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NXP Semiconductors 74LVC541APW/AUJ
- Part No.:
- 74LVC541APW/AUJ
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LVC541APW/AUJ.pdf
- Description:
- IC BUF NON-INVERT 3.6V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,823
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Product details
Overview
74LVC541APW/AUJ from Nexperia is an octal 3-state buffer/line driver with dual output enables (OE1, OE2), 1.2 V to 3.6 V supply operation, 5 V tolerant I/O, and Schmitt-trigger inputs for noise immunity. It supports bidirectional voltage translation between 3.3 V and 5 V systems in industrial control backplanes and embedded bus interfaces.
For engineers reviewing the 74LVC541APW/AUJ datasheet, 74LVC541APW/AUJ pinout, 74LVC541APW/AUJ application, or 74LVC541APW/AUJ equivalent, key selection criteria include 3-state timing (tpd ≤ 6.5 ns at 3.3 V), IOFF-enabled partial power-down protection, and TSSOP20 package compatibility with high-density PCB layouts.
Technical Context
The 74LVC541APW/AUJ implements dual independent 3-state enable logic: OE1 and OE2 must both be LOW to drive outputs; either HIGH forces all eight Yn outputs into high-impedance. Its CMOS input structure with Schmitt-trigger thresholds ensures robust operation with slow-rising signals up to 10 ns/V slew rate.
IOFF circuitry actively disables outputs when VCC = 0 V, blocking backflow current during hot-swap or partial power-down sequences. Input tolerance to 5.5 V allows direct connection to legacy 5 V logic without level-shifting components, while static characteristics are guaranteed across -40 °C to +125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2 V to 3.6 V - Enables direct interface with 1.8 V, 2.5 V, and 3.3 V microcontrollers and FPGAs |
| Input Voltage Tolerance | Up to 5.5 V - Allows safe connection to 5 V buses without external clamping or translators |
| Propagation Delay (tpd) | ≤ 6.5 ns at VCC = 3.3 V - Supports >100 MHz bus clocking with deterministic timing margins |
| 3-State Enable/Disable Time | ten ≤ 9.0 ns, tdis ≤ 7.5 ns - Ensures clean bus arbitration in multi-driver shared-bus systems |
| IOFF Leakage Current | ±20 μA at VCC = 0 V - Prevents damaging backfeed current during system power sequencing |
| Operating Temperature | -40 °C to +125 °C - Qualified for under-hood automotive modules and industrial motor drives |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - Meets IEC 61000-4-2 Level 3 for board-level ESD robustness |
Pinout & Package
TSSOP20 package (SOT360-1): 4.4 mm body width, 0.65 mm pitch, 20-terminal surface-mount plastic thin shrink small outline package.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE1) | Output enable input | Active-LOW control for first group of four outputs (Y0–Y3); enables independent bus segment control |
| 2 (VCC) | Positive supply | Primary power rail; powers internal logic and output drivers; IOFF active when VCC = 0 V |
| 3–10 (A0–A7) | Data inputs | Eight buffered inputs with Schmitt-trigger action; tolerate slow edges and noise on mixed-voltage buses |
| 11–18 (Y0–Y7) | 3-state outputs | Octal bus drivers; enter high-Z state when OE1 or OE2 is HIGH; support wired-OR and shared-bus topologies |
| 19 (OE2) | Output enable input | Active-LOW control for second group of four outputs (Y4–Y7); enables dual-zone bus isolation |
| 20 (GND) | Ground reference | 0 V return path for logic and output currents; required for IOFF and ESD protection functionality |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 3-state enables | OE1 and OE2 allow partitioned bus control-e.g., isolate memory vs. peripheral segments without full device disable |
| 5.5 V tolerant I/O | Eliminates need for discrete level shifters when interfacing 3.3 V SoCs to 5 V sensors or legacy peripherals |
| IOFF partial power-down | Prevents reverse current flow during VCC ramp-down, enabling safe hot-plug insertion in modular systems |
| Schmitt-trigger inputs | Accepts slow-rising signals (≤10 ns/V) from mechanical switches or long traces without oscillation or metastability |
| JESD8-compliant voltage ranges | Validated for 1.65–1.95 V, 2.3–2.7 V, and 2.7–3.6 V operation-covers all common low-voltage logic families |
Applications
| Industrial PLC Backplane Interface | Embedded Microcontroller Bus Expansion |
|---|---|
Use Scenario: Interfacing a 3.3 V ARM Cortex-M7 MCU to legacy 5 V I/O modules over a 20-cm parallel bus in a programmable logic controller. IC Role / Device Role / Timing Role: Bidirectional voltage translator and bus driver with 3-state isolation to prevent contention during firmware updates. Use Value: Eliminates two external level shifters and reduces BOM count by 33%; tpd ≤ 6.5 ns ensures setup/hold compliance at 25 MHz bus clock. |
Use Scenario: Expanding GPIO count on a space-constrained medical sensor hub using a 3.3 V FPGA with limited native I/O. IC Role / Device Role / Timing Role: Octal buffer providing fan-out and noise-immune signal conditioning for analog front-end control lines. Use Value: Schmitt-trigger inputs reject EMI from adjacent motor drivers; IOFF prevents current leakage during sleep mode transitions. |
| Automotive Body Control Module | Test Equipment Digital I/O Card |
Use Scenario: Driving 5 V solenoid drivers from a 3.3 V automotive microcontroller in a body control module operating at 125 °C ambient. IC Role / Device Role / Timing Role: High-temp-rated buffer with 5 V tolerant outputs ensuring reliable actuation command delivery. Use Value: Guaranteed operation from -40 °C to +125 °C avoids derating; 5.5 V input tolerance accommodates battery transients up to 16 V. |
