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NXP Semiconductors 74LVC2244APW/AUJ
- Part No.:
- 74LVC2244APW/AUJ
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LVC2244APW/AUJ.pdf
- Description:
- IC BUF NON-INVERT 3.6V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,147
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Product details
Overview
74LVC2244APW/AUJ from Nexperia is an octal 3-state buffer/line driver with integrated 30 Ω series termination resistors, 5 V tolerant I/O, and dual independent output enables (1OE, 2OE). It operates from 1.2 V to 3.6 V supply, supports mixed-voltage translation between 3.3 V and 5 V systems, and features Schmitt-trigger inputs for noise immunity. It is used in high-speed digital bus interfacing, memory address/data buffering, and industrial control backplanes.
For engineers reviewing the 74LVC2244APW/AUJ datasheet, 74LVC2244APW/AUJ pinout, 74LVC2244APW/AUJ application, or 74LVC2244APW/AUJ equivalent, key selection criteria include its 30 Ω on-die series termination, IOFF partial power-down capability, -40 °C to +125 °C temperature rating, TSSOP20 package footprint, and compatibility with JEDEC JESD8-7A/5A/C standards.
Technical Context
The 74LVC2244APW/AUJ implements two independent 4-bit buffered paths, each controlled by a dedicated active-low output enable (1OE for outputs 1Y0–1Y3; 2OE for 2Y0–2Y3). Its CMOS architecture delivers low static current (≤40 μA at VCC = 3.6 V) and fast propagation delays down to 1.5 ns (VCC = 3.0–3.6 V).
Schmitt-trigger inputs tolerate slow-rising signals and improve noise margin; the IOFF circuit ensures zero backflow current during partial power-down. All I/O pins are overvoltage tolerant to 5.5 V, enabling safe interfacing with legacy 5 V logic while powered from 1.2–3.6 V supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2 V to 3.6 V - Enables operation in ultra-low-voltage microcontroller I/O domains and battery-powered systems. |
| Input Voltage Tolerance | Up to 5.5 V - Allows direct connection to 5 V buses without level-shifting, critical for mixed-voltage board design. |
| Propagation Delay (tpd) | 1.5 ns (min) to 8.0 ns (max) at VCC = 3.0–3.6 V - Supports >100 MHz data rates in high-speed digital interfaces. |
| Integrated Termination | 30 Ω series resistor per output - Reduces signal reflections on PCB traces, eliminating need for external discrete termination. |
| IOFF Leakage Current | ±10 μA max at VCC = 0 V - Prevents damaging back-current when one supply rail is powered down in multi-rail systems. |
| Operating Temperature | -40 °C to +125 °C - Qualified for under-hood automotive modules, industrial PLCs, and harsh-environment embedded controllers. |
| ESD Protection | HBM >2000 V, CDM >1000 V - Ensures robust handling during automated assembly and field operation. |
Pinout & Package
TSSOP20 package (SOT360-1): plastic thin shrink small outline, 20 leads, body width 4.4 mm, 0.65 mm pitch, exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OE | Active-low enable for outputs 1Y0–1Y3; drives all four outputs into high-impedance when HIGH. |
| 2 | 1A0 | Data input for first buffer channel output 1Y0. |
| 3 | 2Y0 | Data output for second buffer channel input 2A0. |
| 4 | 1A1 | Data input for first buffer channel output 1Y1. |
| 5 | 2Y1 | Data output for second buffer channel input 2A1. |
| 6 | 1A2 | Data input for first buffer channel output 1Y2. |
| 7 | 2Y2 | Data output for second buffer channel input 2A2. |
| 8 | 1A3 | Data input for first buffer channel output 1Y3. |
| 9 | 2Y3 | Data output for second buffer channel input 2A3. |
| 10 | GND | Ground reference (0 V) for all internal circuitry and I/O. |
| 11 | 2A3 | Data input for second buffer channel output 2Y3. |
| 12 | 1Y2 | Data output for first buffer channel input 1A2. |
| 13 | 2A2 | Data input for second buffer channel output 2Y2. |
| 14 | 1Y1 | Data output for first buffer channel input 1A1. |
| 15 | 2A1 | Data input for second buffer channel output 2Y1. |
| 16 | 1Y0 | Data output for first buffer channel input 1A0. |
| 17 | 2A0 | Data input for second buffer channel output 2Y0. |
| 18 | 1Y3 | Data output for first buffer channel input 1A3. |
