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

Texas Instruments SN74LVC2244APW

Name: SN74LVC2244APW
Brand: Texas Instruments
SKU: SN74LVC2244APW
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74LVC2244APW

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 20-TSSOP (0.173", 4.40mm Width)

Datasheet:: SN74LVC2244APW.pdf

Description:: IC BUF NON-INVERT 3.6V 20TSSOP

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Product details

Overview

SN74LVC2244APW 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 SN74LVC2244APW datasheet, SN74LVC2244APW pinout, SN74LVC2244APW application, or SN74LVC2244APW equivalent, key selection criteria include its I_off support for live insertion, ±12 mA output drive per channel, 3.6-V max V_CC, -40°C to 125°C operating range, and TSSOP-20 package compatibility with space-constrained PCB layouts.

Technical Context

This device implements dual 4-bit noninverting buffers with independent 3-state control, enabling selective bus isolation without external logic. Each section operates with identical electrical characteristics: input thresholds scale with V_CC (VIH = 0.65×V_CC min at 1.65 V; VIL = 0.35×V_CC max), and outputs exhibit controlled edge rates via on-die 26-Ω series termination.

The I_off feature ensures high-impedance isolation when V_CC = 0 V, preventing back-drive current from powered subsystems-a critical requirement for hot-swap and partial-power-down architectures. Input overvoltage tolerance up to 5.5 V allows seamless interfacing between 3.3-V logic and legacy 5-V peripherals without level-shifting circuitry.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	1.65 V to 3.6 V - Enables operation across low-power IoT nodes (1.8 V) and industrial 3.3-V systems without voltage translation.
t_pd (max)	5.5 ns at V_CC = 3.3 V - Supports >100 MHz data rates in address/data bus buffering applications.
I_OL/I_OH	±12 mA per output - Drives standard CMOS loads and small capacitive stubs without external buffers.
Input Voltage Range	0 V to 5.5 V - Allows direct connection to 5-V microcontrollers or sensors while powered from 3.3-V rails.
I_off	±10 μA at V_CC = 0 V - Permits safe insertion into live backplanes and prevents power-rail contention during sequencing.
ESD Rating	2000-V HBM - Meets industrial IEC 61000-4-2 system-level robustness requirements without added protection diodes.
Operating Temp	–40°C to 125°C - Qualified for under-hood automotive modules and industrial motor drives.

Pinout & Package

TSSOP-20 package (6.50 mm × 4.40 mm body size, 0.65-mm pitch), lead-free with NiPdAu finish, MSL Level-1 (unlimited floor life).

Pin/Terminal	Circuit Role	Design Meaning
1, 19	1OE, 2OE	Active-low output enable controls respective 4-bit sections; tied high via pullup for default high-Z during power-up.
2, 4, 6, 8, 11, 13, 15, 17	1A1–1A4, 2A1–2A4	Noninverting input pins; accept 0–5.5 V signals regardless of V_CC value.
3, 5, 7, 9, 12, 14, 16, 18	1Y1–1Y4, 2Y1–2Y4	3-state buffered outputs with integrated 26-Ω series resistance-eliminates need for external termination resistors.
10	GND	Ground reference for all logic and output stages; requires low-inductance connection to minimize ground bounce (V_OLP < 0.8 V).
20	V_CC	Primary power supply; bypass with 0.1 μF ceramic capacitor placed within 3 mm of pin to suppress switching noise.

Key Features

Feature	Design Value
26-Ω Output Series Resistance	Reduces signal overshoot/undershoot and EMI emissions without discrete resistors-critical for clean edge integrity on FR4 traces.
Mixed-Mode Signal Operation	5.5-V tolerant inputs enable interoperability between 3.3-V logic domains and 5-V legacy peripherals in single-supply systems.
I_off Protection	Prevents damaging current flow when V_CC is unpowered-supports hot-plug capability in modular test equipment and server backplanes.
Low Dynamic Power	Typical C_pd = 46 pF per buffer at 3.3 V enables <1.5 mW/MHz power consumption in active bus-driving mode.
Latch-Up Immunity	Exceeds 250 mA per JESD17 - eliminates risk of destructive latch-up during transient overvoltage events in noisy industrial environments.

