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

Texas Instruments SN74LVC2244ANSRG4

Name: SN74LVC2244ANSRG4
Brand: Texas Instruments
SKU: SN74LVC2244ANSRG4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74LVC2244ANSRG4

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 20-SOIC (0.209", 5.30mm Width)

Datasheet:: SN74LVC2244ANSRG4.pdf

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

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Product details

Overview

SN74LVC2244ANSRG4 from Texas Instruments is an octal noninverting buffer/line driver with 3-state outputs, designed for 1.65-V to 3.6-V V_CC operation. It features two independent 4-bit sections (1A–1Y and 2A–2Y), each with dedicated output-enable (1OE/2OE), supports 5.5-V tolerant inputs, delivers ≤5.5 ns propagation delay at 3.3 V, and integrates 26-Ω series output resistors-enabling direct interface with high-speed digital buses in mixed-voltage systems.

For engineers reviewing the SN74LVC2244ANSRG4 datasheet, SN74LVC2244ANSRG4 pinout, SN74LVC2244ANSRG4 application, or SN74LVC2244ANSRG4 equivalent, key selection criteria include its I_off support for live insertion, 3.6-V max V_CC, −40°C to 85°C operating range, 20-pin SOP (NS) package, and compatibility with 3.3-V/5-V level translation in server backplanes and industrial control I/O expansion.

Technical Context

This device implements dual 4-bit noninverting buffers with independent 3-state control per section. Each output drives up to 12 mA sink current and exhibits controlled edge rates via integrated 26-Ω series termination, reducing overshoot/undershoot without external components. The I_off circuitry ensures isolation when V_CC = 0 V, enabling safe partial-power-down operation.

Input voltage tolerance extends to 5.5 V regardless of V_CC (1.65–3.6 V), allowing reliable interfacing between 5-V legacy logic and 3.3-V system domains. Functional modes are strictly defined by OE state: low enables data pass-through (A→Y), high forces high-impedance outputs-no latching or internal feedback is present.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	1.65 V to 3.6 V - Enables operation across low-voltage portable and standard industrial supply rails.
Input Voltage Tolerance	Up to 5.5 V - Allows direct connection to 5-V CMOS/TTL outputs without level-shifting circuitry.
t_pd (max)	5.5 ns at V_CC = 3.3 V - Supports >100 MHz bus timing in high-speed digital interfaces.
Output Drive	±12 mA per output - Sufficient to drive moderate capacitive loads (e.g., PCB traces, multiple gate inputs).
I_off	±10 μA at V_I/V_O = 5.5 V - Prevents damaging back-current during hot-swap or power sequencing events.
ESD Rating	2000-V HBM - Meets JEDEC JESD22-A114A for robust handling in manufacturing and field environments.
Operating Temperature	−40°C to +85°C - Qualified for industrial ambient conditions without derating.

Pinout & Package

SN74LVC2244ANSRG4 is packaged in a 20-pin SOP (NS) with body size 12.80 mm × 7.50 mm, RoHS-compliant NIPDAU lead finish, and moisture sensitivity level (MSL) 1 (unlimited floor life at ≤30°C/60% RH).

Pin/Terminal	Circuit Role	Design Meaning
1, 19	1OE, 2OE	Active-low output enable controls for respective 4-bit sections; must be pulled low to enable A→Y data flow.
2, 4, 6, 8, 11, 13, 15, 17	1A1–1A4, 2A1–2A4	Noninverting input terminals; accept 0–5.5 V signals regardless of V_CC level.
3, 5, 7, 9, 12, 14, 16, 18	1Y1–1Y4, 2Y1–2Y4	3-state buffered outputs with integrated 26-Ω series resistance; drive loads directly without external termination.
10	GND	Ground reference for all logic and power domains; requires low-impedance PCB connection.
20	V_CC	Primary power supply pin; bypass with 0.1 μF capacitor placed adjacent to pin for noise suppression.

Key Features

Feature	Design Value
Integrated 26-Ω Output Resistors	Eliminates need for external series termination, reducing BOM count and PCB area while controlling signal integrity on transmission lines.
I_off Partial-Power-Down Support	Prevents current backflow when V_CC is off, enabling safe insertion/removal in powered-backplane applications like modular PLC I/O cards.
Mixed-Mode Signal Operation	Accepts 5-V inputs while powered from 3.3-V V_CC, simplifying voltage translation in heterogeneous digital subsystems (e.g., FPGA-to-microcontroller bridging).
High-Speed Switching	5.5 ns t_pd at 3.3 V allows use in ≥100 MHz clock domains and fast parallel data paths without added delay budget overhead.
Robust ESD Protection	2000-V HBM rating exceeds JEDEC JESD22-A114A requirements, reducing field failure risk in unshielded industrial enclosures.

