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

onsemi 74LCX00SJX

Name: 74LCX00SJX
Brand: onsemi
SKU: 74LCX00SJX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74LCX00SJX

Manufacturer:: onsemi

Category:: Gates and Inverters

Package:: 14-SOIC (0.209", 5.30mm Width)

Datasheet:: 74LCX00SJX.pdf

Description:: IC GATE NAND 4CH 2-INP 14SOP

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Product details

Overview

74LCX00SJX from ON Semiconductor is a low-voltage quad 2-input NAND 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 ≤5.2ns 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 74LCX00SJX datasheet, pinout, applications, or equivalent options, this device is selected for voltage translation in industrial control backplanes, FPGA I/O expansion interfaces, legacy peripheral bridging, and low-power embedded system glue logic where input overvoltage resilience and sub-6ns timing are required.

Technical Context

The 74LCX00SJX implements four independent NAND gates using advanced CMOS process technology optimized for speed–power trade-off at 3.3V operation. Its input structure includes protection diodes enabling safe 5.5V DC input tolerance while powered from 2.3–3.6V, eliminating external level-shifters in mixed-supply designs.

All outputs exhibit rail-to-rail swing with defined VOH/VOL across load conditions (e.g., VOH ≥ 2.2V at IOH = –12mA, VOL ≤ 0.55V at IOL = 24mA), and dynamic noise suppression circuitry reduces simultaneous switching output (SSO) noise per LCX family design.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.3V–3.6V operating supply - enables direct interface with 3.3V LVTTL/LVCMOS systems without regulator overhead.
Input Voltage Tolerance	0V–5.5V - allows connection to 5V microcontrollers or legacy peripherals without clamping resistors or translators.
t_PD Max	5.2ns at V_CC = 3.3V, CL = 50pF - supports >100MHz toggle rates in critical path logic stages.
I_OH/I_OL	±24mA at V_CC = 3.0V - drives multiple standard TTL loads or fan-out of 10+ LVTTL inputs.
I_CC Max	10µA quiescent current - minimizes standby power in battery-backed or always-on subsystems.
ESD Rating	HBM > 2000V - meets industrial-grade robustness requirements without additional board-level protection.

Pinout & Package

74LCX00SJX uses a 14-lead SOP (EIAJ TYPE II, 5.3mm wide) package, designated M14D per Fairchild/ON Semiconductor ordering nomenclature. The device has no internal power sequencing requirements and supports hot-swap tolerant operation due to power-down high-impedance I/O.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 4, 5, 8, 9, 12, 13	Input (A1/B1/A2/B2/A3/B3/A4/B4)	5V-tolerant CMOS inputs - may be driven directly from 5V sources without damage or logic corruption.
3, 6, 10, 11	Output (Y1/Y2/Y3/Y4)	Push-pull CMOS outputs - deliver full rail-swing logic levels with ±24mA sink/source capability at 3.0V.
7	GND	Dedicated ground reference - must be connected to system ground plane to ensure noise immunity and correct threshold referencing.
14	V_CC	Primary supply pin - accepts 2.3–3.6V only; exceeding 3.6V risks parametric shift or reliability degradation.

Key Features

Feature	Design Value
5V-tolerant inputs	Enables seamless interfacing between 3.3V logic and 5V peripherals without external components or voltage dividers.
Power-down high-Z I/O	Inputs and outputs enter high-impedance state when V_CC = 0V - prevents back-driving and bus contention during power sequencing.
Low dynamic noise	Proprietary EMI reduction circuitry limits simultaneous switching output (SSO) noise, easing PCB layout in noise-sensitive analog-digital hybrids.
Latch-up immunity	Exceeds JEDEC 78 Class II latch-up specification - ensures robust operation under transient overvoltage or ESD events.

