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

onsemi 74LCX08M

Name: 74LCX08M
Brand: onsemi
SKU: 74LCX08M
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74LCX08M

Manufacturer:: onsemi

Category:: Gates and Inverters

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

Datasheet:: 74LCX08M.pdf

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

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Product details

Overview

74LCX08M from ON Semiconductor is a low-voltage quad 2-input AND gate IC with 5V-tolerant inputs, designed for level-shifting between 3.3V and 5V logic domains. It operates from 2.3V to 3.6V V_CC, delivers ≤5.5ns propagation delay at 3.3V, supports ±24mA output drive, and features power-down high-impedance I/O for bus-hold compatibility in mixed-voltage systems.

For engineers reviewing the 74LCX08M datasheet, pinout, applications, or equivalent options, this device is selected for voltage translation in interface logic, low-power portable digital control, and 3.3V/5V system interconnect where input overvoltage tolerance and fast switching are required.

Technical Context

The 74LCX08M implements four independent non-inverting AND gates using advanced CMOS process technology optimized for speed–power trade-off. Its input structure allows safe operation with signals up to 7V while powered from 2.3–3.6V, enabling direct connection to legacy 5V buses without external level shifters.

Each gate exhibits matched propagation delays (t_PHL/t_PLH ≤5.5ns @ V_CC=3.3V, C_L=50pF), low dynamic noise (V_OLP/V_OLV ±0.6–0.8V), and controlled edge rates (∆t/∆V ≤10ns/V) to minimize crosstalk and EMI in dense PCB layouts.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.3V–3.6V - Enables stable operation in 3.3V supply rails with margin for droop or ripple.
Input Voltage Tolerance	Up to 7V - Allows direct interfacing with 5V TTL/CMOS outputs without clamping diodes or resistors.
t_PD Max	5.5ns @ V_CC=3.3V - Supports >100MHz toggle rates in synchronous logic paths.
I_OH/I_OL	±24mA @ V_CC=3.0V - Drives multiple LS-TTL loads or short PCB traces without buffering.
I_CC Max	10µA - Ensures sub-mW static power per gate, critical for battery-powered devices.
Input Leakage	±5.0µA - Minimizes unintended current paths in high-impedance or sleep-mode circuits.

Pinout & Package

74LCX08M is housed in a 14-lead SOIC (JEDEC MS-012, 0.150" narrow body) package with standard dual-inline pinout and gull-wing leads.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 4, 5, 8, 9, 11, 12	Gate Inputs (A1/B1, A2/B2, A3/B3, A4/B4)	Four independent AND gate input pairs accepting 5V-tolerant logic levels.
3, 6, 10, 13	Gate Outputs (Y1–Y4)	CMOS-compatible outputs with ±24mA drive capability and high-impedance state during power-down.
7	GND	Ground reference for all logic and power domains; must be low-inductance connected.
14	V_CC	Primary supply pin for core logic; decoupling capacitor required within 1cm of pin.

Key Features

Feature	Design Value
5V-tolerant inputs	Enables seamless 3.3V-to-5V bidirectional signal translation without external components.
Power-down high-Z I/O	Prevents bus contention and leakage during standby, supporting hot-swap and partial-power-down modes.
Low propagation skew	≤1.0ns max output-to-output skew ensures deterministic timing across all four gates.
ESD robustness	Human Body Model >2000V - Reduces risk of field failure during handling and assembly.

