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

STMicroelectronics 74LVQ14TTR

Name: 74LVQ14TTR
Brand: STMicroelectronics
SKU: 74LVQ14TTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74LVQ14TTR

Manufacturer:: STMicroelectronics

Category:: Gates and Inverters

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

Datasheet:: 74LVQ14TTR.pdf

Description:: IC INVERTER 6CH 1-INP 14TSSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

74LVQ14TTR from STMicroelectronics is a low-voltage CMOS hex Schmitt inverter with hysteresis (V_H = 650 mV typ. at V_CC = 3.0 V), 6 ns typical propagation delay at 3.3 V, symmetrical output drive (±12 mA min), and 2 V to 3.6 V operating range. It enables robust signal conditioning for slow-rising/noisy digital inputs in 3.3 V bus interfaces.

For engineers reviewing the 74LVQ14TTR datasheet, 74LVQ14TTR pinout, 74LVQ14TTR application, or 74LVQ14TTR equivalent, key selection criteria include input hysteresis voltage, transmission-line driving capability (75 Ω), ESD immunity (2 kV), and TSSOP-14 package compatibility with space-constrained PCB layouts.

Technical Context

The device implements six independent Schmitt-trigger inverters using sub-micron C2MOS technology, with three-stage internal buffering to enhance noise immunity and stabilize output transitions. Each gate features identical input hysteresis and matched t_PLH/t_PHL propagation delays (≤0.5 ns skew).

It meets PCI bus level requirements up to 24 mA sink/source, supports 75 Ω transmission line driving, and guarantees operation across –55°C to +125°C with ±1 µA input leakage and 2 µA quiescent current at V_CC = 3.6 V.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2 V to 3.6 V - Enables direct interface with 2.5 V/3.3 V logic without level shifters
t_PD (typ)	6 ns at V_CC = 3.3 V - Supports >80 MHz signal conditioning in high-speed digital paths
V_H (hysteresis)	650 mV typ. at V_CC = 3.0 V - Rejects noise spikes ≤650 mV on slow-edge signals (e.g., mechanical switch debouncing)
I_OH/I_OL	±12 mA min at V_CC = 3.0 V - Drives 75 Ω transmission lines directly with controlled edge rates
I_CC (max)	20 µA at T_A = –40°C to +85°C - Enables ultra-low-power operation in battery-backed systems
ESD Rating	2 kV HBM - Eliminates need for external TVS protection on I/O lines in industrial environments

Pinout & Package

TSSOP-14 package: 4.4 mm × 5.0 mm body, 0.65 mm pitch, 1.2 mm max height, lead-free and RoHS-compliant.

Pin/Terminal	Circuit Role	Design Meaning
1, 3, 5, 9, 11, 13	Input (1A–6A)	Schmitt-triggered digital inputs accepting slow-rising/falling waveforms; VIH/VIL thresholds vary with hysteresis
2, 4, 6, 8, 10, 12	Output (1Y–6Y)	Inverted, buffered outputs with symmetrical sourcing/sinking capability and low dynamic noise (VOLP = 0.3 V typ.)
7	GND	Reference ground for all I/O and internal circuitry; decoupling capacitor placement critical for noise suppression
14	V_CC	Primary power supply rail; requires local 100 nF ceramic decoupling adjacent to pin for stable high-speed switching

Key Features

Feature	Design Value
Hex Schmitt inverter with hysteresis	650 mV typical input hysteresis enables reliable switching on noisy or slow-transition signals (e.g., rotary encoders, pushbuttons)
75 Ω transmission line drive	Guaranteed ±12 mA output drive allows direct termination of 75 Ω coaxial or PCB traces without external drivers
Balanced propagation delays	t_PLH ≅ t_PHL with ≤0.5 ns skew ensures precise timing alignment across all six channels
Low dynamic noise (VOLP)	0.3 V typical quiet-output noise at V_CC = 3.3 V minimizes crosstalk in dense mixed-signal layouts

Applications

Industrial Sensor Interface

PCI Bus Signal Conditioning

Use Scenario: Debouncing mechanical limit switches and rotary encoders in PLC I/O modules.

IC Role / Device Role / Timing Role: Schmitt inverter converting slow, bounce-prone analog-like switch transitions into clean digital edges.

Use Value: 650 mV hysteresis rejects contact bounce noise; 6 ns delay preserves real-time response in motion control loops.

Use Scenario: Level-shifting and waveform sharpening of legacy PCI bus control signals in embedded controllers.

IC Role / Device Role / Timing Role: Signal conditioner ensuring PCI-compliant voltage levels and edge monotonicity for 24 mA bus loads.

Use Value: ±24 mA drive capability meets PCI specification; symmetrical t_PLH/t_PHL maintains setup/hold timing integrity.

High-Speed Data Line Receiver

Low-Power Clock Buffering

Use Scenario: Receiving slow-rise LVDS or RS-422 differential signals converted to single-ended 3.3 V logic via resistor network.

IC Role / Device Role / Timing Role: Input stage rejecting common-mode noise and reconstructing clean logic levels from degraded waveforms.

