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

onsemi NLV74ACT244DWR2G

Name: NLV74ACT244DWR2G
Brand: onsemi
SKU: NLV74ACT244DWR2G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NLV74ACT244DWR2G

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: NLV74ACT244DWR2G.pdf

Description:: IC BUFF NON-INVERT 5.5V 20SOIC

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Product details

Overview

NLV74ACT244DWR2G from onsemi is an octal non-inverting 3-state buffer/line driver with TTL-compatible inputs, designed for memory address driving, clock distribution, and bidirectional bus interfacing in industrial control and embedded systems. It operates at 4.5 V to 5.5 V, delivers ±24 mA output drive, features 9.0 ns max propagation delay at 5 V, and supports −40°C to +85°C ambient operation.

For engineers reviewing the NLV74ACT244DWR2G datasheet, pinout, applications, or equivalent options, key selection criteria include 3-state bus contention control, TTL-level input compatibility, SOIC-20W package thermal performance (θ_JA = 96°C/W), and guaranteed 24 mA sink/source capability under industrial temperature conditions.

Technical Context

The NLV74ACT244DWR2G implements dual 4-bit non-inverting buffers with independent 3-state enable controls (OE1 on Pin 1, OE2 on Pin 19). Each output transitions to high-impedance when its associated OE is HIGH, enabling bidirectional bus arbitration without external logic.

Its TTL-compatible inputs accept 0.8 V (max) V_IL and 2.0 V (min) V_IH thresholds at 5 V supply, ensuring robust interfacing with legacy 5 V microcontrollers and FPGAs. Propagation delays are specified at 1.5–10.0 ns across temperature and load, with output enable/disable times tightly controlled to minimize bus glitches.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	4.5 V to 5.5 V - Ensures stable operation with standard 5 V rails and tolerance for ripple or droop.
Output Drive	±24 mA - Sufficient to drive 50 Ω transmission lines or fan-out to ≥10 LS-TTL loads.
Propagation Delay	≤10.0 ns at 5 V, CL = 50 pF - Enables reliable timing in ≤100 MHz bus systems.
Input Thresholds	V_IL ≤ 0.8 V, V_IH ≥ 2.0 V - Guarantees interoperability with TTL and 5 V CMOS logic families.
Operating Temperature	−40°C to +85°C - Qualified for industrial-grade embedded and automation applications.
Package Thermal Resistance	θ_JA = 96°C/W (SOIC-20W) - Supports continuous operation at full drive without forced cooling.
ESD Rating	HBM > 2000 V - Provides baseline handling robustness during PCB assembly and field service.

Pinout & Package

NLV74ACT244DWR2G is housed in a 20-lead SOIC Wide Body (SOIC-20W, Case 751D) package with 1.27 mm pitch, 12.8 mm × 7.5 mm footprint, and gull-wing leads. The package is Pb-free and RoHS-compliant.

Pin/Terminal	Circuit Role	Design Meaning
1, 19	Output Enable (OE1, OE2)	Active-LOW enables respective 4-bit buffer group; HIGH forces outputs to high-impedance state.
2, 4, 6, 8, 3, 5, 7, 9	Data Inputs (A1–A4, B1–B4)	Non-inverting inputs for two independent 4-bit channels; TTL-compatible voltage thresholds.
18, 16, 14, 12, 17, 15, 13, 11	Outputs (Y1–Y4, Z1–Z4)	3-state buffered outputs; each sinks or sources up to 24 mA with rail-to-rail swing.
10	GND	Ground reference for all I/O and internal logic; must be low-impedance connection to system ground plane.
20	V_CC	Positive supply rail; decoupling capacitor (0.1 µF ceramic) required within 5 mm of this pin.

Key Features

Feature	Design Value
Dual independent 3-state control	Separate OE1/OE2 pins allow selective activation of two 4-bit groups-critical for multiplexed address/data buses.
TTL-compatible inputs	Guaranteed V_IL ≤ 0.8 V and V_IH ≥ 2.0 V at 5 V supply ensures plug-and-play integration with legacy 5 V logic.
High-output drive strength	±24 mA per output supports direct interface to unterminated traces or multiple downstream loads without buffers.
Low propagation skew	Matched t_PLH/t_PHL (≤1.5 ns variation) maintains signal integrity across all eight outputs in timing-critical paths.
Pb-free SOIC-20W package	RoHS-compliant wide-body SOIC with 96°C/W thermal resistance enables reliable reflow soldering and long-term reliability.