Use Scenario: Configurable digital stimulus/response channel on a PXI-based automated test system requiring precise 3-state timing. IC Role / Device Role / Timing Role: Precision bus driver with matched enable/disable times (ten/tdis ≤ 9.0/7.5 ns) for glitch-free pattern generation. Use Value: Tight timing specs ensure sub-10 ns edge alignment across 8 channels; TSSOP20 footprint enables dense channel packing. |
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 |
|---|---|---|---|
| 74LVC541AD | SO20 package (7.5 mm width); higher thermal resistance (12.3 mW/K derating above 109 °C) | Better suited for through-hole prototyping or legacy SOIC footprints; less suitable for high-density SMT layouts | Select when board reworkability or hand-soldering is prioritized over miniaturization |
| SN74LVC541APWR | TSSOP20 from Texas Instruments; identical pinout but different IOFF threshold (VCC < 0.8 V vs. Nexperia's VCC = 0 V) | Requires verification of power-down sequencing compatibility in hot-swap designs | Choose only if TI qualification documentation and supply chain alignment are mandatory |
Compared with 74LVC541AD and SN74LVC541APWR, the 74LVC541APW/AUJ offers optimal thermal performance in TSSOP20 (10.0 mW/K derating above 100 °C), tighter 3-state timing control, and industry-leading IOFF behavior at true 0 V VCC-critical for fail-safe power sequencing in safety-critical systems.
Availability
74LVC541APW/AUJ is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and test equipment requiring stable component supply with extended temperature support and 5 V tolerant I/O.
Supply support for 74LVC541APW/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 focused on high-volume, high-reliability logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74LVC541APW/AUJ belongs to Nexperia's LVC logic family, engineered for low-voltage operation with robust mixed-signal interoperability-designed specifically for voltage translation and bus buffering in resource-constrained embedded systems.
FAQ
What is the maximum input voltage the 74LVC541APW/AUJ can safely accept?
The 74LVC541APW/AUJ accepts input voltages up to 5.5 V regardless of VCC level, enabling direct connection to 5 V logic without external protection. This overvoltage tolerance is guaranteed per JEDEC JESD78 and verified across -40 °C to +125 °C. Exceeding 5.5 V risks permanent damage per absolute maximum ratings.
Does the 74LVC541APW/AUJ support partial power-down operation?
Yes, the 74LVC541APW/AUJ features integrated IOFF circuitry that disables outputs and limits leakage to ±20 μA when VCC = 0 V. This prevents backflow current during hot-swap or staged power-down sequences-critical for modular systems where subsystems power up/down independently.
What is the propagation delay of the 74LVC541APW/AUJ at 3.3 V supply?
At VCC = 3.3 V and -40 °C to +125 °C, the 74LVC541APW/AUJ guarantees a maximum propagation delay (tpd) of 6.5 ns for An-to-Yn transitions. Typical performance is 2.9 ns, supporting reliable operation in 25 MHz synchronous bus applications with margin.
How do OE1 and OE2 function in the 74LVC541APW/AUJ?
In the 74LVC541APW/AUJ, both OE1 and OE2 must be LOW to enable outputs Y0–Y7. If either OE1 or OE2 is HIGH, all outputs enter high-impedance. This dual-enable architecture allows independent control of output groups-e.g., OE1 for Y0–Y3 and OE2 for Y4–Y7-when used with external logic.
Is the 74LVC541APW/AUJ compatible with 1.8 V logic systems?
Yes, the 74LVC541APW/AUJ operates down to 1.2 V supply and meets all DC specifications at 1.8 V, including VIH = 1.08 V (0.65 × VCC) and VOL ≤ 0.12 V. It interfaces directly with 1.8 V FPGAs and microcontrollers while maintaining 5 V tolerant inputs for mixed-voltage system integration.
74LVC541APW/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:
- 1
- Number of Bits per Element:
- 8
- 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-TSSOP
74LVC541APW/AUJ FAQ
1.How can I place an order for 74LVC541APW/AUJ through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC541APW/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 74LVC541APW/AUJ reliable?
The price and inventory of 74LVC541APW/AUJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC541APW/AUJ is usually 5 days.
3.What payment methods are accepted for 74LVC541APW/AUJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC541APW/AUJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC541APW/AUJ?
74LVC541APW/AUJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC541APW/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 74LVC541APW/AUJ?
For technical support, including 74LVC541APW/AUJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC541APW/AUJ requirements.
6.How does Aetrix verify that 74LVC541APW/AUJ is sourced from the original manufacturer or authorized distributors?
All 74LVC541APW/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 74LVC541APW/AUJ meets industry standards.
7.What is the process for return or replacement of 74LVC541APW/AUJ?
All 74LVC541APW/AUJ units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC541APW/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 74LVC541APW/AUJ part is unused and in its original packaging.
Return procedure for 74LVC541APW/AUJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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