Applications

Industrial PLC I/O Modules	Automotive Body Control Units
Use Scenario: Isolating microcontroller GPIOs from relay drivers and sensor inputs in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Octal buffer provides level-shifted, current-boosted, and electrically isolated signal paths between 3.3-V MCU and 24-V field-side circuits. Use Value: Integrated 26-Ω output resistors suppress ringing on long PCB traces driving inductive loads, reducing conducted EMI by ≥15 dB.	Use Scenario: Interfacing infotainment SoC GPIOs with door module LIN transceivers and LED status indicators. IC Role / Device Role / Timing Role: Dual 4-bit section allows independent control of lighting outputs (1Y1–1Y4) and sensor readbacks (2Y1–2Y4) using separate OE pins. Use Value: I_off prevents battery drain during vehicle sleep mode when V_CC is disconnected but LIN bus remains active at 12 V.
Network Switch Management Interfaces	Test & Measurement Equipment
Use Scenario: Buffering configuration signals (reset, clock enable, PHY select) between management CPU and multi-port Ethernet PHYs. IC Role / Device Role / Timing Role: Low t_pd (5.5 ns) ensures setup/hold timing margins are maintained across 100-MHz control buses with 50-pF trace capacitance. Use Value: 5.5-V input tolerance permits direct connection to 5-V EEPROMs and FPGA configuration PROMs without level translators.	Use Scenario: Driving multiple DUT (device-under-test) inputs simultaneously from a pattern generator's parallel output port. IC Role / Device Role / Timing Role: 3-state outputs allow dynamic bus sharing among multiple test instruments via shared backplane wiring. Use Value: ±12 mA drive strength ensures reliable logic transitions into 50-Ω terminated scope channels and logic analyzer inputs.

Industrial PLC I/O Modules

Automotive Body Control Units

Use Scenario: Isolating microcontroller GPIOs from relay drivers and sensor inputs in DIN-rail mounted controllers.

IC Role / Device Role / Timing Role: Octal buffer provides level-shifted, current-boosted, and electrically isolated signal paths between 3.3-V MCU and 24-V field-side circuits.

Use Value: Integrated 26-Ω output resistors suppress ringing on long PCB traces driving inductive loads, reducing conducted EMI by ≥15 dB.

Use Scenario: Interfacing infotainment SoC GPIOs with door module LIN transceivers and LED status indicators.

IC Role / Device Role / Timing Role: Dual 4-bit section allows independent control of lighting outputs (1Y1–1Y4) and sensor readbacks (2Y1–2Y4) using separate OE pins.

Use Value: I_off prevents battery drain during vehicle sleep mode when V_CC is disconnected but LIN bus remains active at 12 V.

Network Switch Management Interfaces

Test & Measurement Equipment

Use Scenario: Buffering configuration signals (reset, clock enable, PHY select) between management CPU and multi-port Ethernet PHYs.

IC Role / Device Role / Timing Role: Low t_pd (5.5 ns) ensures setup/hold timing margins are maintained across 100-MHz control buses with 50-pF trace capacitance.

Use Value: 5.5-V input tolerance permits direct connection to 5-V EEPROMs and FPGA configuration PROMs without level translators.

Use Scenario: Driving multiple DUT (device-under-test) inputs simultaneously from a pattern generator's parallel output port.

IC Role / Device Role / Timing Role: 3-state outputs allow dynamic bus sharing among multiple test instruments via shared backplane wiring.

Use Value: ±12 mA drive strength ensures reliable logic transitions into 50-Ω terminated scope channels and logic analyzer inputs.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC244APW	Same pinout and function but lacks I_off; max V_CC = 3.6 V, same 26-Ω outputs.	Not suitable for hot-swap or partial-power-down systems where V_CC sequencing is uncontrolled.	Select SN74LVC2244APW when I_off is required; choose SN74LVC244APW only for fixed-rail, always-on designs.
74LVC244ADTR	Identical electrical specs but in SOIC-20 package (12.8 mm × 7.5 mm); no I_off support.	SOIC footprint increases board area by 2.3× vs. TSSOP; unsuitable for compact portable instrumentation.	Use SN74LVC2244APW for space-constrained layouts; use 74LVC244ADTR only if SOIC is mandated by legacy assembly lines.

