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

STMicroelectronics 74LCX00YTTR

Name: 74LCX00YTTR
Brand: STMicroelectronics
SKU: 74LCX00YTTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74LCX00YTTR

Manufacturer:: STMicroelectronics

Category:: Gates and Inverters

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

Datasheet:: 74LCX00YTTR.pdf

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

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Product details

Overview

74LCX00YTTR from STMicroelectronics is a low-voltage CMOS quad dual-input NAND gate in TSSOP-14 package, rated for automotive-grade operation (-40°C to +85°C), with 5 V tolerant inputs, 4.3 ns max propagation delay at 3 V, 24 mA output drive, and 2.0–3.6 V operating voltage. It enables 3.3 V logic interfacing with legacy 5 V systems in engine control units and infotainment interfaces.

For engineers reviewing the 74LCX00YTTR datasheet, 74LCX00YTTR pinout, 74LCX00YTTR application, or 74LCX00YTTR equivalent, key selection criteria include 5 V input tolerance, symmetrical 24 mA I_O drive at 3 V, automotive qualification per AEC-Q100, TSSOP-14 thermal and board-space advantages over SO-14, and direct functional compatibility with 74-series 00 logic.

Technical Context

The device implements four independent NAND gates using sub-micron C2MOS technology, supporting mixed-voltage system interfacing via 5 V tolerant inputs while operating from a 2.0–3.6 V supply. Its balanced t_PLH/t_PHL ensures minimal skew between rising/falling edges across all outputs.

Input and output protection circuits deliver 2 kV HBM ESD immunity, latch-up resistance >500 mA (JESD17), and power-down safe behavior-critical for hot-swap and unpowered-bus scenarios in automotive body electronics and industrial PLC I/O modules.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.0 V to 3.6 V - Enables stable operation across wide 3.3 V rail tolerances and brown-out conditions.
t_PD (max)	4.3 ns at V_CC = 3.0–3.6 V - Matches AC/ACT speed at half the supply voltage, enabling high-speed 3.3 V bus timing.
I_OH/I_OL	±24 mA min at V_CC = 3.0–3.6 V - Drives standard PCI loads and multiple TTL inputs without external buffers.
Input Voltage	0 V to 5.5 V - Allows direct connection to 5 V microcontrollers, sensors, or legacy peripherals without level shifters.
ESD Rating	HBM: 2000 V, MM: 200 V, CDM: 1000 V - Meets automotive ESD robustness requirements for under-hood and dashboard modules.
Operating Temp	-40°C to +85°C - Qualified per AEC-Q100 Grade 3, suitable for engine bay and cabin-mounted ECUs.

Pinout & Package

TSSOP-14 package: 4.9 mm × 6.4 mm × 1.05 mm body height, 0.65 mm pitch, lead-free and RoHS-compliant per ECOPACK® specifications.

Pin/Terminal	Circuit Role	Design Meaning
1, 4, 9, 12	1A–4A Inputs	Active-low NAND inputs; 5 V tolerant, support mixed-voltage signal routing without clamping diodes.
2, 5, 10, 13	1B–4B Inputs	Second input per gate; identical electrical specs to A pins, enabling full quad NAND functionality.
3, 6, 8, 11	1Y–4Y Outputs	Push-pull CMOS outputs with symmetrical ±24 mA drive; no external pull-ups required for active-high logic.
7	GND	Dedicated ground reference for noise isolation; decoupling capacitor placement adjacent improves switching stability.
14	V_CC	Single positive supply input; supports 2.0–3.6 V range; internal regulation not required.

Key Features

Feature	Design Value
5 V tolerant inputs	Enables direct interface with 5 V microcontrollers and sensors without external level translators in mixed-voltage automotive domains.
Symmetrical output drive	Equal \|I_OH\| and I_OL (24 mA min) eliminates timing asymmetry in bidirectional bus control and clock distribution paths.
Power-down protection	Prevents current backflow and latch-up when V_CC is off but inputs remain active-essential for hot-plug I/O expansion cards.
AEC-Q100 qualified	Automotive-grade reliability validated per stress tests including temperature cycling, HTOL, and ESD-certified for under-hood use.

Applications

Engine Control Unit (ECU) Signal Conditioning

Automotive Infotainment I/O Expansion

Use Scenario: Level-shifting and signal inversion between 5 V sensor outputs (e.g., crankshaft position sensor) and 3.3 V MCU GPIOs in real-time engine timing circuits.

IC Role / Device Role / Timing Role: Quad NAND gate performing active-low logic inversion and noise-filtered signal gating with sub-5 ns propagation delay.

Use Value: Eliminates discrete level-shifters and reduces BOM count by 4× per unit; maintains deterministic timing margin for <100 ns critical path budgets.

Use Scenario: Driving LED status indicators and debouncing push-button inputs on head-unit front panels where 5 V backlight drivers coexist with 3.3 V application processors.

IC Role / Device Role / Timing Role: Logic-level translation and input conditioning block with integrated ESD protection on all pins.

Use Value: Replaces two separate ICs (buffer + TVS array); achieves 2 kV HBM immunity without external protection components.

