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NXP Semiconductors 74LVC244ABX,115
- Part No.:
- 74LVC244ABX,115
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-XFQFN Exposed Pad
- Datasheet:
-
74LVC244ABX,115.pdf
- Description:
- IC BUFF NON-INVERT 3.6V 20DHXQFN
- Quantity:
- Payment:
- Shipping:
Inventory:43,052
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Product details
Overview
74LVC244ABX,115 from Nexperia is an octal 3-state buffer/line driver with dual output enables (1OE, 2OE), operating from 1.2 V to 3.6 V supply. It supports mixed-voltage interfacing (3.3 V/5 V inputs), features Schmitt-trigger inputs for noise immunity, and includes IOFF circuitry for partial power-down protection. Used in bus buffering, address/data line driving, and level translation in industrial control and embedded I/O expansion.
For engineers reviewing the 74LVC244ABX,115 datasheet, 74LVC244ABX,115 pinout, 74LVC244ABX,115 application, or 74LVC244ABX,115 equivalent, this device delivers deterministic 3-state timing, overvoltage-tolerant inputs up to 5.5 V, and validated performance across –40 °C to +125 °C - critical for robust digital interface design in automotive body electronics and programmable logic interconnects.
Technical Context
This device implements two independent 4-bit non-inverting buffers, each controlled by a dedicated active-low output enable (1OE for Y0–Y3, 2OE for Y4–Y7). Its CMOS architecture ensures low static current (≤40 μA at VCC = 3.6 V) and fast propagation delays (as low as 1.5 ns at VCC = 3.3 V).
The IOFF circuit disables outputs during power-down to prevent backflow current, while Schmitt-trigger inputs tolerate slow-rising signals and improve noise margin. Bus hold functionality is absent in the 74LVC244A variant (present only in 74LVCH244A), confirming this part relies on external termination or system-level hold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2 V to 3.6 V - enables direct operation from modern low-voltage rails including 1.8 V and 2.5 V logic domains. |
| Input Voltage Tolerance | Up to 5.5 V - allows safe connection to 5 V TTL outputs without level shifters in mixed-supply systems. |
| Propagation Delay (tpd) | 1.5 ns (min) to 7.5 ns (max) at VCC = 3.3 V - supports high-speed data routing in FPGA/CPU peripheral buses. |
| IOFF Leakage Current | ±10 μA max at VCC = 0 V - guarantees isolation during hot-swap or partial power-down sequences. |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive and industrial motor control environments. |
| ESD Protection | HBM >2000 V, CDM >1000 V - meets IEC 61000-4-2 Level 2 requirements for board-level robustness. |
Pinout & Package
DHVQFN20 package (SOT764-1): 2.5 × 4.5 × 0.85 mm, leadless, thermal-enhanced quad flat no-lead with exposed thermal pad (not electrically connected); 20 terminals, 0.5 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Active-low output enable | Independent control of two 4-bit output groups; drives outputs to high-impedance when HIGH. |
| 1A0–1A3, 2A0–2A3 | Data inputs | Eight buffered input channels; accept 1.2 V–5.5 V logic levels with Schmitt-trigger hysteresis. |
| 1Y0–1Y3, 2Y0–2Y3 | 3-state outputs | Octal non-inverting outputs; sink/source up to 24 mA per pin at VCC = 3.3 V. |
| VCC, GND | Power supply | Single-supply operation; requires local 100 nF decoupling near VCC pin due to fast switching. |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply range | 1.2 V to 3.6 V operation enables compatibility with 1.8 V microcontrollers and legacy 3.3 V peripherals. |
| Overvoltage-tolerant inputs | 5.5 V-rated inputs eliminate need for external clamping diodes when interfacing with 5 V systems. |
| IOFF partial power-down | Prevents damaging back-current flow during power sequencing or hot-plug events in modular systems. |
| Low dynamic power | CPD = 12.5 pF at VCC = 3.3 V - reduces switching power in high-frequency bus applications. |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
Use Scenario: Buffering sensor data and actuator command lines between MCU and distributed I/O cards in noisy factory environments. IC Role / Device Role / Timing Role: Bidirectional signal isolator and drive booster; provides 24 mA output drive to overcome long-trace capacitance and EMI coupling. Use Value: Enables reliable 10 MHz bus signaling over 15 cm PCB traces without signal integrity degradation or latch-up risk. | Use Scenario: Interfacing infotainment head-unit GPIOs with door module controllers using mixed 3.3 V and 5 V subsystems. IC Role / Device Role / Timing Role: Level-translating buffer with fail-safe 3-state control during ignition cycling or battery brownout. Use Value: Eliminates external voltage translators and prevents bus contention during MCU reset sequences. |
| FPGA Peripheral Interface | Embedded Test Equipment |
