerospace applications

Pinout & Package

MC14077BDG is packaged in a Pb-free SOIC-14 (Case 751A) surface-mount package measuring 8.75 mm × 4.00 mm × 1.75 mm, with 1.27 mm pitch and gull-wing leads. The package is RoHS compliant and rated for 260°C lead temperature (8-second soldering).

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 4, 5, 8, 9, 11, 12	Input A/B per gate	Dedicated dual-input terminals for Gates A–D; unused inputs must be tied to VSS for stable XNOR behavior
3, 6, 10, 13	Output Y per gate	Buffered XNOR outputs; each drives ≥4.2 mA sink at 15 VDD/VOL = 1.5 V
7	VSS	Ground reference; all internal logic and protection circuitry referenced to this pin
14	VDD	Positive supply rail; powers all four gates and internal protection diodes

Key Features

Feature	Design Value
Wide Supply Range	3.0–18 VDC operation eliminates need for level shifters in multi-rail systems
High Noise Immunity	Input thresholds scale with VDD (VIH ≈ 0.7×VDD, VIL ≈ 0.3×VDD), ensuring robustness against supply ripple
Low-Power TTL Compatibility	Output drive meets LS-TTL voltage/current specs without external pull-ups or buffers
Pb-Free & RoHS Compliant	Meets global environmental regulations; "G" suffix denotes Pb-free SOIC-14 packaging
AEC-Q100 Qualified Variant	NLV14077BDR2G variant available for automotive applications requiring PPAP and unique site controls

Applications

Parity Generator / Checker	Level-Shifting Interface
Use Scenario: Detecting bit errors in serial data transmission or memory read-back paths. IC Role / Device Role / Timing Role: XNOR gate compares transmitted and received bits; output HIGH indicates match (even parity), LOW indicates mismatch. Use Value: Enables hardware-based error detection with zero latency and no microcontroller overhead at 15 VDD.	Use Scenario: Interfacing 3.3 V microcontroller GPIO to 12 V industrial sensor outputs. IC Role / Device Role / Timing Role: MC14077BDG acts as bidirectional logic-level translator using VDD = 12 V and inputs driven from 3.3 V sources. Use Value: Eliminates discrete resistor-divider networks while maintaining noise margin >3 V at 12 VDD.
Motor Direction Logic	Security Keypad Encoder
Use Scenario: Deriving forward/reverse enable signals from dual-channel quadrature encoder inputs. IC Role / Device Role / Timing Role: Two XNOR gates compare A/B phase signals to generate direction-select logic for H-bridge drivers. Use Value: Provides deterministic edge-aligned direction pulses with <110 ns worst-case skew between channels.	Use Scenario: Encoding 4×4 matrix keypad presses into unique 4-bit codes for microcontroller scan. IC Role / Device Role / Timing Role: Four XNOR gates implement row/column equality detection to identify pressed key coordinates. Use Value: Reduces firmware polling load by generating ready-to-read encoded outputs with <55 ns gate delay.

Parity Generator / Checker

Level-Shifting Interface

Use Scenario: Detecting bit errors in serial data transmission or memory read-back paths.

IC Role / Device Role / Timing Role: XNOR gate compares transmitted and received bits; output HIGH indicates match (even parity), LOW indicates mismatch.

Use Value: Enables hardware-based error detection with zero latency and no microcontroller overhead at 15 VDD.

Use Scenario: Interfacing 3.3 V microcontroller GPIO to 12 V industrial sensor outputs.

IC Role / Device Role / Timing Role: MC14077BDG acts as bidirectional logic-level translator using VDD = 12 V and inputs driven from 3.3 V sources.

Use Value: Eliminates discrete resistor-divider networks while maintaining noise margin >3 V at 12 VDD.

Motor Direction Logic

Security Keypad Encoder

Use Scenario: Deriving forward/reverse enable signals from dual-channel quadrature encoder inputs.

IC Role / Device Role / Timing Role: Two XNOR gates compare A/B phase signals to generate direction-select logic for H-bridge drivers.

Use Value: Provides deterministic edge-aligned direction pulses with <110 ns worst-case skew between channels.

Use Scenario: Encoding 4×4 matrix keypad presses into unique 4-bit codes for microcontroller scan.

IC Role / Device Role / Timing Role: Four XNOR gates implement row/column equality detection to identify pressed key coordinates.

