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

onsemi 74LCX08MTCX_SF501639

Name: 74LCX08MTCX_SF501639
Brand: onsemi
SKU: 74LCX08MTCX_SF501639
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74LCX08MTCX_SF501639

Manufacturer:: onsemi

Category:: Gates and Inverters

Package:: 14-TSSOP (0.173", 4.40mm Width)

Datasheet:: 74LCX08MTCX_SF501639.pdf

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

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Product details

Overview

74LCX08MTCX_SF501639 from Fairchild Semiconductor is a low-voltage quad 2-input AND gate 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 at 3.0V, and features power-down high-impedance I/O - used in mixed-voltage interface circuits within industrial control backplanes.

For engineers reviewing the 74LCX08MTCX_SF501639 datasheet, pinout, applications, or equivalent options, key selection criteria include 5V input tolerance, TSSOP-14 package compatibility, sub-6ns AC performance at 3.3V, quiescent current ≤10µA, and JEDEC MO-153-compliant thermal and mechanical behavior.

Technical Context

The 74LCX08MTCX_SF501639 implements four independent AND gates in a single monolithic CMOS die using advanced low-voltage process technology. Its input structure incorporates clamping diodes and robust ESD protection enabling safe operation with VI up to 7.0V while V_CC remains as low as 2.3V - critical for interfacing legacy 5V peripherals to modern 3.3V microcontrollers.

Each gate exhibits matched propagation delays (t_PHL/t_PLH ≤5.5ns @ V_CC=3.3V, CL=50pF) and low output skew (≤1.0ns), ensuring deterministic timing across all four channels. The device supports true 3-state-compatible operation via inherent high-impedance outputs during power-down or floating supply conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.3V–3.6V operating supply - enables direct integration into 3.3V systems without level translators
Input Voltage Tolerance	Up to 7.0V DC - allows safe connection to 5V TTL/CMOS buses without external clamping
Max Propagation Delay	5.5ns at V_CC = 3.3V, CL = 50pF - supports >100MHz toggle rates in critical path logic
Output Drive Strength	±24mA at V_CC = 3.0V - drives multiple LS-TTL loads or short PCB traces without buffering
I_CC Quiescent Current	≤10µA at V_CC = 3.3V, VI = V_CC/GND - minimizes standby power in battery-backed subsystems
ESD Rating (HBM)	>2000V - exceeds JEDEC JS-001 Class 2, reducing board-level ESD protection overhead
Operating Temperature	–40°C to +85°C - qualified for industrial ambient environments without derating

Pinout & Package

74LCX08MTCX_SF501639 is housed in a 14-lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153 compliant, 4.4mm body width, 0.65mm lead pitch, with exposed pad optional per design. Pin 1 is marked by a beveled corner or dot; pin 7 is GND, pin 14 is V_CC.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 4, 5, 8, 9, 11, 12	Input (A1/B1/A2/B2/A3/B3/A4/B4)	5V-tolerant CMOS inputs accepting 0–7V; must be tied HIGH/LOW - no floating allowed
3, 6, 10, 13	Output (Y1/Y2/Y3/Y4)	Push-pull CMOS outputs with ±24mA sink/source capability; high-Z when V_CC = 0V
7	GND	Primary ground reference; connects to system digital ground plane for noise control
14	V_CC	Positive supply rail (2.3–3.6V); requires local 100nF ceramic decoupling adjacent to pin

Key Features

Feature	Design Value
5V-tolerant inputs	Enables direct interconnection between 5V legacy peripherals and 3.3V SoCs without external voltage translators
Patented noise/EMI reduction circuitry	Reduces simultaneous switching noise (SSN) and radiated emissions in dense logic layouts
Power-down high-impedance I/O	Prevents bus contention and leakage paths during V_CC ramp-up/down or hot-swap events
Latch-up immunity	Exceeds JEDEC 78 Class II (≥100mA) - eliminates risk of destructive latch-up under transient overvoltage
Lead-free packaging	Complies with JEDEC J-STD-020B reflow profile - compatible with standard Pb-free SMT assembly lines

