My Inquiry
My Account
onsemi MC74LCX14DR2
- Part No.:
- MC74LCX14DR2
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC74LCX14DR2.pdf
- Description:
- IC INVERT SCHMITT 6CH 1IN 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,209
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MC74LCX14DR2 from onsemi is a low-voltage CMOS hex Schmitt-trigger inverter operating from 1.65 V to 5.5 V, featuring 5.5 V-tolerant inputs, 24 mA balanced output drive, and near-zero static supply current (10 µA). It functions as a noise-immune line receiver for slow-rising signals in mixed-voltage digital interfaces.
For engineers reviewing the MC74LCX14DR2 datasheet, pinout, applications, or equivalent options, key selection criteria include input hysteresis voltage (0.7 V typical at 5.5 V), propagation delay (5.6 ns max at 4.5–5.5 V), 5 V-tolerant input compatibility, and SOIC-14 package footprint.
Technical Context
The MC74LCX14DR2 implements six independent Schmitt-trigger inverters with hysteresis thresholds (VT+ = 3.6 V, VT− = 1.2 V at VCC = 5.5 V), enabling robust noise rejection on slow or noisy input edges. Its TTL-compatible outputs and high-impedance inputs reduce loading on upstream drivers.
Designed for mixed-supply systems, it supports direct interfacing between 3.3 V/2.5 V logic domains and legacy 5 V TTL without level shifters. Input leakage current remains ≤ ±5.0 µA across −40 °C to +125 °C, ensuring stable operation in industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 5.5 V - enables single-supply operation across LVTTL, LVCMOS, and 5 V TTL systems |
| Input Voltage Tolerance | −0.5 V to +6.5 V - allows safe connection to 5 V sources without external clamping |
| Hysteresis Voltage (VH) | 0.7 V typical at 5.5 V - provides 700 mV noise margin against false triggering on slow edges |
| Propagation Delay | 5.6 ns max at 4.5–5.5 V - supports >100 MHz signal conditioning in clock/data recovery paths |
| Output Drive | ±24 mA - drives standard TTL loads and multiple CMOS inputs without buffering |
| Quiescent ICC | 10 µA - reduces standby power in battery-backed or energy-sensitive applications |
| Operating Temperature | −40 °C to +125 °C - qualified for automotive under-hood and industrial control environments |
Pinout & Package
MC74LCX14DR2 is packaged in a 14-pin SOIC (Case 751A), with 0.150-inch body width, 1.27 mm pitch, and Pb-free finish. Pin 1 is marked by notch or bevel; pin 7 is GND, pin 14 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Data Input (A1–A6) | Schmitt-trigger inputs accepting slow-rising/falling waveforms; 5.5 V tolerant |
| 2, 4, 6, 8, 10, 12 | Inverted Output (Y1–Y6) | CMOS/TTL-compatible outputs with ±24 mA sink/source capability |
| 7 | GND | Ground reference for all logic and power domains; must be low-impedance |
| 14 | VCC | Primary supply rail (1.65–5.5 V); decoupling capacitor required within 1 cm |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger hysteresis | Enables reliable signal squaring of slow or noisy inputs (e.g., mechanical switch debouncing, sensor outputs) |
| 5 V-tolerant inputs | Eliminates need for external level-shifting circuitry when interfacing with legacy 5 V logic |
| 24 mA balanced output drive | Directly drives up to 10 LSTTL loads or 20+ CMOS inputs without fanout buffers |
| 10 µA quiescent current | Reduces system-level standby power by >95% versus standard LS or HC logic families |
| Pb-free, RoHS-compliant | Meets IPC/JEDEC J-STD-020 reflow profile and automotive AEC-Q200 material requirements |
Applications
| Industrial Sensor Interface | Automotive Body Control |
|---|---|
Use Scenario: Conditioning analog sensor outputs (e.g., thermistor, potentiometer) with slow slew rates into clean digital logic levels. IC Role / Device Role / Timing Role: Schmitt-trigger inverter acting as a noise-immune threshold comparator and signal conditioner. Use Value: Eliminates external RC filtering and reduces BOM count while maintaining >700 mV noise immunity at 5.5 V supply. | Use Scenario: Debouncing mechanical switches in door latch, seat position, or mirror adjustment modules. IC Role / Device Role / Timing Role: Six independent hysteresis inverters providing hardware-level contact bounce suppression. Use Value: Reduces MCU GPIO usage and firmware interrupt load; operates reliably over −40 °C to +125 °C ambient. |
| Legacy System Integration | Low-Power IoT Node |
Use Scenario: Interfacing modern 3.3 V microcontrollers with older 5 V peripheral buses (e.g., UART lines, reset signals). IC Role / Device Role / Timing Role: Level-translating buffer with built-in hysteresis for noise-prone board-to-board connections. Use Value: No external resistors or active translators needed; maintains signal integrity across mixed-voltage domains. | Use Scenario: Signal conditioning for wake-up inputs (e.g., PIR motion sensor, button press) in battery-powered edge devices. IC Role / Device Role / Timing Role: Ultra-low-power Schmitt trigger enabling deterministic wake-up with <10 µA quiescent draw. Use Value: Extends battery life by minimizing sleep-mode current while rejecting EMI-induced false triggers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex Schmitt-trigger inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC14APWR | Lower VCC range (1.65–3.6 V), no 5 V input tolerance; 24 mA drive retained | Not suitable for 5 V interface; requires external clamping or level shifting | Select when system is fully 3.3 V and cost-per-unit is prioritized |
| 74HC14D,653 | Wider VCC range (2–6 V), but only 6 V absolute max input; higher ICC (≤1 µA vs. 10 µA) | Higher static power; lacks guaranteed 5 V-tolerant input specification per datasheet | Select for general-purpose hysteresis where 5 V interface is not required |
Compared with SN74LVC14APWR and 74HC14D,653, the MC74LCX14DR2 uniquely combines 5.5 V input tolerance, 10 µA quiescent current, and full industrial temperature support-making it the only option for robust, low-power, mixed-voltage Schmitt-triggering in space-constrained SOIC layouts.