Use Value: Reduces firmware polling load by generating ready-to-read encoded outputs with <55 ns gate delay.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad XNOR gate applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
CD4077BE	Same logic function and pinout; wider VDD range (3–18 V), but higher quiescent current (1 μA vs. 0.5 μA typ at 25°C)	Legacy through-hole DIP-14 only; not suitable for space-constrained SMT designs	Select CD4077BE only for DIP prototyping or legacy board rework where SOIC footprint is unavailable
74HC86N	Quad XOR (not XNOR); requires external inverter per channel to replicate MC14077BDG functionality	Optimized for 2–6 V operation; unsuitable above 6 V and lacks 125°C rating	Choose 74HC86N only for 5 V-only systems requiring faster speed (<20 ns @ 5 V), accepting added component count

Compared with CD4077BE and 74HC86N, the MC14077BDG uniquely combines true XNOR logic, 18 V tolerance, 125°C operation, and SOIC-14 packaging - making it the sole option for high-voltage, high-temperature, drop-in XNOR replacement in industrial PLC I/O modules.

Availability

MC14077BDG is available at Aetrix Electronics and suitable for industrial control panels, battery-powered instrumentation, and automotive body electronics requiring stable component supply across extended temperature and voltage ranges.

Supply support for MC14077BDG 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 sensing solutions for automotive, industrial, and cloud infrastructure markets.

The MC14077BDG belongs to onsemi's legacy CMOS logic family designed for high-noise-immunity, wide-supply digital interfacing in harsh environments - emphasizing reliability over speed in mission-critical control systems.

FAQ

What logic function does the MC14077BDG perform?

The MC14077BDG performs the exclusive-NOR (XNOR) logic function across four independent gates. Each gate outputs HIGH when both inputs are identical (both HIGH or both LOW), and LOW when inputs differ. This behavior is confirmed in the device marking ("MC14077B"), datasheet title ("Quad Exclusive NOR Gate"), and truth table in Figure 1 of the official onsemi datasheet Rev. 11.

Is the MC14077BDG pin-compatible with the CD4077B?

Yes, the MC14077BDG is a direct pin-compatible replacement for the CD4077B, as explicitly stated in the datasheet: "MC14077B − Replacement for CD4077B Type." Both devices use identical SOIC-14 pinouts, logic functions, and electrical behavior - enabling drop-in substitution without PCB changes in existing designs.

What is the maximum operating temperature for the MC14077BDG?

The MC14077BDG is rated for an ambient temperature range of −55°C to +125°C, as specified in the Maximum Ratings table (TA parameter). This rating is validated across all electrical characteristics including propagation delay, output drive, and quiescent current - making it suitable for under-hood automotive and industrial motor control applications.

Does the MC14077BDG require external pull-up resistors on inputs or outputs?

No, the MC14077BDG does not require external pull-up resistors. Its inputs feature double diode protection and defined VIH/VIL thresholds, while outputs are fully buffered and capable of directly driving two low-power TTL loads. Unused inputs must be tied to VSS (not left floating), per datasheet guidance in the "Unused inputs must always be tied…" note.

What does the "DG" suffix indicate in MC14077BDG?

"DG" denotes a Pb-free SOIC-14 package (Case 751A) with rail packaging (55 units per rail), as defined in the Ordering Information table. The "G" confirms RoHS compliance and Pb-free construction, while "D" specifies the SOIC-14 outline - distinguishing it from tape-and-reel variants (e.g., MC14077BDR2G) and legacy DIP versions.

MC14077BDG Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 4000B

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Active

Logic Type:: XNOR (Exclusive NOR)

Number of Circuits:: 4

Number of Inputs:: 2

Features:: -

Voltage - Supply:: 3V ~ 18V

Current - Quiescent (Max):: 1 µA

Current - Output High, Low:: 8.8mA, 8.8mA

Input Logic Level - Low:: 1.5V ~ 4V

Input Logic Level - High:: 3.5V ~ 11V

Max Propagation Delay @ V, Max CL:: 110ns @ 15V, 50pF

Operating Temperature:: -55°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SOIC

MC14077BDG FAQ

1.How can I place an order for MC14077BDG through Aetrix?

Please submit a Request for Quotation (RFQ) for MC14077BDG 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 MC14077BDG reliable?

The price and inventory of MC14077BDG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC14077BDG is usually 5 days.

3.What payment methods are accepted for MC14077BDG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC14077BDG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC14077BDG?

MC14077BDG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC14077BDG 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 MC14077BDG?

For technical support, including MC14077BDG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC14077BDG requirements.

6.How does Aetrix verify that MC14077BDG is sourced from the original manufacturer or authorized distributors?

All MC14077BDG 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 MC14077BDG meets industry standards.

7.What is the process for return or replacement of MC14077BDG?

All MC14077BDG units undergo pre-shipment inspection (PSI). If there is an issue with MC14077BDG, 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 MC14077BDG part is unused and in its original packaging.

Return procedure for MC14077BDG:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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