Applications

Industrial PLC Backplane Interface	FPGA I/O Expansion Bridge
Use Scenario: Interfacing 5V sensor modules and actuator drivers to a 3.3V FPGA-based controller in modular automation hardware. IC Role / Device Role / Timing Role: Level-translating NAND gate performing signal inversion and voltage domain isolation on discrete control lines. Use Value: Eliminates need for discrete MOSFET translators or dual-supply buffers, reducing BOM count and layout area by 30% per channel.	Use Scenario: Extending FPGA GPIO count via parallel bus decoding and enable gating for add-on daughterboards. IC Role / Device Role / Timing Role: Glue logic element providing active-low chip select generation and address decoding with sub-6ns latency. Use Value: Enables deterministic timing closure in FPGA-to-peripheral paths where setup/hold margins are constrained by 100MHz clock domains.
Legacy Peripheral Adapter	Low-Power Embedded System Glue Logic
Use Scenario: Connecting RS-232 transceivers or 5V EEPROMs to modern 3.3V microcontroller subsystems in field-deployed instrumentation. IC Role / Device Role / Timing Role: Input-tolerant NAND gate used as bidirectional data direction controller and handshake signal conditioner. Use Value: Maintains signal integrity across voltage domains while consuming <10µA static current - extends battery life in portable test equipment.	Use Scenario: Implementing reset synchronization, watchdog enable gating, and status LED logic in compact IoT edge nodes. IC Role / Device Role / Timing Role: Low-power combinatorial logic block managing power-state transitions and fault signaling between MCU and PMIC. Use Value: Delivers reliable logic function at 2.3V minimum V_CC, supporting brown-out operation down to 2.0V with guaranteed timing margins.

Industrial PLC Backplane Interface

FPGA I/O Expansion Bridge

Use Scenario: Interfacing 5V sensor modules and actuator drivers to a 3.3V FPGA-based controller in modular automation hardware.

IC Role / Device Role / Timing Role: Level-translating NAND gate performing signal inversion and voltage domain isolation on discrete control lines.

Use Value: Eliminates need for discrete MOSFET translators or dual-supply buffers, reducing BOM count and layout area by 30% per channel.

Use Scenario: Extending FPGA GPIO count via parallel bus decoding and enable gating for add-on daughterboards.

IC Role / Device Role / Timing Role: Glue logic element providing active-low chip select generation and address decoding with sub-6ns latency.

Use Value: Enables deterministic timing closure in FPGA-to-peripheral paths where setup/hold margins are constrained by 100MHz clock domains.

Legacy Peripheral Adapter

Low-Power Embedded System Glue Logic

Use Scenario: Connecting RS-232 transceivers or 5V EEPROMs to modern 3.3V microcontroller subsystems in field-deployed instrumentation.

IC Role / Device Role / Timing Role: Input-tolerant NAND gate used as bidirectional data direction controller and handshake signal conditioner.

Use Value: Maintains signal integrity across voltage domains while consuming <10µA static current - extends battery life in portable test equipment.

Use Scenario: Implementing reset synchronization, watchdog enable gating, and status LED logic in compact IoT edge nodes.

IC Role / Device Role / Timing Role: Low-power combinatorial logic block managing power-state transitions and fault signaling between MCU and PMIC.

Use Value: Delivers reliable logic function at 2.3V minimum V_CC, supporting brown-out operation down to 2.0V with guaranteed timing margins.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC00APWR	Wider V_CC range (1.65–3.6V); lower t_PD (4.2ns @ 3.3V); no 5V-tolerant inputs (max VI = V_CC + 0.5V).	Requires external clamping or series resistors when interfacing to 5V sources - unsuitable for direct 5V input scenarios.	Select when operating below 2.3V or requiring faster propagation; avoid if 5V-tolerant inputs are mandatory.
74ALVC00MTCX	Same 5V-tolerant input spec; higher drive (±24mA @ 2.5V); slightly higher ICC (20µA max); identical SOP-14 footprint.	Compatible drop-in replacement in most 74LCX00SJX layouts; better performance at 2.5V but less margin at 2.3V min.	Preferred for new designs targeting 2.5V operation or needing tighter skew specs; validated pin-compatible alternative.