Applications

Server Backplane Buffers	Industrial I/O Expansion
Use Scenario: Driving address/data lines between CPU module and hot-pluggable peripheral cards in 1U rack servers. IC Role / Device Role / Timing Role: Noninverting buffer with 3-state control isolates card slots during insertion and provides clean signal integrity across 15-cm backplane traces. Use Value: Integrated 26-Ω resistors suppress reflections without discrete components; I_off prevents bus contention during card hot-swap sequences.	Use Scenario: Interfacing programmable logic controller (PLC) CPU with remote digital input/output modules over extended wiring harnesses. IC Role / Device Role / Timing Role: Level-translating buffer converts 5-V sensor/actuator signals to 3.3-V FPGA-compatible levels while driving distributed capacitive loads. Use Value: 5.5-V input tolerance eliminates external level shifters; ±12 mA drive strength sustains signal integrity over 2-meter cable runs.
Wearable Health Data Acquisition	Network Switch Control Logic
Use Scenario: Isolating low-power microcontroller GPIOs from higher-current sensor interface circuits in compact wearable ECG monitors. IC Role / Device Role / Timing Role: Low-voltage (1.8 V) buffer stage enabling precise timing control of analog front-end sampling clocks and ADC trigger lines. Use Value: 1.65-V minimum V_CC supports battery-powered operation down to 1.7 V; 5.5-V tolerant inputs accommodate legacy sensor modules.	Use Scenario: Managing configuration registers and status reporting between switch ASIC and management MCU in enterprise Ethernet switches. IC Role / Device Role / Timing Role: Bidirectional bus buffer with independent OE control routes register read/write cycles across voltage-domain boundaries (3.3-V ASIC ↔ 5-V MCU). Use Value: Dual-section architecture allows simultaneous control of separate register banks; 5.5-V input tolerance avoids redesign when upgrading MCU voltage rails.

Server Backplane Buffers

Industrial I/O Expansion

Use Scenario: Driving address/data lines between CPU module and hot-pluggable peripheral cards in 1U rack servers.

IC Role / Device Role / Timing Role: Noninverting buffer with 3-state control isolates card slots during insertion and provides clean signal integrity across 15-cm backplane traces.

Use Value: Integrated 26-Ω resistors suppress reflections without discrete components; I_off prevents bus contention during card hot-swap sequences.

Use Scenario: Interfacing programmable logic controller (PLC) CPU with remote digital input/output modules over extended wiring harnesses.

IC Role / Device Role / Timing Role: Level-translating buffer converts 5-V sensor/actuator signals to 3.3-V FPGA-compatible levels while driving distributed capacitive loads.

Use Value: 5.5-V input tolerance eliminates external level shifters; ±12 mA drive strength sustains signal integrity over 2-meter cable runs.

Wearable Health Data Acquisition

Network Switch Control Logic

Use Scenario: Isolating low-power microcontroller GPIOs from higher-current sensor interface circuits in compact wearable ECG monitors.

IC Role / Device Role / Timing Role: Low-voltage (1.8 V) buffer stage enabling precise timing control of analog front-end sampling clocks and ADC trigger lines.

Use Value: 1.65-V minimum V_CC supports battery-powered operation down to 1.7 V; 5.5-V tolerant inputs accommodate legacy sensor modules.

Use Scenario: Managing configuration registers and status reporting between switch ASIC and management MCU in enterprise Ethernet switches.

IC Role / Device Role / Timing Role: Bidirectional bus buffer with independent OE control routes register read/write cycles across voltage-domain boundaries (3.3-V ASIC ↔ 5-V MCU).

Use Value: Dual-section architecture allows simultaneous control of separate register banks; 5.5-V input tolerance avoids redesign when upgrading MCU voltage rails.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC244A	Same functional architecture but lacks I_off specification; maximum V_I = V_CC + 0.5 V instead of 5.5 V.	Not suitable for hot-swap or mixed-voltage systems where inputs may exceed V_CC.	Select SN74LVC2244ANSRG4 when I_off or 5.5-V input tolerance is required for system-level reliability.
74LVC244APW	Identical electrical specs but packaged in TSSOP (PW); 6.50 mm × 4.40 mm footprint vs. NS package's 12.80 mm × 7.50 mm.	Preferred for space-constrained designs where board area is critical and thermal dissipation permits smaller package.	Choose SN74LVC2244ANSRG4 for legacy SOP-compatible layouts or when larger thermal mass improves reliability under sustained load.