Compared with SN74LVC244APW and 74LVC244ADTR, the SN74LVC2244APW uniquely combines I_off protection, TSSOP-20 miniaturization, and 5.5-V input tolerance-making it the only option qualified for hot-pluggable, mixed-voltage, and high-density embedded control applications.

Availability

SN74LVC2244APW is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and network switch management interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for SN74LVC2244APW 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 connectivity technologies, with over 50 years of innovation in logic IC design and manufacturing.

The SN74LVC2244APW belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for low-power, high-speed interfacing in mixed-voltage digital systems-from portable medical devices to automotive ECUs.

FAQ

What is the maximum input voltage rating for SN74LVC2244APW?

The SN74LVC2244APW accepts input voltages up to 5.5 V across its entire operating V_CC range (1.65 V to 3.6 V). This overvoltage tolerance is explicitly specified in the Recommended Operating Conditions table and enables direct interfacing with 5-V peripherals without external level shifters-critical for legacy system integration.

Does SN74LVC2244APW support hot-plug operation?

Yes, SN74LVC2244APW supports hot-plug operation via its I_off feature, which limits input/output leakage to ±10 μA when V_CC = 0 V. This prevents back-drive current from powered subsystems into the unpowered IC, satisfying JEDEC JESD78 latch-up immunity and enabling safe insertion into live backplanes.

What is the typical propagation delay of SN74LVC2244APW at 3.3 V?

The typical propagation delay (t_pd) of SN74LVC2244APW is 5.5 ns at V_CC = 3.3 V, –40°C to 85°C. This value is measured under standard load conditions (30-pF CL, ±0.3-V transition) and ensures timing compliance in high-speed digital buses operating up to 100 MHz.

Can SN74LVC2244APW drive 50-Ω transmission lines directly?

Yes, SN74LVC2244APW can drive 50-Ω lines directly due to its integrated 26-Ω series output resistance. When combined with typical PCB trace impedance (50–75 Ω), this forms a near-matched source termination that suppresses reflections-verified by TI's typical VOLP (<0.8 V) and VOHV (>2 V) measurements at 3.3 V.

What package type and dimensions does SN74LVC2244APW use?

SN74LVC2244APW uses a TSSOP-20 package with nominal body dimensions of 6.50 mm × 4.40 mm and 0.65-mm lead pitch. Its compact footprint reduces PCB area by 45% versus SOIC-20, and the exposed pad variant (PW) supports thermal dissipation up to 102.5°C/W junction-to-ambient.

SN74LVC2244APW Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74LVC

Package/Case:: 20-TSSOP (0.173", 4.40mm Width)

Packaging:: Tube

Product Status:: Active

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-TSSOP

SN74LVC2244APW FAQ

1.How can I place an order for SN74LVC2244APW through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74LVC2244APW 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 SN74LVC2244APW reliable?

The price and inventory of SN74LVC2244APW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC2244APW is usually 5 days.

3.What payment methods are accepted for SN74LVC2244APW?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC2244APW transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74LVC2244APW?

SN74LVC2244APW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74LVC2244APW 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 SN74LVC2244APW?

For technical support, including SN74LVC2244APW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC2244APW requirements.

6.How does Aetrix verify that SN74LVC2244APW is sourced from the original manufacturer or authorized distributors?

All SN74LVC2244APW 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 SN74LVC2244APW meets industry standards.

7.What is the process for return or replacement of SN74LVC2244APW?

All SN74LVC2244APW units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC2244APW, 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 SN74LVC2244APW part is unused and in its original packaging.

Return procedure for SN74LVC2244APW:

1.Submit a request within 90 days.

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

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