Applications

Industrial PLC I/O Modules	Portable Medical Device Interfaces
Use Scenario: Interfacing 5V sensor outputs to 3.3V microcontroller GPIOs in programmable logic controllers. IC Role / Device Role / Timing Role: Level-translating AND gate performing signal conditioning and enable gating before ADC sampling. Use Value: Eliminates need for discrete resistor-divider networks or dedicated level translators, reducing BOM count and board area.	Use Scenario: Synchronizing 5V display controller handshaking signals with 3.3V ARM-based host processor in handheld diagnostics units. IC Role / Device Role / Timing Role: Glue logic element ensuring valid data window alignment and preventing metastability on control lines. Use Value: Guarantees <5.5ns delay matching across parallel control paths, preserving setup/hold timing margins.
Automotive Infotainment Head Units	IoT Edge Gateway Signal Conditioning
Use Scenario: Enabling 5V audio codec reset signals only when 3.3V system power is stable in automotive infotainment head units. IC Role / Device Role / Timing Role: Power-sequencing AND gate combining V_{CC_OK} and RESET# to generate synchronized peripheral reset. Use Value: Prevents spurious initialization by enforcing strict voltage-rail dependency with no additional timing components.	Use Scenario: Gating 5V UART TX/RX lines from legacy peripherals into 3.3V ESP32-based wireless gateways. IC Role / Device Role / Timing Role: Bidirectional logic-level translator with direction-independent input tolerance and rail-agnostic output swing. Use Value: Supports mixed-voltage serial communication without direction-control pins or external biasing.

Industrial PLC I/O Modules

Portable Medical Device Interfaces

Use Scenario: Interfacing 5V sensor outputs to 3.3V microcontroller GPIOs in programmable logic controllers.

IC Role / Device Role / Timing Role: Level-translating AND gate performing signal conditioning and enable gating before ADC sampling.

Use Value: Eliminates need for discrete resistor-divider networks or dedicated level translators, reducing BOM count and board area.

Use Scenario: Synchronizing 5V display controller handshaking signals with 3.3V ARM-based host processor in handheld diagnostics units.

IC Role / Device Role / Timing Role: Glue logic element ensuring valid data window alignment and preventing metastability on control lines.

Use Value: Guarantees <5.5ns delay matching across parallel control paths, preserving setup/hold timing margins.

Automotive Infotainment Head Units

IoT Edge Gateway Signal Conditioning

Use Scenario: Enabling 5V audio codec reset signals only when 3.3V system power is stable in automotive infotainment head units.

IC Role / Device Role / Timing Role: Power-sequencing AND gate combining V_{CC_OK} and RESET# to generate synchronized peripheral reset.

Use Value: Prevents spurious initialization by enforcing strict voltage-rail dependency with no additional timing components.

Use Scenario: Gating 5V UART TX/RX lines from legacy peripherals into 3.3V ESP32-based wireless gateways.

IC Role / Device Role / Timing Role: Bidirectional logic-level translator with direction-independent input tolerance and rail-agnostic output swing.

Use Value: Supports mixed-voltage serial communication without direction-control pins or external biasing.

Equivalent & Alternatives

The following parts are listed as comparable options for similar AND gate logic applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
74LVC08APW	Lower V_CC min (1.65V), no 5V-tolerant inputs - requires external clamping for 5V signals.	Suitable only in fully 3.3V-only systems; not drop-in for 5V interface scenarios.	Select when full 5V tolerance is unnecessary and ultra-low-voltage operation (<2.0V) is required.
SN74AHC08DR	Wider V_CC range (2V–5.5V), but inputs not 5V-tolerant above V_CC; higher ICC (20µA).	Requires V_CC=5V to accept 5V inputs - incompatible with 3.3V-supplied 5V-input use cases.	Choose only if system uses 5V supply and needs higher drive strength (±25mA) with identical timing.

Compared with 74LVC08APW and SN74AHC08DR, the 74LCX08M uniquely enables true 3.3V-core operation with native 5V input acceptance - eliminating external protection circuitry and simplifying layout in mixed-voltage designs where supply rail isolation is mandatory.

Availability

74LCX08M is available at Aetrix Electronics and suitable for industrial PLC I/O modules, portable medical device interfaces, and automotive infotainment head units requiring stable component supply, long-term lifecycle support, and guaranteed lead-free compliance.

Supply support for 74LCX08M 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 solutions for automotive, industrial, and communications markets.

The 74LCX08M belongs to the LCX family of low-voltage, 5V-tolerant logic ICs engineered specifically for voltage translation and mixed-signal interfacing in portable, battery-powered, and space-constrained embedded systems.