Use Scenario: Driving address/data lines from FPGA I/O banks to external SRAM or flash memory in compact test instrumentation. IC Role / Device Role / Timing Role: High-speed octal buffer with sub-8 ns tpd; synchronizes with FPGA clock domain via OE-controlled gating. Use Value: Supports 125 MHz read/write cycles with deterministic setup/hold margins and zero added jitter. | Use Scenario: Signal conditioning and isolation between ARM-based controller and DUT (device under test) in automated functional testers. IC Role / Device Role / Timing Role: Controlled impedance driver with IOFF protection during DUT power cycling and probe contact verification. Use Value: Prevents false triggering and ground-loop currents during hot insertion of test fixtures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC244APWR | TSSOP20 package (SOT360-1); identical electrical specs but higher thermal resistance (10.0 mW/K derating above 100 °C). | Better suited for prototyping with hand-soldering; lower pin density than DHVQFN but easier rework. | Select when board assembly uses standard reflow profiles and thermal management is less constrained. |
| 74LVC244APW,118 | Same TSSOP20 package as SN74LVC244APWR but manufactured by Nexperia; identical parametric performance and qualification. | No functional difference; differs only in reel packaging and traceability marking. | Choose for supply chain continuity within Nexperia's portfolio and consistent quality documentation. |
Compared with SN74LVC244APWR and 74LVC244APW,118, the 74LVC244ABX,115 offers superior thermal performance (12.9 mW/K derating above 111 °C) and smaller footprint (2.5 × 4.5 mm vs. 4.4 × 6.6 mm), making it optimal for space-constrained, high-reliability industrial modules requiring extended temperature operation.
Availability
74LVC244ABX,115 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, FPGA peripheral interfaces, and embedded test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74LVC244ABX,115 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 focused on essential efficiency technologies, delivering high-performance logic, analog, and discrete components for automotive, industrial, and consumer markets.
The 74LVC series targets low-voltage, high-speed digital interface applications where power efficiency, noise immunity, and mixed-voltage interoperability are critical - especially in next-generation embedded control and connectivity systems.
FAQ
Is 74LVC244ABX,115 pin-compatible with 74LVCH244ABX,115?
No. While both share identical pinouts and package (DHVQFN20), the 74LVCH244A includes bus hold circuitry on all data inputs - a feature absent in the 74LVC244A. This means external pull-ups/downs are required for floating inputs when using the 74LVC244ABX,115, whereas the LVCH variant maintains state autonomously.
What is the maximum output current per pin at 2.5 V supply?
At VCC = 2.5 V, the device guarantees ±12 mA output drive (sink/source) with VOL ≤ 0.6 V and VOH ≥ 1.8 V across –40 °C to +125 °C. This is verified per Table 6 in the datasheet under "IO = –12 mA; VCC = 2.7 V" and linearly interpolated for 2.5 V operation.
Does 74LVC244ABX,115 support hot-swap insertion?
Yes - its IOFF circuitry actively disables outputs when VCC = 0 V, limiting off-state leakage to ±10 μA max. This prevents back-driving powered downstream circuits during live insertion, satisfying IEC 61000-4-2 and JEDEC JESD78 reliability requirements for hot-plug-capable systems.
Can this device translate 5 V logic to 1.8 V logic directly?
No - it accepts 5 V inputs safely (up to 5.5 V), but outputs swing between GND and VCC. To drive a 1.8 V system, VCC must be set to 1.8 V. The output will then be 0 V / 1.8 V, compatible with 1.8 V receivers, while correctly interpreting 5 V inputs due to overvoltage tolerance.
74LVC244ABX,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LVC
- Package/Case:
- 20-XFQFN Exposed Pad
- Packaging:
- Bulk
- 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:
- 24mA, 24mA
- Voltage - Supply:
- 1.2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-DHXQFN (4.5x2.5)
74LVC244ABX,115 FAQ
1.How can I place an order for 74LVC244ABX,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC244ABX,115 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 74LVC244ABX,115 reliable?
The price and inventory of 74LVC244ABX,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC244ABX,115 is usually 5 days.
3.What payment methods are accepted for 74LVC244ABX,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC244ABX,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC244ABX,115?
74LVC244ABX,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC244ABX,115 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 74LVC244ABX,115?
For technical support, including 74LVC244ABX,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC244ABX,115 requirements.
6.How does Aetrix verify that 74LVC244ABX,115 is sourced from the original manufacturer or authorized distributors?
All 74LVC244ABX,115 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 74LVC244ABX,115 meets industry standards.
7.What is the process for return or replacement of 74LVC244ABX,115?
All 74LVC244ABX,115 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC244ABX,115, 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 74LVC244ABX,115 part is unused and in its original packaging.
Return procedure for 74LVC244ABX,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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