Industrial PLC Digital Input Module

Automotive Body Control Module (BCM)

Use Scenario: Interfacing 24 V field inputs (via resistive divider) to 3.3 V FPGA-based logic controllers in factory automation cabinets.

IC Role / Device Role / Timing Role: Input signal conditioning and NAND-based debounce logic with fail-safe power-down behavior during supply faults.

Use Value: Prevents false triggering during brown-out events; supports hot-swap maintenance without system reset.

Use Scenario: Controlling door lock actuators and mirror position motors via PWM-gated enable signals derived from 3.3 V CAN gateway microcontrollers.

IC Role / Device Role / Timing Role: Gate-level enable logic with 24 mA drive capability sufficient to directly drive small-signal MOSFET gates.

Use Value: Reduces gate driver component count; ensures precise edge alignment between PWM and enable signals due to matched t_PLH/t_PHL.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC00APWR	Same 2.0–3.6 V V_CC, but only 12 mA I_O drive at 3.3 V; 5 V tolerant inputs confirmed.	Lacks AEC-Q100 qualification; rated only for commercial/industrial temp (-40°C to +85°C not guaranteed).	Select when cost sensitivity outweighs automotive qualification and higher drive strength is unnecessary.
74LVX00MTR	Identical pinout and function, but SO-14 package; same 24 mA drive and 5 V tolerance; AEC-Q100 qualified.	Higher thermal resistance and larger PCB footprint than TSSOP-14; less suitable for space-constrained modules.	Select when legacy SO-14 layout reuse or manual soldering is required over automated TSSOP assembly.

Compared with SN74LVC00APWR and 74LVX00MTR, the 74LCX00YTTR uniquely combines AEC-Q100 qualification, TSSOP-14 compactness, and 24 mA drive-making it optimal for new automotive designs requiring both density and robustness.

Availability

74LCX00YTTR is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC digital input modules, and consumer infotainment systems requiring stable component supply with guaranteed long-term lifecycle support.

Supply support for 74LCX00YTTR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, analog ICs, power devices, and logic families for automotive, industrial, and consumer markets.

The 74LCX series targets low-voltage, high-speed 3.3 V logic interoperability with 5 V systems-specifically engineered for automotive and industrial applications demanding mixed-voltage robustness and AEC-Q100 compliance.

FAQ

Is 74LCX00YTTR pin-compatible with standard 74HC00 or 74LS00?

Yes-74LCX00YTTR is pin- and function-compatible with the 74-series 00 family, including 74HC00 and 74LS00, sharing identical TSSOP-14 pinout and truth table. However, its 5 V tolerant inputs and 2.0–3.6 V supply range differ from 74HC00's 2–6 V and 74LS00's 4.75–5.25 V operation, requiring voltage domain verification in mixed designs.

What is the maximum capacitive load this device can drive reliably?

The 74LCX00YTTR is characterized up to 50 pF load capacitance with 500 Ω termination, delivering 4.3 ns max t_PD at 3 V. Driving >50 pF increases propagation delay nonlinearly and may cause ringing; for >100 pF loads, add series termination or buffer stages per ST's application note AN2057.

Does the "Y" suffix guarantee AEC-Q100 qualification?

Yes-the "Y" suffix in 74LCX00YTTR explicitly denotes automotive-grade qualification per AEC-Q100 Rev G, including extended temperature testing (-40°C to +85°C), HTOL, ESD, and latch-up validation. This is documented in Table 1 of ST's Doc ID 4972 Rev 7 and confirmed in ST's official product change notices.

Can this device be used with V_CC = 2.5 V in battery-powered applications?

Yes-74LCX00YTTR operates down to 2.0 V, with verified DC and AC performance at 2.5 V: VIH = 2.0 V, VOL = 0.55 V max at 24 mA, and t_PD ≤ 5.1 ns. This enables reliable use in Li-ion powered portable diagnostic tools and low-power BCM subsystems.

74LCX00YTTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: 74LCX

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

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:: 0.8V

Input Logic Level - High:: 2V

Max Propagation Delay @ V, Max CL:: 4.3ns @ 3.3V, 50pF

Operating Temperature:: -40°C ~ 85°C

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 14-TSSOP

74LCX00YTTR FAQ

1.How can I place an order for 74LCX00YTTR through Aetrix?

Please submit a Request for Quotation (RFQ) for 74LCX00YTTR 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 74LCX00YTTR reliable?

The price and inventory of 74LCX00YTTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LCX00YTTR is usually 5 days.

3.What payment methods are accepted for 74LCX00YTTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LCX00YTTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74LCX00YTTR?

74LCX00YTTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74LCX00YTTR 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 74LCX00YTTR?

For technical support, including 74LCX00YTTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LCX00YTTR requirements.

6.How does Aetrix verify that 74LCX00YTTR is sourced from the original manufacturer or authorized distributors?

All 74LCX00YTTR 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 74LCX00YTTR meets industry standards.

7.What is the process for return or replacement of 74LCX00YTTR?

All 74LCX00YTTR units undergo pre-shipment inspection (PSI). If there is an issue with 74LCX00YTTR, 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 74LCX00YTTR part is unused and in its original packaging.

Return procedure for 74LCX00YTTR:

1.Submit a request within 90 days.

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

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