Compared with SN74LVC00APWR and 74ALVC00MTCX, the 74LCX00SJX uniquely balances 5V input tolerance, 2.3V minimum operation, and industrial-grade ESD/latch-up robustness - making it optimal for legacy-to-modern interface applications where voltage domain bridging is non-negotiable.

Availability

74LCX00SJX is available at Aetrix Electronics and suitable for industrial PLC backplanes, FPGA I/O expansion bridges, and legacy peripheral adapters requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature extremes.

Supply support for 74LCX00SJX 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 sensor solutions for automotive, industrial, and cloud infrastructure markets.

The 74LCX00SJX belongs to the legacy LCX low-voltage logic family, engineered specifically for mixed-voltage system interoperability - prioritizing 5V-tolerant inputs, sub-6ns speed, and ultra-low static power in space-constrained industrial control applications.

FAQ

What is the absolute maximum input voltage rating for 74LCX00SJX?

The 74LCX00SJX supports DC input voltages from –0.5V to +7.0V, with recommended operation up to +5.5V. This 5V-tolerant capability allows direct connection to 5V logic families without external protection, provided V_CC remains within 2.3–3.6V. Exceeding 7.0V risks permanent damage per Absolute Maximum Ratings.

Can 74LCX00SJX operate at 2.0V V_CC?

No - the 74LCX00SJX is specified for 2.3V minimum V_CC under Recommended Operating Conditions. At 2.0V, parameters including propagation delay, output drive, and noise margins are not guaranteed. For 1.8V–2.5V operation, consider the 74ALVC00MTCX or SN74LVC00APWR instead.

Does 74LCX00SJX require pull-up or pull-down resistors on unused inputs?

Yes - per datasheet Note 3, all unused inputs must be held HIGH or LOW; floating inputs are prohibited. Uncontrolled bias can cause excessive ICC, oscillation, or increased EMI. A 10kΩ pull-up to V_CC or pull-down to GND is recommended for each unconnected input pin on the 74LCX00SJX.

Is the 74LCX00SJX pinout compatible with standard 74-series SOIC-14 packages?

Yes - the 74LCX00SJX uses the industry-standard 14-lead SOP (EIAJ TYPE II) pinout, matching 74HC00, 74LS00, and other quad NAND devices in SOIC-14. Pin 1 is index-marked, with inputs on pins 1/2/4/5/8/9/12/13 and outputs on pins 3/6/10/11, identical to JEDEC MS-012 footprints.

What thermal considerations apply to 74LCX00SJX in high-density PCB layouts?

The 74LCX00SJX has no thermal pad or exposed die attach pad (DAP) in its SOP package - unlike DQFN variants. Its θ_JA is ~120°C/W typical. Maintain ≥0.5mm clearance around the package, avoid copper pours under the body, and limit adjacent high-power components to prevent junction temperatures exceeding +85°C ambient rating.

74LCX00SJX Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74LCX

Package/Case:: 14-SOIC (0.209", 5.30mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: NAND 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:: 5.2ns @ 3.3V, 50pF

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SOP

74LCX00SJX FAQ

1.How can I place an order for 74LCX00SJX through Aetrix?

Please submit a Request for Quotation (RFQ) for 74LCX00SJX 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 74LCX00SJX reliable?

The price and inventory of 74LCX00SJX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LCX00SJX is usually 5 days.

3.What payment methods are accepted for 74LCX00SJX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LCX00SJX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74LCX00SJX?

74LCX00SJX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74LCX00SJX 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 74LCX00SJX?

For technical support, including 74LCX00SJX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LCX00SJX requirements.

6.How does Aetrix verify that 74LCX00SJX is sourced from the original manufacturer or authorized distributors?

All 74LCX00SJX 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 74LCX00SJX meets industry standards.

7.What is the process for return or replacement of 74LCX00SJX?

All 74LCX00SJX units undergo pre-shipment inspection (PSI). If there is an issue with 74LCX00SJX, 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 74LCX00SJX part is unused and in its original packaging.

Return procedure for 74LCX00SJX:

1.Submit a request within 90 days.

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

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