Compared with SN74LVC244A, SN74LVC2244ANSRG4 adds I_off and 5.5-V input tolerance for safer mixed-voltage operation; compared with 74LVC244APW, it trades compactness for easier hand-soldering and higher thermal margin in industrial environments.

Availability

SN74LVC2244ANSRG4 is available at Aetrix Electronics and suitable for server backplanes, industrial I/O expansion, wearable health data acquisition, and network switch control logic requiring stable component supply across long production lifecycles.

Supply support for SN74LVC2244ANSRG4 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with decades of expertise in high-reliability industrial and communications ICs.

The SN74LVC2244ANSRG4 belongs to TI's LVC logic family, engineered for low-voltage, high-speed digital interfacing in mixed-signal systems where voltage translation, signal integrity, and power sequencing robustness are critical.

FAQ

What is the maximum input voltage allowed on SN74LVC2244ANSRG4 pins?

The SN74LVC2244ANSRG4 accepts input voltages up to 5.5 V on all A-input pins, independent of V_CC level (1.65–3.6 V). This overvoltage tolerance enables direct interfacing with 5-V logic families without external level shifters, and is explicitly specified in the Recommended Operating Conditions table of the datasheet.

Does SN74LVC2244ANSRG4 support hot-swap or live-insertion applications?

Yes, SN74LVC2244ANSRG4 supports live insertion via its I_off feature, which disables all outputs and limits leakage current to ±10 μA when V_CC = 0 V. This prevents damaging back-current flow during card insertion into powered backplanes-a capability confirmed in the Features and Detailed Description sections of the official datasheet.

What is the propagation delay of SN74LVC2244ANSRG4 at 3.3 V?

The maximum propagation delay (t_pd) of SN74LVC2244ANSRG4 is 5.5 ns at V_CC = 3.3 V, measured under standard load conditions (CL = 50 pF, ΔV = ±0.3 V). This value is guaranteed across the full −40°C to +85°C operating temperature range and appears in the Switching Characteristics tables (Sections 7.6 and 7.7) of the datasheet.

Can SN74LVC2244ANSRG4 drive standard 50-Ω transmission lines directly?

No, SN74LVC2244ANSRG4 cannot drive 50-Ω lines directly-the integrated 26-Ω series resistor is optimized for lower-impedance loads (e.g., PCB traces, gate inputs) and reduces overshoot/undershoot, not for impedance matching to 50 Ω. For true 50-Ω line driving, external series termination or dedicated line drivers are required.

What package type is used for SN74LVC2244ANSRG4?

SN74LVC2244ANSRG4 uses a 20-pin SOP (NS) package with dimensions 12.80 mm × 7.50 mm, RoHS-compliant NIPDAU lead finish, and MSL Level-1 rating (unlimited floor life). This information is confirmed in the Package Option Addendum and Mechanical Information sections of the official Texas Instruments datasheet.

SN74LVC2244ANSRG4 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74LVC

Package/Case:: 20-SOIC (0.209", 5.30mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

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:: 12mA, 12mA

Voltage - Supply:: 1.65V ~ 3.6V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 20-SO

SN74LVC2244ANSRG4 FAQ

1.How can I place an order for SN74LVC2244ANSRG4 through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74LVC2244ANSRG4 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 SN74LVC2244ANSRG4 reliable?

The price and inventory of SN74LVC2244ANSRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC2244ANSRG4 is usually 5 days.

3.What payment methods are accepted for SN74LVC2244ANSRG4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC2244ANSRG4 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74LVC2244ANSRG4?

SN74LVC2244ANSRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74LVC2244ANSRG4 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 SN74LVC2244ANSRG4?

For technical support, including SN74LVC2244ANSRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC2244ANSRG4 requirements.

6.How does Aetrix verify that SN74LVC2244ANSRG4 is sourced from the original manufacturer or authorized distributors?

All SN74LVC2244ANSRG4 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 SN74LVC2244ANSRG4 meets industry standards.

7.What is the process for return or replacement of SN74LVC2244ANSRG4?

All SN74LVC2244ANSRG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC2244ANSRG4, 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 SN74LVC2244ANSRG4 part is unused and in its original packaging.

Return procedure for SN74LVC2244ANSRG4:

1.Submit a request within 90 days.

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

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