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Nexperia USA Inc. 74AHCV541ABQX
- Part No.:
- 74AHCV541ABQX
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
74AHCV541ABQX.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,053
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Product details
Overview
74AHCV541ABQX from Nexperia is an octal 3-state buffer/line driver with Schmitt-trigger inputs, dual output enables (OE1, OE2), and overvoltage-tolerant I/O supporting mixed-voltage translation between 1.8 V and 5.5 V domains. It delivers 3.0 ns typical propagation delay at 5 V, supports partial power-down via IOFF circuitry, and operates across –40 °C to +125 °C for industrial bus interfacing and level-shifting applications.
For engineers reviewing the 74AHCV541ABQX datasheet, 74AHCV541ABQX pinout, 74AHCV541ABQX application, or 74AHCV541ABQX equivalent, key selection criteria include its dual-OE control architecture, Schmitt-trigger noise immunity, IOFF-enabled hot-swap capability, and DHVQFN20 thermal-enhanced package for high-density PCB layouts.
Technical Context
This device implements two independent active-low output enable controls (OE1, OE2) that place corresponding subsets of outputs into high-impedance state-enabling flexible bus partitioning in multi-drop systems. Its Schmitt-trigger inputs provide hysteresis (0.5–1.6 V typical) to reject slow-rising or noisy signals, ensuring clean digital transitions even with RC-filtered or long-trace inputs.
The IOFF circuit actively disables outputs when VCC = 0 V, limiting backflow current to ≤5 μA and enabling safe live insertion/removal in powered-backplane systems. Input voltage tolerance up to 7.0 V allows direct connection to higher-voltage logic without external clamping diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V - Enables interoperability across 1.8 V, 2.5 V, 3.3 V, and 5 V logic families without level shifters. |
| Propagation Delay (tpd) | 3.0 ns typical at VCC = 5 V, CL = 15 pF - Supports >100 MHz data rates in high-speed parallel interfaces. |
| Output Drive Strength | ±16 mA at VCC = 4.5 V - Sufficient to drive 50 pF loads with <8 ns disable time and <9.5 ns enable time. |
| Input Hysteresis (VH) | 0.5–1.6 V depending on VCC - Rejects up to ~1.2 V of input noise without false triggering on slow edges. |
| IOFF Leakage Current | ≤5 μA at VCC = 0 V - Prevents destructive back-current during hot-swap or partial system power-down. |
| Operating Temperature | –40 °C to +125 °C - Qualified for under-hood automotive modules and industrial control cabinets. |
| ESD Protection | HBM >3000 V, CDM >2000 V - Robust handling in automated assembly and field-replaceable module environments. |
Pinout & Package
DHVQFN20 (SOT764-1) package: 2.5 × 4.5 × 0.85 mm body, no leads, thermally enhanced exposed pad (GND-connected recommended), 20 terminals, pin 1 index marked.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE1, OE2 | Active-low output enables - Independently control Y0–Y7 subsets; both LOW enables all outputs. |
| 2–9 | A0–A7 | Data inputs with Schmitt-trigger thresholds - Accept slow or noisy signals; VT+ and VT− defined per VCC. |
| 10 | GND | Ground reference - Exposed thermal pad (terminal 1) must be floating or connected to GND for thermal performance. |
| 11–18 | Y0–Y7 | 3-state buffered outputs - High-impedance when either OE is HIGH; VOL ≤ 0.44 V at 16 mA load. |
| 20 | VCC | Power supply - Supports wide-range operation; IOFF active only when VCC = 0 V. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-voltage translation | Inputs tolerate up to 7.0 V regardless of VCC - Eliminates external clamping for 5 V → 3.3 V or 2.5 V bus bridging. |
| Schmitt-trigger inputs | Hysteresis ≥0.5 V at 5.5 V VCC - Converts slow analog-like edges (e.g., from sensors or long cables) into clean CMOS logic levels. |
| Partial power-down (IOFF) | Output leakage ≤5 μA at VCC = 0 V - Enables hot-plug capability in modular backplanes without system reset. |
| Wide temperature range | Specified from –40 °C to +125 °C - Validated for engine control units, motor drives, and outdoor telecom equipment. |
| Low dynamic power | CPD = 15 pF per buffer - Limits switching power to <1.5 mW per channel at 10 MHz, 5 V (PD = CPD × VCC² × f). |
Applications
| Industrial PLC Backplane Interface | Automotive Body Control Module (BCM) Signal Conditioning |
|---|---|
|
Use Scenario: Isolating and buffering address/data lines between microcontroller and multiple peripheral cards in a modular rack system. IC Role / Device Role / Timing Role: Octal buffer with dual OE control partitions bus segments; Schmitt inputs suppress EMI-induced glitches on 20 cm ribbon-cable runs. Use Value: Enables deterministic timing (tpd ≤ 6 ns) and prevents cross-talk-induced latch-up during card hot-swap via IOFF protection. |
Use Scenario: Level-shifting sensor inputs (5 V analog front-end) to a 3.3 V MCU while rejecting ignition noise in cabin electronics. IC Role / Device Role / Timing Role: Translates voltage domains and cleans slow-rising throttle position signals using Schmitt-trigger hysteresis. Use Value: Eliminates need for external RC filters and discrete clamps; meets ISO 11452-4 pulse immunity requirements without added BOM cost. |
| High-Density FPGA I/O Expansion | Medical Infusion Pump Motor Control Interface |
|
