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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

STMicroelectronics 74LVQ244MTR

Name: 74LVQ244MTR
Brand: STMicroelectronics
SKU: 74LVQ244MTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74LVQ244MTR

Manufacturer:: STMicroelectronics

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 20-SOIC (0.295", 7.50mm Width)

Datasheet:: 74LVQ244MTR.pdf

Description:: IC BUFFER NON-INVERT 3.6V 20SO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

74LVQ244MTR from STMicroelectronics is a low-voltage CMOS octal bus buffer with non-inverting 3-state outputs, designed for 3.3 V logic systems. It features 5.6 ns typical propagation delay at V_CC = 3.3 V, ±12 mA symmetrical output drive, 2 V to 3.6 V operating range, and 75 Ω transmission line drive capability-used in memory address driving and PCI-bus-compatible data routing.

For engineers reviewing the 74LVQ244MTR datasheet, 74LVQ244MTR pinout, 74LVQ244MTR application, or 74LVQ244MTR equivalent, key selection criteria include 3-state enable timing (t_PZL = 6.8 ns typ), ESD immunity (2 kV HBM), low quiescent current (4 µA max), and guaranteed PCI-level drive at 24 mA.

Technical Context

This device implements dual 4-bit non-inverting buffers, each controlled by independent 3-state enable inputs (1G and 2G). All eight outputs enter high-impedance state when their respective G input is HIGH, enabling bidirectional bus sharing without external logic.

It uses sub-micron C2MOS technology with double-layer metal wiring, delivering balanced t_PLH ≅ t_PHL, low noise (V_OLP = 0.4 V typ), and symmetrical |I_OH| = I_OL = 12 mA min at V_CC = 3.0 V-critical for signal integrity on stubbed or unterminated transmission lines.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Operating Range	2.0 V to 3.6 V - supports mixed-voltage interfacing and 1.2 V data retention during standby
t_PD Propagation Delay	5.6 ns (typ) at V_CC = 3.3 V - enables timing-critical address/data buffering in 100+ MHz bus systems
I_OH/I_OL Drive	±12 mA (min) at V_CC = 3.0 V - ensures clean edge transitions into 75 Ω transmission lines
I_CC Quiescent Current	4 µA (max) at T_A = 25°C - reduces static power in always-on control logic
V_OLP Quiet Output Noise	0.4 V (typ) at V_CC = 3.3 V - minimizes crosstalk in dense PCB layouts
ESD Immunity	2 kV HBM - protects against handling-induced discharge without external clamps
C_IN/C_OUT	4 pF / 8 pF - limits capacitive loading on driving sources and downstream receivers

Pinout & Package

74LVQ244MTR is housed in a 20-pin SOIC (Small Outline Integrated Circuit) package with 1.27 mm pitch, tape-and-reel packaging (MTR suffix), and JEDEC standard SO-20 footprint (body width 7.5 mm, length 12.8 mm).

Pin/Terminal	Circuit Role	Design Meaning
1, 19	Output Enable (1G, 2G)	Active-LOW enables corresponding 4-bit buffer group; HIGH forces outputs to high-impedance
2,4,6,8 / 11,13,15,17	Data Inputs (1A1–1A4, 2A1–2A4)	Non-inverting inputs accepting TTL-compatible logic levels (V_IL = 0.8 V, V_IH = 2.0 V)
3,5,7,9 / 12,14,16,18	Data Outputs (1Y1–1Y4, 2Y1–2Y4)	3-state buffered outputs with symmetrical sourcing/sinking and 75 Ω line drive capability
10	GND	Reference ground for all I/O and internal logic; decoupling required within 10 mm of pin
20	V_CC	Positive supply (2–3.6 V); requires local 100 nF ceramic bypass capacitor

Key Features

Feature	Design Value
Pin- and function-compatible with 74 series 244	Direct drop-in replacement for legacy 5 V designs when operated at 3.3 V with level-shifting
Balanced propagation delays (t_PLH ≅ t_PHL)	Minimizes duty cycle distortion in clocked data paths and avoids setup/hold violations
PCI bus level guarantee at 24 mA	Meets PCI Local Bus Specification 2.2 sink/source requirements without external drivers
Improved latch-up immunity	Withstands transient overvoltage events per JEDEC JESD78 without destructive latch-up
Low-noise quiet output (V_OLP)	Reduces simultaneous switching noise (SSN) in multi-buffered address/data buses

Applications

Memory Address Buffering

PCI Bus Interface

Use Scenario: Driving multiplexed address lines from microcontroller to SRAM or Flash memory arrays.

IC Role / Device Role / Timing Role: Non-inverting 3-state buffer isolating CPU address bus from memory load; enables shared bus arbitration via 1G/2G control.

Use Value: 5.6 ns t_PD and 12 mA drive ensure setup time compliance for 25 ns access memory devices at 3.3 V.

Use Scenario: Interfacing embedded processor local bus to PCI add-in card slot signals.

IC Role / Device Role / Timing Role: Level-translating and driving PCI AD[31:0] lines with guaranteed 24 mA sink/source per pin.