Availability
MC74LCX14DR2 is available at Aetrix Electronics and suitable for industrial sensor interface, automotive body control, and legacy system integration requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for MC74LCX14DR2 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The MC74LCX14DR2 belongs to the LCX low-voltage CMOS logic family, designed specifically for high-speed, low-power, mixed-voltage interoperability in space- and power-constrained embedded systems.
FAQ
What is the maximum input voltage rating for MC74LCX14DR2?
The MC74LCX14DR2 supports DC input voltages from −0.5 V to +6.5 V, with a guaranteed 5.5 V tolerance during normal operation. This allows safe interfacing with 5 V TTL outputs without external protection diodes or level shifters, as confirmed in the Absolute Maximum Ratings table of the official onsemi datasheet.
Does MC74LCX14DR2 support operation at 1.8 V supply?
Yes, MC74LCX14DR2 is fully specified for operation at 1.65 V to 5.5 V, including 1.8 V. At 1.8 V, it delivers 24 mA output drive, 10 µA quiescent current, and hysteresis voltage of 0.1–0.9 V (per DC Electrical Characteristics), making it suitable for ultra-low-voltage portable and IoT designs.
What is the propagation delay of MC74LCX14DR2 at 3.3 V?
At VCC = 3.3 V and TA = −40 °C to +85 °C, the MC74LCX14DR2 exhibits a maximum propagation delay (tPLH/tPHL) of 6.5 ns, as specified in the AC Electrical Characteristics table. This value ensures reliable timing in high-speed digital signal conditioning and clock shaping applications.
Is MC74LCX14DR2 pin-compatible with MC74LCX04?
Yes, MC74LCX14DR2 shares identical pin configuration and function with MC74LCX04, as explicitly stated in the datasheet: "Pin configuration and function are the same as the MC74LCX04, but the inputs have hysteresis." Both use SOIC-14 packaging with matching A1–A6/Y1–Y6 assignments, enabling drop-in replacement where Schmitt-trigger behavior is required.
What package type does MC74LCX14DR2 use?
MC74LCX14DR2 uses the SOIC-14 narrow-body package (Case 751A), with 1.27 mm lead pitch, 8.55–8.75 mm body length, and Pb-free (RoHS-compliant) finish. The "R2" in the part number denotes tape-and-reel packaging (2500 units per reel), per onsemi's Ordering Information table.
MC74LCX14DR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74LCX
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Inverter
- Number of Circuits:
- 6
- Number of Inputs:
- 1
- Features:
- Schmitt Trigger
- Voltage - Supply:
- 2V ~ 3.6V
- Current - Quiescent (Max):
- 10 µA
- Current - Output High, Low:
- 24mA, 24mA
- Input Logic Level - Low:
- 0.4V ~ 0.6V
- Input Logic Level - High:
- 1.7V ~ 2.2V
- Max Propagation Delay @ V, Max CL:
- 6.5ns @ 3.3V, 50pF
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MC74LCX14DR2 FAQ
1.How can I place an order for MC74LCX14DR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74LCX14DR2 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 MC74LCX14DR2 reliable?
The price and inventory of MC74LCX14DR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74LCX14DR2 is usually 5 days.
3.What payment methods are accepted for MC74LCX14DR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74LCX14DR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74LCX14DR2?
MC74LCX14DR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74LCX14DR2 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 MC74LCX14DR2?
For technical support, including MC74LCX14DR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74LCX14DR2 requirements.
6.How does Aetrix verify that MC74LCX14DR2 is sourced from the original manufacturer or authorized distributors?
All MC74LCX14DR2 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 MC74LCX14DR2 meets industry standards.
7.What is the process for return or replacement of MC74LCX14DR2?
All MC74LCX14DR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC74LCX14DR2, 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 MC74LCX14DR2 part is unused and in its original packaging.
Return procedure for MC74LCX14DR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC74LCX14DR2 Tags
-
SN74LVC1G14DBVR
Texas Instruments
-
SN74LVC1G14DCKR
Texas Instruments
-
SN74AHC1G14DBVR
Texas Instruments
-
SN74LVC1G08DBVR
Texas Instruments
-
SN74LVC1G08DCKR
Texas Instruments
-
SN74LVC1G32DCKR
Texas Instruments
-
SN74LVC1G04DBVR
Texas Instruments
.jpg)
-
74LVC1G08GW,125
Nexperia USA Inc.
-
SN74LVC1G04DCKR
Texas Instruments
-
SN74AHC1G08DBVR
Texas Instruments
-
SN74LVC1G32DBVR
Texas Instruments
-
SN74AHCT1G08DBVR
Texas Instruments
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