Use Value: 75 Ω line-driving capability matches impedance of long trace runs; 2 kV ESD protects against field-induced transients.

Use Scenario: Distributing cleaned clock signals to multiple low-power peripherals in portable medical devices.

IC Role / Device Role / Timing Role: Low-noise clock buffer isolating source from load capacitance while maintaining edge fidelity.

Use Value: 2 µA quiescent current extends battery life; VOLP = 0.3 V prevents clock jitter induced by supply rail coupling.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schmitt inverter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LV14APW	TI part; same TSSOP-14, but hysteresis 500 mV typ. (vs. 650 mV), t_PD = 7.5 ns typ. at 3.3 V	Lower noise margin may require tighter layout control in high-EMI environments	Select when TI ecosystem alignment or dual-sourcing is required; verify hysteresis margin for specific sensor slew rates
74LVC14AD,118	Nexperia part; same pinout, but V_CC range 1.65–5.5 V, hysteresis 800 mV typ., ICC = 40 µA max	Broad V_CC supports mixed-voltage designs but higher quiescent current reduces battery runtime	Prefer for multi-rail systems where 5 V tolerance is needed; avoid in ultra-low-power applications

Compared with SN74LV14APW and 74LVC14AD,118, the 74LVQ14TTR offers superior hysteresis margin and lower static power, making it optimal for noise-prone industrial sensing and battery-sensitive instrumentation-without sacrificing TSSOP-14 footprint compatibility.

Availability

74LVQ14TTR is available at Aetrix Electronics and suitable for industrial sensor interfaces, PCI bus signal conditioning, high-speed data line receivers, and low-power clock buffering requiring stable component supply across extended temperature ranges.

Supply support for 74LVQ14TTR 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, specializing in automotive, industrial, and power management ICs with strong analog and mixed-signal design heritage.

The 74LVQ series targets low-voltage, low-noise 3.3 V digital interfacing-designed specifically for robust signal integrity in harsh industrial and telecom environments where ESD resilience and transmission-line compatibility are critical.

FAQ

What is the maximum operating temperature range for the 74LVQ14TTR?

The 74LVQ14TTR is fully specified from –55°C to +125°C per its Recommended Operating Conditions table. This extended range is validated across all DC and AC parameters including propagation delay, output drive, and hysteresis voltage, making it suitable for under-hood automotive modules and industrial motor drives without derating.

Does the 74LVQ14TTR support 2.5 V logic levels?

Yes-the device operates down to V_CC = 2.0 V, and its input thresholds scale proportionally: V_t+ = 2.2 V and V_t− = 0.5 V at V_CC = 3.0 V, implying ~1.8 V and ~0.4 V respectively at 2.5 V. All DC specs-including 12 mA output drive and 2 µA I_CC-are guaranteed across the full 2 V–3.6 V range.

Can the 74LVQ14TTR drive a 50 Ω transmission line?

No-it is characterized and guaranteed only for 75 Ω transmission line driving per Table 7 (I_OLD/I_OHD test conditions). Driving 50 Ω loads may exceed output current limits (24 mA absolute max) and degrade VOL/VOH margins; use a dedicated 50 Ω line driver or impedance-matching network instead.

Is the 74LVQ14TTR pin-compatible with standard 74HC14 or 74LS14?

It is functionally and physically pin-compatible with 74-series hex Schmitt inverters (e.g., 74LVQ04, 74LV14), but not with bipolar 74LS14 due to different input structure and drive strength. While pinout matches, LS14's TTL input thresholds and 8 mA output drive differ significantly-direct replacement requires validation of noise margin and fan-out in the target system.

74LVQ14TTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: 74LVQ

Package/Case:: 14-TSSOP (0.173", 4.40mm 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):: 2 µA

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

Input Logic Level - Low:: 0.5V

Input Logic Level - High:: 2.2V

Max Propagation Delay @ V, Max CL:: 9ns @ 3.3V, 50pF

Operating Temperature:: -55°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-TSSOP

74LVQ14TTR FAQ

1.How can I place an order for 74LVQ14TTR through Aetrix?

Please submit a Request for Quotation (RFQ) for 74LVQ14TTR 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 74LVQ14TTR reliable?

The price and inventory of 74LVQ14TTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVQ14TTR is usually 5 days.

3.What payment methods are accepted for 74LVQ14TTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVQ14TTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74LVQ14TTR?

74LVQ14TTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74LVQ14TTR 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 74LVQ14TTR?

For technical support, including 74LVQ14TTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVQ14TTR requirements.

6.How does Aetrix verify that 74LVQ14TTR is sourced from the original manufacturer or authorized distributors?

All 74LVQ14TTR 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 74LVQ14TTR meets industry standards.

7.What is the process for return or replacement of 74LVQ14TTR?

All 74LVQ14TTR units undergo pre-shipment inspection (PSI). If there is an issue with 74LVQ14TTR, 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 74LVQ14TTR part is unused and in its original packaging.

Return procedure for 74LVQ14TTR:

1.Submit a request within 90 days.

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

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