Applications

Industrial PLC Backplane Interface	Legacy Microcontroller Address Bus Driver
Use Scenario: Driving 16-bit address lines between a microcontroller and multiple peripheral ICs on a noisy factory-floor PLC backplane. IC Role / Device Role / Timing Role: Non-inverting 3-state buffer isolating MCU address outputs from shared bus segments; OE signals synchronized to memory access strobes. Use Value: Prevents bus contention during multi-peripheral access cycles while maintaining <10 ns timing margin at 50 MHz effective bus rate.	Use Scenario: Expanding address space of an 8-bit MCU (e.g., 8051 derivative) to access external SRAM and I/O peripherals via multiplexed AD0–AD7 lines. IC Role / Device Role / Timing Role: Octal buffer reconstructing latched address bits with TTL-compatible input thresholds matching MCU output levels. Use Value: Eliminates need for level-shifting circuitry and guarantees setup/hold timing compliance across −40°C to +85°C operating range.
Programmable Logic Clock Distribution	Test Equipment Signal Conditioning
Use Scenario: Distributing a 25 MHz system clock from an FPGA to four synchronous logic analyzers and two boundary-scan controllers. IC Role / Device Role / Timing Role: Low-skew, 3-state-capable clock driver enabling dynamic clock gating per instrument channel. Use Value: Delivers sub-10 ns edge-to-edge skew and supports hot-plug instrumentation via OE-controlled isolation.	Use Scenario: Conditioning digital stimulus signals from a pattern generator before injection into DUTs with varying input impedance and noise immunity requirements. IC Role / Device Role / Timing Role: Buffer providing 24 mA drive and clean 3-state isolation between test source and device-under-test input pins. Use Value: Maintains signal fidelity over 15 cm cables and prevents back-driving damage during DUT power-down sequences.

Industrial PLC Backplane Interface

Legacy Microcontroller Address Bus Driver

Use Scenario: Driving 16-bit address lines between a microcontroller and multiple peripheral ICs on a noisy factory-floor PLC backplane.

IC Role / Device Role / Timing Role: Non-inverting 3-state buffer isolating MCU address outputs from shared bus segments; OE signals synchronized to memory access strobes.

Use Value: Prevents bus contention during multi-peripheral access cycles while maintaining <10 ns timing margin at 50 MHz effective bus rate.

Use Scenario: Expanding address space of an 8-bit MCU (e.g., 8051 derivative) to access external SRAM and I/O peripherals via multiplexed AD0–AD7 lines.

IC Role / Device Role / Timing Role: Octal buffer reconstructing latched address bits with TTL-compatible input thresholds matching MCU output levels.

Use Value: Eliminates need for level-shifting circuitry and guarantees setup/hold timing compliance across −40°C to +85°C operating range.

Programmable Logic Clock Distribution

Test Equipment Signal Conditioning

Use Scenario: Distributing a 25 MHz system clock from an FPGA to four synchronous logic analyzers and two boundary-scan controllers.

IC Role / Device Role / Timing Role: Low-skew, 3-state-capable clock driver enabling dynamic clock gating per instrument channel.

Use Value: Delivers sub-10 ns edge-to-edge skew and supports hot-plug instrumentation via OE-controlled isolation.

Use Scenario: Conditioning digital stimulus signals from a pattern generator before injection into DUTs with varying input impedance and noise immunity requirements.

IC Role / Device Role / Timing Role: Buffer providing 24 mA drive and clean 3-state isolation between test source and device-under-test input pins.

Use Value: Maintains signal fidelity over 15 cm cables and prevents back-driving damage during DUT power-down sequences.

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
SN74ACT244N	Same logic function and DC specs, but PDIP-20 package (θ_JA = 70°C/W); no automotive qualification.	Preferred for prototyping or through-hole PCBs; unsuitable for high-density surface-mount industrial designs.	Select when manual assembly or socket-based validation is required; avoid for volume SMT production.
74LVC244APW	3.3 V only (1.65–3.6 V), lower drive (±24 mA @ 3.3 V), TSSOP-20 package; not TTL-compatible.	Targets modern low-voltage systems; requires level translation when interfacing with 5 V logic.	Choose only for new 3.3 V designs; incompatible with existing 5 V infrastructure without additional circuitry.

Compared with SN74ACT244N and 74LVC244APW, the NLV74ACT244DWR2G uniquely combines industrial temperature rating, SOIC-20W surface-mount compatibility, and native TTL input compatibility-making it the sole option for drop-in replacement in legacy 5 V embedded bus systems requiring AEC-Q100 optional qualification path.