| 19 | 2OE | Active-low enable for outputs 2Y0–2Y3; independent control from 1OE. |
| 20 | VCC | Positive supply voltage (1.2–3.6 V); powers all internal logic and output drivers. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30 Ω series termination | Eliminates need for eight external 30 Ω resistors, reducing BOM count and PCB area in high-density bus designs. |
| 5.5 V tolerant I/O | Enables direct interface with 5 V peripherals while operating from 1.2 V–3.6 V supplies-no external level shifters required. |
| IOFF partial power-down protection | Blocks current flow between powered and unpowered sections of a system, preventing latch-up and damage during hot-swap or sleep modes. |
| Schmitt-trigger inputs | Accepts slow-rising or noisy signals (e.g., from mechanical switches or long cables) without false triggering or metastability. |
| Dual independent 4-bit enables | Allows selective gating of two separate 4-bit data paths-ideal for multiplexed address/data buses or split peripheral interfaces. |
Applications
| Industrial Bus Interface | Memory Subsystem Buffering |
|---|---|
Use Scenario: Isolating and driving parallel control signals across long PCB traces in programmable logic controllers (PLCs) and motor drive boards. IC Role / Device Role / Timing Role: Octal buffer with 30 Ω series termination minimizes signal ringing and overshoot on 20 cm+ traces running at 50–100 MHz. Use Value: Eliminates external termination resistors and reduces timing skew between parallel lines, improving setup/hold margins in synchronous bus protocols. |
Use Scenario: Driving address and data lines between low-voltage microcontrollers (1.8 V/3.3 V) and legacy SRAM or Flash memory chips operating at 5 V. IC Role / Device Role / Timing Role: Level-translating buffer with 5 V tolerant I/O and fast 1.5 ns propagation delay preserves memory access timing budgets. Use Value: Enables direct connection without discrete level shifters, lowering component count and signal path latency in memory-mapped I/O subsystems. |
| Automotive Body Control Module | Test Equipment Signal Conditioning |
Use Scenario: Interfacing 3.3 V CAN controller I/O with 5 V sensor interface circuits in under-dash electronics, operating at ambient temperatures up to 125 °C. IC Role / Device Role / Timing Role: High-temperature-rated octal buffer providing IOFF protection during ECU power sequencing and cold-cranking events. Use Value: Prevents backfeed current from 5 V sensors into unpowered MCU domains, meeting ISO 16750-2 transient immunity requirements. |
Use Scenario: Conditioning digital stimulus and response signals in automated test equipment (ATE), where signal integrity and channel isolation are critical. IC Role / Device Role / Timing Role: 3-state line driver with independent enables allows dynamic routing of multiple DUT signals through shared test fixtures. Use Value: Dual OE control enables time-multiplexed signal injection and capture on shared probe channels, increasing test throughput without hardware reconfiguration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC2244AD | SO20 package (SOT163-1), wider body (7.5 mm), higher thermal resistance (12.3 mW/K derating above 109 °C). | Better suited for manual soldering, prototyping, or legacy SOIC footprints; lower pin density than TSSOP. | Select 74LVC2244AD when board layout requires SOIC-20 compatibility or thermal mass aids rework. |
| SN74LVC8T245RHLR | 8-bit bidirectional transceiver with auto-direction control, no integrated 30 Ω termination, 3.6 V max VCC. | Supports bidirectional data flow (e.g., I²C, SMBus); lacks series termination and IOFF, limiting use in hot-swap or mixed-voltage unidirectional buses. | Choose SN74LVC8T245RHLR only for bidirectional applications where direction control simplifies firmware; not a drop-in replacement for 74LVC2244APW/AUJ. |
Compared with 74LVC2244AD and SN74LVC8T245RHLR, the 74LVC2244APW/AUJ uniquely combines TSSOP20 space efficiency, on-die 30 Ω termination, and IOFF protection-making it optimal for high-density, mixed-voltage, unidirectional bus buffering where signal integrity and power sequencing safety are critical.
