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Nexperia USA Inc. 74VHCT541BQ,115
- Part No.:
- 74VHCT541BQ,115
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
74VHCT541BQ,115.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,088
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Product details
Overview
74VHCT541BQ,115 from Nexperia is an octal non-inverting 3-state buffer/line driver in DHVQFN20 package, operating at 4.5–5.5 V supply with TTL-compatible inputs, 3.5 ns typical propagation delay (VCC = 5 V, CL = 15 pF), and ±8 mA output drive. It enables bidirectional bus isolation in industrial control backplanes and microcontroller peripheral expansion interfaces.
For engineers reviewing the 74VHCT541BQ,115 datasheet, 74VHCT541BQ,115 pinout, 74VHCT541BQ,115 application, or 74VHCT541BQ,115 equivalent, key selection criteria include TTL-level input compatibility, 20-terminal thermal-enhanced QFN footprint, dual active-low output enable control (OE0/OE1), and guaranteed operation from –40 °C to +125 °C.
Technical Context
The device implements eight independent non-inverting buffers, each with high-impedance tri-state outputs controlled by two shared active-low enable inputs (OE0 and OE1). Both enables must be LOW for output drivers to pass input signals; either HIGH forces all eight Yn outputs into high-impedance state.
Input structure includes Schmitt-trigger action on all A0–A7 pins, enabling noise immunity and tolerance of slow-rising waveforms. Inputs accept voltages up to 5.5 V regardless of VCC, and VIH/VIL thresholds are fixed at 2.0 V / 0.8 V (TTL-compatible), not ratio-based to VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage (VCC) | 4.5–5.5 V - Ensures compatibility with 5 V TTL logic systems and stable operation across industrial temperature range. |
| Propagation Delay (tpd) | 3.5 ns (typ), 7.0 ns (max) at VCC = 5 V, CL = 15 pF - Supports >100 MHz bus toggle rates in buffered address/data paths. |
| Output Drive (IO) | ±8 mA - Sufficient to drive 50 Ω transmission lines or standard CMOS/TTL fan-out without external buffering. |
| Input Thresholds | VIH = 2.0 V (min), VIL = 0.8 V (max) - Guarantees reliable recognition of legacy TTL logic levels at VCC = 4.5–5.5 V. |
| Operating Temperature | –40 °C to +125 °C - Qualified for under-hood automotive modules, motor drives, and industrial PLC I/O stages. |
| ESD Protection | HBM >2000 V, CDM >1000 V - Reduces risk of field failure during PCB handling and system integration. |
| Power Dissipation (Ptot) | 500 mW (Tamb ≤ 111 °C), derates 12.9 mW/K above - Enables sustained operation in thermally constrained QFN layouts. |
Pinout & Package
DHVQFN20 (SOT764-1) package: 2.5 × 4.5 × 0.85 mm body, 20-terminal no-lead construction with exposed thermal pad (GND-connected recommended), optimized for high-density PCB layouts and improved thermal performance over SO20/TSSOP.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE0) | Output enable input | Active-LOW control for first group of four outputs (Y0–Y3); tied LOW with OE1 enables full octal drive. |
| 2–9 (A0–A7) | Data inputs | Non-inverting buffer inputs; Schmitt-triggered for noise margin and rail-to-rail voltage acceptance up to 5.5 V. |
| 10 (GND) | Ground reference | 0 V return path for all internal circuitry; thermal pad beneath package should be soldered to PCB GND plane. |
| 11–18 (Y0–Y7) | Data outputs | Tri-state buffered outputs; high-impedance when either OE0 or OE1 is HIGH; driven LOW/HIGH only when both enables are LOW. |
| 19 (OE1) | Output enable input | Active-LOW control for second group of four outputs (Y4–Y7); dual-enable architecture supports partial bus gating. |
| 20 (VCC) | Supply voltage | +4.5 V to +5.5 V power rail; decoupling capacitor (100 nF) required within 3 mm of this pin for stable switching. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible input thresholds | VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V - Eliminates need for level-shifting when interfacing with legacy 5 V microcontrollers or FPGAs. |
| Dual independent output enables | OE0 controls Y0–Y3; OE1 controls Y4–Y7 - Enables selective activation of data lanes in multiplexed memory or peripheral buses. |
| Thermally enhanced DHVQFN20 | RθJA = 111 °C/W (typ), 2.5 × 4.5 mm footprint - Delivers 2× lower junction-to-ambient rise vs. SO20 under identical 500 mW load. |
| Schmitt-trigger inputs | Hysteresis ≥ 0.3 V at VCC = 5 V - Rejects <100 ns noise spikes on long traces or unshielded cables in industrial environments. |
| Wide temperature qualification | –40 °C to +125 °C operation - Validated for use in engine control units, servo drives, and outdoor telecom infrastructure. |
Applications
| Industrial PLC Backplane Buffering | Microcontroller Peripheral Expansion |
|---|---|
|
Use Scenario: Isolating 8-bit parallel data between a main CPU board and modular I/O cards in a DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Non-inverting buffer with dual OE control acts as directionless bus driver, enabling read/write arbitration between master and slave modules. Use Value: Prevents bus contention during hot-swap events; 3.5 ns tpd ensures timing closure in 20 MHz parallel bus designs. |
Use Scenario: Extending GPIO count of an ARM Cortex-M4 MCU to drive multiple 7-segment displays and keypad scan lines. IC Role / Device Role / Timing Role: Octal line driver translates low-drive MCU pins to robust 8 mA outputs capable of sinking LED current directly. Use Value: Eliminates need for discrete transistor arrays; Schmitt-trigger inputs tolerate noisy keypad bounce without software debouncing. |