Applications

Industrial PLC Backplane Interface	Embedded Microcontroller GPIO Expansion
Use Scenario: Interfacing 5V sensor modules and actuator drivers to a 3.3V ARM Cortex-M4-based controller in a programmable logic controller. IC Role / Device Role / Timing Role: Level-shifting AND gate performing signal conditioning and enable gating for isolated I/O expansion slots. Use Value: Eliminates need for discrete level shifters and pull-up networks, reducing BOM count by 3 components per channel and cutting layout area by 40%.	Use Scenario: Expanding parallel control signals from an FPGA I/O bank to drive multiple LED indicators and status relays in medical diagnostic equipment. IC Role / Device Role / Timing Role: Quad AND gate implementing synchronous enable logic for grouped peripheral activation with deterministic setup/hold timing. Use Value: Provides matched 5.5ns propagation delay across all four channels, ensuring <1ns skew between indicator activation signals - critical for visual synchronization compliance.
Automotive Body Control Module	Test Equipment Signal Conditioning
Use Scenario: Translating 5V CAN transceiver status flags and switch inputs into 3.3V domain for an automotive BCM microcontroller. IC Role / Device Role / Timing Role: Input validation and logic gating element verifying valid wake-up conditions before MCU power-up sequencing. Use Value: With –40°C to +85°C rating and >2000V HBM ESD, it sustains reliable operation in under-hood temperature cycling and shop-floor ESD events.	Use Scenario: Gating and synchronizing stimulus signals in automated test equipment where multiple DUT interfaces require coordinated enable pulses. IC Role / Device Role / Timing Role: Timing-critical AND gate generating synchronized strobe signals for parallel data capture across multi-channel ADCs. Use Value: Sub-6ns delay and ≤1ns output skew ensure precise inter-channel timing alignment required for IEEE 1149.4 boundary-scan compliance verification.

Industrial PLC Backplane Interface

Embedded Microcontroller GPIO Expansion

Use Scenario: Interfacing 5V sensor modules and actuator drivers to a 3.3V ARM Cortex-M4-based controller in a programmable logic controller.

IC Role / Device Role / Timing Role: Level-shifting AND gate performing signal conditioning and enable gating for isolated I/O expansion slots.

Use Value: Eliminates need for discrete level shifters and pull-up networks, reducing BOM count by 3 components per channel and cutting layout area by 40%.

Use Scenario: Expanding parallel control signals from an FPGA I/O bank to drive multiple LED indicators and status relays in medical diagnostic equipment.

IC Role / Device Role / Timing Role: Quad AND gate implementing synchronous enable logic for grouped peripheral activation with deterministic setup/hold timing.

Use Value: Provides matched 5.5ns propagation delay across all four channels, ensuring <1ns skew between indicator activation signals - critical for visual synchronization compliance.

Automotive Body Control Module

Test Equipment Signal Conditioning

Use Scenario: Translating 5V CAN transceiver status flags and switch inputs into 3.3V domain for an automotive BCM microcontroller.

IC Role / Device Role / Timing Role: Input validation and logic gating element verifying valid wake-up conditions before MCU power-up sequencing.

Use Value: With –40°C to +85°C rating and >2000V HBM ESD, it sustains reliable operation in under-hood temperature cycling and shop-floor ESD events.

Use Scenario: Gating and synchronizing stimulus signals in automated test equipment where multiple DUT interfaces require coordinated enable pulses.

IC Role / Device Role / Timing Role: Timing-critical AND gate generating synchronized strobe signals for parallel data capture across multi-channel ADCs.

Use Value: Sub-6ns delay and ≤1ns output skew ensure precise inter-channel timing alignment required for IEEE 1149.4 boundary-scan compliance verification.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 2-input AND gate applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
74LVC08PW,118	Lower max V_I = 5.5V (not 7.0V); t_PD = 4.2ns @ 3.3V; same TSSOP-14 footprint	Not suitable for direct 5V bus interfacing without external clamping; better for pure 3.3V systems	Select when only 3.3V signaling is present and minimal propagation delay is prioritized over input voltage margin
SN74AHC08PWR	V_CC range wider (2–5.5V); no 5V input tolerance guarantee; higher ICC (20µA typical); same pinout	Requires external series resistors for 5V input protection; less robust in mixed-voltage noise environments	Select when operating exclusively at 5V or needing broader V_CC flexibility, accepting added protection circuitry

Compared with 74LVC08PW,118 and SN74AHC08PWR, the 74LCX08MTCX_SF501639 uniquely guarantees 7.0V input tolerance at 2.3–3.6V V_CC, making it the only option among the three that eliminates external clamping components in 5V-to-3.3V translation scenarios.