FAQ

What is the maximum input voltage the 74LCX08M can safely accept?

The 74LCX08M accepts DC input voltages up to +7.0V regardless of V_CC level, as specified in its Absolute Maximum Ratings table. This 5V-tolerant feature allows direct connection to 5V logic outputs while operating from a 2.3–3.6V supply - a key differentiator from standard LVC or AHC families. Always ensure VI does not exceed –0.5V to +7.0V to prevent permanent damage to the 74LCX08M.

Can the 74LCX08M operate at 2.5V V_CC and still meet timing specifications?

Yes - the 74LCX08M is fully characterized down to 2.3V V_CC. At 2.5V (within the 2.3–2.7V range), t_PHL/t_PLH is guaranteed ≤6.6ns with CL=30pF, and output drive remains ≥±8mA. These parameters are explicitly listed in the AC Electrical Characteristics table of the official datasheet, confirming reliable operation across the entire 2.3–3.6V range for the 74LCX08M.

Does the 74LCX08M support 3-state (high-impedance) outputs?

No - the 74LCX08M does not include output enable (OE) control or true 3-state functionality. However, it features power-down high-impedance inputs and outputs when V_CC = 0V, which prevents back-driving and bus contention during power sequencing. For active 3-state control, consider alternatives like the 74LCX125 or 74LCX244 - the 74LCX08M is strictly a quad 2-input AND gate with push-pull outputs.

What is the recommended decoupling for the 74LCX08M in high-speed designs?

A minimum 0.1µF ceramic capacitor placed within 1cm of the 74LCX08M's V_CC (pin 14) and GND (pin 7) is required to suppress supply noise and maintain signal integrity. For systems with multiple 74LCX08M devices or tight timing margins, add a bulk 4.7µF tantalum or polymer capacitor nearby. The 74LCX08M's low CPD (25pF) and fast edges make proper local decoupling essential to avoid VOLP/VOLV overshoot exceeding ±0.8V.

Is the 74LCX08M pin-compatible with other 14-pin quad AND gate packages?

The 74LCX08M shares the industry-standard 14-pin SOIC pinout (M14A) with 74-series AND gates including 74HC08, 74HCT08, and 74LVC08A - enabling footprint reuse in many designs. However, functional compatibility requires verification of voltage tolerances and drive strength: unlike those parts, only the 74LCX08M supports 5V inputs at 3.3V V_CC, making it non-interchangeable without schematic review.

74LCX08M Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74LCX

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

Packaging:: Tube

Product Status:: Obsolete

Logic Type:: AND Gate

Number of Circuits:: 4

Number of Inputs:: 2

Features:: -

Voltage - Supply:: 2V ~ 3.6V

Current - Quiescent (Max):: 10 µA

Current - Output High, Low:: 24mA, 24mA

Input Logic Level - Low:: 0.7V ~ 0.8V

Input Logic Level - High:: 1.7V ~ 2V

Max Propagation Delay @ V, Max CL:: 5.5ns @ 3.3V, 50pF

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SOIC

74LCX08M FAQ

1.How can I place an order for 74LCX08M through Aetrix?

Please submit a Request for Quotation (RFQ) for 74LCX08M 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 74LCX08M reliable?

The price and inventory of 74LCX08M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LCX08M is usually 5 days.

3.What payment methods are accepted for 74LCX08M?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LCX08M transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74LCX08M?

74LCX08M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74LCX08M 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 74LCX08M?

For technical support, including 74LCX08M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LCX08M requirements.

6.How does Aetrix verify that 74LCX08M is sourced from the original manufacturer or authorized distributors?

All 74LCX08M 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 74LCX08M meets industry standards.

7.What is the process for return or replacement of 74LCX08M?

All 74LCX08M units undergo pre-shipment inspection (PSI). If there is an issue with 74LCX08M, 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 74LCX08M part is unused and in its original packaging.

Return procedure for 74LCX08M:

1.Submit a request within 90 days.

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

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