Availability

NLV74ACT244DWR2G is available at Aetrix Electronics and suitable for industrial automation, legacy microcontroller expansion, and programmable logic clock distribution requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for NLV74ACT244DWR2G 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient innovation for automotive, industrial, cloud, medical, and IoT applications.

The NLV74ACT244DWR2G belongs to onsemi's legacy logic family, engineered specifically for robust 5 V system interfacing where reliability, bus contention control, and backward compatibility with TTL are mandatory design requirements.

FAQ

What is the maximum operating supply voltage for NLV74ACT244DWR2G?

The NLV74ACT244DWR2G has an absolute maximum V_CC rating of +6.5 V, but its recommended operating range is strictly 4.5 V to 5.5 V. Operation outside this window may cause undefined logic behavior or accelerated parametric drift. The NLV74ACT244DWR2G is not rated for 3.3 V operation and will not meet AC/DC specifications below 4.5 V.

Does NLV74ACT244DWR2G support hot-swap or live-insertion on a powered bus?

The NLV74ACT244DWR2G supports controlled hot-swap operation when OE pins are held HIGH (3-state) during insertion, preventing bus contention. Its ±50 mA output diode current rating and 2000 V HBM ESD protection provide baseline robustness, but external series resistors or dedicated hot-swap controllers are recommended for repeated live insertion in mission-critical systems. The NLV74ACT244DWR2G itself does not include internal hot-swap circuitry.

Can NLV74ACT244DWR2G drive a 50 Ω transmission line directly?

Yes-the NLV74ACT244DWR2G can drive a 50 Ω transmission line directly when terminated at the far end, as its ±24 mA output drive provides sufficient current for 5 V logic swing into 50 Ω (100 mA peak required for full swing). However, for lengths exceeding 15 cm or data rates above 25 MHz, controlled-impedance layout and series termination near the driver are advised to suppress reflections. The NLV74ACT244DWR2G's 9.0 ns max propagation delay remains valid under this load condition.

Is NLV74ACT244DWR2G pin-compatible with MC74ACT244DWR2G?

Yes-NLV74ACT244DWR2G is the automotive-enhanced variant of MC74ACT244DWR2G, sharing identical pinout, electrical characteristics, and SOIC-20W package dimensions. Both devices use the same ACT244 marking and are functionally interchangeable in industrial applications; the "NLV" prefix denotes extended temperature screening and optional AEC-Q100 qualification capability, but pin-for-pin compatibility is maintained.

What is the typical power dissipation of NLV74ACT244DWR2G at 5 V with all outputs active?

At 5 V supply and 25°C ambient, the NLV74ACT244DWR2G draws ≤8.0 µA quiescent current (ICC) with all inputs static. Under dynamic switching at 10 MHz with 50 pF load per output, total power dissipation is approximately 45 mW, calculated using C_PD = 45 pF and P = C_PD × V_CC² × f. This value scales linearly with frequency and quadratically with supply voltage. The NLV74ACT244DWR2G's low C_PD minimizes dynamic power in high-speed bus applications.

NLV74ACT244DWR2G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74ACT

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:: 4.5V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 20-SOIC

NLV74ACT244DWR2G FAQ

1.How can I place an order for NLV74ACT244DWR2G through Aetrix?

Please submit a Request for Quotation (RFQ) for NLV74ACT244DWR2G 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 NLV74ACT244DWR2G reliable?

The price and inventory of NLV74ACT244DWR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NLV74ACT244DWR2G is usually 5 days.

3.What payment methods are accepted for NLV74ACT244DWR2G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NLV74ACT244DWR2G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NLV74ACT244DWR2G?

NLV74ACT244DWR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NLV74ACT244DWR2G 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 NLV74ACT244DWR2G?

For technical support, including NLV74ACT244DWR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NLV74ACT244DWR2G requirements.

6.How does Aetrix verify that NLV74ACT244DWR2G is sourced from the original manufacturer or authorized distributors?

All NLV74ACT244DWR2G 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 NLV74ACT244DWR2G meets industry standards.

7.What is the process for return or replacement of NLV74ACT244DWR2G?

All NLV74ACT244DWR2G units undergo pre-shipment inspection (PSI). If there is an issue with NLV74ACT244DWR2G, 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 NLV74ACT244DWR2G part is unused and in its original packaging.

Return procedure for NLV74ACT244DWR2G:

1.Submit a request within 90 days.

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

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