Use Value: Meets PCI v2.2 DC specifications without external pull-ups or driver ICs, reducing BOM count.

Industrial Control Backplane

Test Equipment Signal Routing

Use Scenario: Isolating and distributing I/O address/control signals across modular PLC backplanes.

IC Role / Device Role / Timing Role: Octal buffer with independent enable groups (1G/2G) supporting hot-swap-aware bus partitioning.

Use Value: 2 kV HBM ESD rating and -55°C to +125°C operation ensure reliability in harsh factory environments.

Use Scenario: Reconfigurable signal path selection in automated test equipment (ATE) channel cards.

IC Role / Device Role / Timing Role: Low-skew (≤1.0 ns) 3-state buffer enabling precise timing alignment across parallel DUT channels.

Use Value: t_OSLH/t_OSHL ≤ 1.0 ns ensures deterministic channel switching for <100 ps jitter budgets.

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal 3-state buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC244APWR	Higher drive (24 mA), wider V_CC range (1.65–3.6 V), but no guaranteed PCI 24 mA spec	Preferred for ultra-low-voltage 1.8 V systems; lacks explicit PCI compliance documentation	Select when operating below 2.0 V or requiring higher sink current at 3.3 V
74ALVC244MTCX	Faster t_PD (3.3 ns typ), lower C_IN (3.5 pF), but reduced ESD rating (500 V HBM)	Suitable for high-speed test fixtures where layout-controlled ESD risk is mitigated	Select only in controlled lab environments with strict ESD protocols

Compared with SN74LVC244APWR and 74ALVC244MTCX, the 74LVQ244MTR uniquely guarantees PCI-compliant 24 mA drive and delivers superior noise immunity (V_OLP = 0.4 V) and ESD robustness (2 kV) for industrial backplane use-making it optimal where bus reliability outweighs raw speed.

Availability

74LVQ244MTR is available at Aetrix Electronics and suitable for memory address buffering, PCI bus interface, industrial control backplane, and test equipment signal routing requiring stable component supply across extended temperature and long-lifecycle programs.

Supply support for 74LVQ244MTR 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 vertical manufacturing capabilities.

The 74LVQ series targets low-voltage, low-noise 3.3 V digital interfacing-designed specifically for memory expansion, bus isolation, and legacy-to-modern voltage translation in space-constrained embedded systems.

FAQ

What is the maximum recommended operating temperature for 74LVQ244MTR?

The 74LVQ244MTR is rated for continuous operation from –55°C to +125°C ambient temperature, validated per JEDEC JESD22-A108. This extended range supports deployment in under-hood automotive modules and industrial motor drives where thermal margins exceed commercial-grade alternatives.

Can 74LVQ244MTR be used with 5 V TTL inputs?

Yes-its inputs are TTL-compatible with V_IL ≤ 0.8 V and V_IH ≥ 2.0 V, allowing direct connection to 5 V TTL outputs when V_CC = 3.3 V. However, output voltage swing remains limited to 0–3.3 V, so downstream receivers must accept 3.3 V logic levels.

Is there a lead-free version of this part?

Yes-the 74LVQ244MTR is RoHS-compliant and manufactured with lead-free terminations (matte tin plating) per STMicroelectronics' ECOPACK2 standard, verified in the official device summary document (Doc ID 12722 Rev 7).

How does the 75 Ω transmission line drive capability impact PCB layout?

The 75 Ω output impedance enables direct connection to 75 Ω coaxial or microstrip traces without series termination resistors-reducing component count and board area. Layout best practice is to maintain controlled impedance routing and minimize stub lengths to preserve signal integrity at >50 MHz edge rates.

74LVQ244MTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: 74LVQ

Package/Case:: 20-SOIC (0.295", 7.50mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 2

Number of Bits per Element:: 4

Input Type:: -

Output Type:: 3-State

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

Voltage - Supply:: 2V ~ 3.6V

Operating Temperature:: -55°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 20-SO

74LVQ244MTR FAQ

1.How can I place an order for 74LVQ244MTR through Aetrix?

Please submit a Request for Quotation (RFQ) for 74LVQ244MTR 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 74LVQ244MTR reliable?

The price and inventory of 74LVQ244MTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVQ244MTR is usually 5 days.

3.What payment methods are accepted for 74LVQ244MTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVQ244MTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74LVQ244MTR?

74LVQ244MTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74LVQ244MTR 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 74LVQ244MTR?

For technical support, including 74LVQ244MTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVQ244MTR requirements.

6.How does Aetrix verify that 74LVQ244MTR is sourced from the original manufacturer or authorized distributors?

All 74LVQ244MTR 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 74LVQ244MTR meets industry standards.

7.What is the process for return or replacement of 74LVQ244MTR?

All 74LVQ244MTR units undergo pre-shipment inspection (PSI). If there is an issue with 74LVQ244MTR, 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 74LVQ244MTR part is unused and in its original packaging.

Return procedure for 74LVQ244MTR:

1.Submit a request within 90 days.

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

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