Use Scenario: Driving 8-bit status LEDs and push-button scan lines from FPGA GPIO banks constrained by limited drive strength. IC Role / Device Role / Timing Role: Offloads FPGA I/O loading; 3-state outputs allow shared LED bus with multiplexed control. Use Value: Reduces FPGA pin count and routing congestion; 3.0 ns tpd ensures synchronized visual feedback within 10 ms human response window. |
Use Scenario: Isolating stepper motor driver enable lines from safety-critical MCU outputs in Class II medical devices. IC Role / Device Role / Timing Role: Provides galvanic separation via 3-state isolation; IOFF prevents motor runaway during MCU brownout. Use Value: Meets IEC 62304 SW safety requirement for fail-safe shutdown; eliminates risk of unintended actuation during power transition. |
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 |
|---|---|---|---|
| SN74LVC541APWR | Lower max VCC (3.6 V); no IOFF; 3.7 ns tpd at 3.3 V | Not suitable for hot-swap or mixed 5 V/3.3 V systems requiring backflow prevention | Select when cost sensitivity outweighs IOFF need and full 5.5 V operation is unnecessary. |
| 74AHC541PW | No Schmitt inputs; 1.5 V to 5.5 V VCC; 4.2 ns tpd at 5 V | Lacks noise immunity on slow inputs; requires external filtering in EMI-heavy environments | Choose where input signals are already clean (e.g., short PCB traces) and Schmitt functionality is redundant. |
Compared with SN74LVC541APWR and 74AHC541PW, the 74AHCV541ABQX uniquely combines IOFF-enabled hot-swap safety, Schmitt-trigger noise rejection, and full 5.5 V tolerance-making it the only option qualified for mixed-voltage industrial backplanes requiring zero-risk power sequencing.
Availability
74AHCV541ABQX is available at Aetrix Electronics and suitable for industrial PLC backplane interface, automotive BCM signal conditioning, FPGA I/O expansion, and medical infusion pump motor control applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74AHCV541ABQX 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, with manufacturing rooted in process innovation and automotive-grade quality systems.
The 74AHCV series targets industrial and automotive signal integrity applications, delivering advanced features like IOFF and Schmitt triggers in standard logic footprints to simplify robust system design.
FAQ
Can 74AHCV541ABQX operate with VCC = 2.5 V while interfacing to 5 V inputs?
Yes. Inputs tolerate up to 7.0 V regardless of VCC, allowing direct connection of 5 V signals to the A0–A7 pins when VCC = 2.5 V. The Schmitt-trigger thresholds scale with VCC (e.g., VT+ ≈ 1.35 V at 4.5 V VCC), ensuring reliable recognition of 5 V logic HIGH without external resistors or clamps.
What is the function of the exposed thermal pad (terminal 1) in the DHVQFN20 package?
Terminal 1 is the exposed thermal pad. It has no electrical function but must be either left floating or connected to GND via solder for optimal thermal dissipation. When soldered to GND, it reduces junction-to-board thermal resistance by ~20 °C/W, critical for maintaining <125 °C junction temperature at full 500 mW power dissipation.
How does the IOFF feature behave during power sequencing when VCC ramps from 0 V to 5 V?
IOFF activates only when VCC = 0 V, holding outputs in high-impedance until VCC rises above ~0.8 V. During ramp-up, outputs remain disabled until valid logic levels are established, preventing bus contention. Once powered, standard OE control resumes-no external sequencing circuitry is needed.
Is the 74AHCV541ABQX pin-compatible with the older 74AHCT541BQ?
No. While both use DHVQFN20 packages, pin assignments differ: 74AHCV541ABQ places OE1 at pin 1 and OE2 at pin 19, whereas 74AHCT541BQ assigns OE1 to pin 1 and OE2 to pin 2. Swapping them causes functional failure due to inverted enable logic mapping and incompatible Schmitt vs. standard CMOS input structures.
74AHCV541ABQX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHCV
- Package/Case:
- 20-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Input Type:
- Schmitt Trigger
- Output Type:
- 3-State
- Current - Output High, Low:
- 16mA, 16mA
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-DHVQFN (4.5x2.5)
74AHCV541ABQX FAQ
1.How can I place an order for 74AHCV541ABQX through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCV541ABQX 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 74AHCV541ABQX reliable?
The price and inventory of 74AHCV541ABQX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCV541ABQX is usually 5 days.
3.What payment methods are accepted for 74AHCV541ABQX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCV541ABQX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCV541ABQX?
74AHCV541ABQX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCV541ABQX 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 74AHCV541ABQX?
For technical support, including 74AHCV541ABQX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCV541ABQX requirements.
6.How does Aetrix verify that 74AHCV541ABQX is sourced from the original manufacturer or authorized distributors?
All 74AHCV541ABQX 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 74AHCV541ABQX meets industry standards.
7.What is the process for return or replacement of 74AHCV541ABQX?
All 74AHCV541ABQX units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCV541ABQX, 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 74AHCV541ABQX part is unused and in its original packaging.
Return procedure for 74AHCV541ABQX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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