Availability
74LVC2244APW/AUJ is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and test equipment requiring stable component supply, extended temperature operation, and reliable mixed-voltage interfacing.
Supply support for 74LVC2244APW/AUJ 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
Nexperia is a global semiconductor expert delivering high-performance logic, analog, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for industrial, automotive, and consumer markets.
The 74LVC2244A family is designed for high-speed, low-power digital interfacing in space-constrained and thermally demanding applications-emphasizing voltage translation, signal integrity, and robustness across wide temperature ranges.
FAQ
What is the maximum input voltage the 74LVC2244APW/AUJ can tolerate?
The 74LVC2244APW/AUJ supports input voltages up to 5.5 V regardless of VCC level, enabling safe interfacing with 5 V logic families while operating from as low as 1.2 V. This overvoltage tolerance is guaranteed per the datasheet's limiting values table and applies to all I/O pins including 1A0–1A3, 2A0–2A3, 1Y0–1Y3, and 2Y0–2Y3. The 74LVC2244APW/AUJ does not require external clamping diodes for 5 V signal compatibility.
Does the 74LVC2244APW/AUJ support partial power-down operation?
Yes, the 74LVC2244APW/AUJ incorporates IOFF circuitry that disables outputs and blocks current flow when VCC = 0 V, even if input or output pins are driven to 5.5 V. Measured IOFF leakage is ≤±10 μA, preventing damaging back-current in multi-rail systems during power sequencing or hot-swap events. This feature is explicitly verified in the datasheet's static characteristics section.
What is the purpose of the integrated 30 Ω resistors in the 74LVC2244APW/AUJ?
The 30 Ω series termination resistors are built into each output driver (1Y0–1Y3, 2Y0–2Y3) to match typical PCB trace impedances and suppress signal reflections. This eliminates the need for eight discrete 30 Ω resistors, reducing BOM cost, PCB real estate, and potential impedance mismatches from layout variations. The value is fixed and non-adjustable per the device architecture.
Can the 74LVC2244APW/AUJ be used as a level shifter between 1.8 V and 5 V systems?
Yes-the 74LVC2244APW/AUJ accepts 1.8 V logic inputs (VIH min = 1.08 V at VCC = 1.2 V; 0.65 × VCC at higher rails) and drives 5 V-tolerant outputs capable of sinking/sourcing up to ±50 mA. Its 5.5 V input tolerance allows direct connection to 5 V buses, making it suitable for unidirectional level shifting without external components, provided the driven load remains within output current limits.
What is the operating temperature range specified for the 74LVC2244APW/AUJ?
The 74LVC2244APW/AUJ is fully specified from -40 °C to +125 °C, validated across all electrical parameters including propagation delay, output drive strength, and IOFF leakage. This extended range is confirmed in the "Ordering information" table and supported by characterization data in Sections 8–10 of the datasheet, qualifying it for under-hood automotive and industrial control applications.
74LVC2244APW/AUJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LVC
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 1.2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74LVC2244APW/AUJ FAQ
1.How can I place an order for 74LVC2244APW/AUJ through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC2244APW/AUJ 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 74LVC2244APW/AUJ reliable?
The price and inventory of 74LVC2244APW/AUJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC2244APW/AUJ is usually 5 days.
3.What payment methods are accepted for 74LVC2244APW/AUJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC2244APW/AUJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC2244APW/AUJ?
74LVC2244APW/AUJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC2244APW/AUJ 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 74LVC2244APW/AUJ?
For technical support, including 74LVC2244APW/AUJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC2244APW/AUJ requirements.
6.How does Aetrix verify that 74LVC2244APW/AUJ is sourced from the original manufacturer or authorized distributors?
All 74LVC2244APW/AUJ 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 74LVC2244APW/AUJ meets industry standards.
7.What is the process for return or replacement of 74LVC2244APW/AUJ?
All 74LVC2244APW/AUJ units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC2244APW/AUJ, 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 74LVC2244APW/AUJ part is unused and in its original packaging.
Return procedure for 74LVC2244APW/AUJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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