| Automotive Body Control Module | Test Equipment Signal Conditioning |
|
Use Scenario: Level-shifting and buffering sensor status bits (e.g., door open/closed, seatbelt latch) from 3.3 V domain to 5 V CAN transceiver interface logic. IC Role / Device Role / Timing Role: TTL-input buffer accepts 3.3 V logic highs as valid VIH (2.0 V min), providing seamless voltage-domain bridging. Use Value: Avoids dedicated level translators; –40 °C to +125 °C rating matches BCM under-hood thermal requirements. |
Use Scenario: Driving calibrated reference signals from a DAC to multiple test points on a production ATE fixture while maintaining signal integrity. IC Role / Device Role / Timing Role: Low-capacitance (CI = 3 pF typ) buffer isolates DAC output from variable fixture loading, minimizing settling time degradation. Use Value: 4.0 pF CO and 3.5 ns tpd preserve <1% gain error and <50 ps jitter in 10 MHz test waveforms. |
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 | 3.3 V only (1.65–3.6 V), LVCMOS inputs, 5.3 ns tpd (VCC = 3.3 V) | Requires level translation for 5 V systems; unsuitable for direct replacement in 5 V bus environments | Select only if entire system operates at 3.3 V and thermal budget allows TSSOP20's higher RθJA |
| 74ACT541SCX | 5 V only, bipolar TTL process, 6.5 ns tpd, higher ICC (24 mA max) | Higher power draw and EMI; lacks Schmitt-trigger inputs and extended temperature support | Use only where legacy ACT logic family compatibility is mandatory and thermal derating is acceptable |
Compared with SN74LVC541APWR and 74ACT541SCX, the 74VHCT541BQ,115 uniquely combines TTL-level input compatibility, –40 °C to +125 °C operation, and DHVQFN20 thermal efficiency-making it optimal for space-constrained, high-reliability 5 V industrial and automotive bus interfaces.
Availability
74VHCT541BQ,115 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, microcontroller peripheral expansion, and automated test equipment requiring stable component supply across extended temperature ranges.
Supply support for 74VHCT541BQ,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 high-volume, high-reliability logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74VHCT series targets robust 5 V digital interfacing, delivering TTL-compatible input thresholds with CMOS power efficiency and extended temperature resilience for mission-critical control systems.
FAQ
What is the function of the dual output enable inputs (OE0 and OE1)?
OE0 and OE1 are independent active-LOW enables controlling separate groups of outputs: OE0 gates Y0–Y3, OE1 gates Y4–Y7. Both must be LOW for full octal drive; asserting either HIGH places its respective four outputs in high-impedance state. This enables partial bus isolation without requiring additional logic.
Can 74VHCT541BQ,115 operate with a 3.3 V supply?
No. The 74VHCT541BQ,115 is specified only for VCC = 4.5–5.5 V per Table 5. At 3.3 V, VIH (2.0 V min) remains satisfied, but VOH drops below TTL-compliant levels and propagation delay increases beyond specification-operation outside recommended conditions voids parametric guarantees.
Is the exposed thermal pad on the DHVQFN20 package electrically connected?
Yes. The exposed pad (terminal 1 index area, Fig. 4) is internally connected to GND. Nexperia recommends soldering it to a PCB GND plane with ≥4 thermal vias (0.3 mm diameter) to achieve rated thermal performance and ensure mechanical reliability during thermal cycling.
How does the Schmitt-trigger input improve noise immunity?
Schmitt-trigger inputs provide hysteresis (~0.3 V at VCC = 5 V), meaning VIH and VIL thresholds differ. This prevents multiple output transitions when input signals cross the threshold slowly or contain noise, ensuring clean, single-edge responses on long traces or in electrically noisy industrial environments.
74VHCT541BQ,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74VHCT
- 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:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-DHVQFN (4.5x2.5)
74VHCT541BQ,115 FAQ
1.How can I place an order for 74VHCT541BQ,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74VHCT541BQ,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 74VHCT541BQ,115 reliable?
The price and inventory of 74VHCT541BQ,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VHCT541BQ,115 is usually 5 days.
3.What payment methods are accepted for 74VHCT541BQ,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VHCT541BQ,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74VHCT541BQ,115?
74VHCT541BQ,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74VHCT541BQ,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 74VHCT541BQ,115?
For technical support, including 74VHCT541BQ,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VHCT541BQ,115 requirements.
6.How does Aetrix verify that 74VHCT541BQ,115 is sourced from the original manufacturer or authorized distributors?
All 74VHCT541BQ,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 74VHCT541BQ,115 meets industry standards.
7.What is the process for return or replacement of 74VHCT541BQ,115?
All 74VHCT541BQ,115 units undergo pre-shipment inspection (PSI). If there is an issue with 74VHCT541BQ,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 74VHCT541BQ,115 part is unused and in its original packaging.
Return procedure for 74VHCT541BQ,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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