Availability

74LCX08MTCX_SF501639 is available at Aetrix Electronics and suitable for industrial automation, embedded control, and test instrumentation requiring stable component supply across extended temperature ranges and mixed-voltage signal integrity.

Supply support for 74LCX08MTCX_SF501639 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

Fairchild Semiconductor was a U.S.-based semiconductor company specializing in analog and mixed-signal ICs, power management, and logic families before its acquisition by ON Semiconductor in 2016. Its legacy logic products remain widely deployed in industrial and automotive systems.

The 74LCX08 belongs to Fairchild's Low-Voltage CMOS (LCX) logic family, engineered specifically for seamless 3.3V/5V domain bridging in space-constrained, noise-sensitive applications such as PLCs and portable instrumentation.

FAQ

What is the maximum input voltage rating for 74LCX08MTCX_SF501639?

The 74LCX08MTCX_SF501639 supports DC input voltages up to 7.0V regardless of V_CC level - a key differentiator enabling direct connection to 5V logic buses without external protection. This rating is specified in the Absolute Maximum Ratings table and validated across –40°C to +85°C ambient conditions. Exceeding 7.0V risks permanent damage to internal input clamp structures.

Does 74LCX08MTCX_SF501639 support true 3-state operation?

No, the 74LCX08MTCX_SF501639 does not provide active 3-state (high-impedance) control via an enable pin. However, it exhibits power-down high-impedance behavior: both inputs and outputs enter high-Z state when V_CC = 0V or is unpowered. This passive feature prevents bus contention during power sequencing but does not allow dynamic tri-state control during normal operation.

What is the recommended decoupling for 74LCX08MTCX_SF501639?

A minimum 100nF X7R ceramic capacitor placed within 2mm of pin 14 (V_CC) and pin 7 (GND) is required for stable operation. For systems with high-frequency switching noise, add a 10nF capacitor in parallel. The TSSOP-14 package's 0.65mm pitch supports standard 0603 or 0402 footprints. Avoid shared vias between decoupling and signal return paths to maintain low-inductance grounding.

Can unused inputs on 74LCX08MTCX_SF501639 be left floating?

No - unused inputs on the 74LCX08MTCX_SF501639 must be externally tied to either V_CC or GND. Floating inputs cause increased ICC, unpredictable output states, and potential oscillation due to intermediate voltage levels triggering both NMOS and PMOS input transistors. The datasheet explicitly mandates this in Recommended Operating Conditions Note 3.

Is 74LCX08MTCX_SF501639 RoHS compliant and lead-free?

Yes, the 74LCX08MTCX_SF501639 is lead-free and complies with JEDEC J-STD-020B reflow standards. Its TSSOP package uses matte tin (Sn) lead finish and meets RoHS Directive 2011/65/EU requirements. No exemptions apply, and the device is rated for peak reflow temperatures up to 260°C for 30 seconds - fully compatible with standard Pb-free SMT processes.

74LCX08MTCX_SF501639 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74LCX

Package/Case:: 14-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

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-TSSOP

74LCX08MTCX_SF501639 FAQ

1.How can I place an order for 74LCX08MTCX_SF501639 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74LCX08MTCX_SF501639 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 74LCX08MTCX_SF501639 reliable?

The price and inventory of 74LCX08MTCX_SF501639 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LCX08MTCX_SF501639 is usually 5 days.

3.What payment methods are accepted for 74LCX08MTCX_SF501639?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LCX08MTCX_SF501639 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74LCX08MTCX_SF501639?

74LCX08MTCX_SF501639 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74LCX08MTCX_SF501639 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 74LCX08MTCX_SF501639?

For technical support, including 74LCX08MTCX_SF501639 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LCX08MTCX_SF501639 requirements.

6.How does Aetrix verify that 74LCX08MTCX_SF501639 is sourced from the original manufacturer or authorized distributors?

All 74LCX08MTCX_SF501639 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 74LCX08MTCX_SF501639 meets industry standards.

7.What is the process for return or replacement of 74LCX08MTCX_SF501639?

All 74LCX08MTCX_SF501639 units undergo pre-shipment inspection (PSI). If there is an issue with 74LCX08MTCX_SF501639, 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 74LCX08MTCX_SF501639 part is unused and in its original packaging.

Return procedure for 74LCX08MTCX_SF501639:

1.Submit a request within 90 days.

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

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