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NXP Semiconductors 74AHCT241BQ,115
- Part No.:
- 74AHCT241BQ,115
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
74AHCT241BQ,115.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,126
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Product details
Overview
74AHCT241BQ,115 from Nexperia is an 8-bit 3-state buffer/line driver with TTL-compatible inputs and dual independent output enables (1OE active-LOW, 2OE active-HIGH), operating at 4.5 V to 5.5 V over −40 °C to +125 °C. It supports mixed-voltage translation via overvoltage-tolerant inputs and delivers <7.9 ns propagation delay (VCC = 5 V, CL = 50 pF), enabling use in high-speed bus isolation and address/data buffering in industrial microcontroller systems.
For engineers reviewing the 74AHCT241BQ,115 datasheet, 74AHCT241BQ,115 pinout, 74AHCT241BQ,115 application, or 74AHCT241BQ,115 equivalent, key selection criteria include TTL-level input compatibility, dual 4-bit enable control, DHVQFN20 thermal-enhanced packaging, and guaranteed operation up to +125 °C in automotive and industrial control modules.
Technical Context
The 74AHCT241BQ,115 implements two independent 4-bit buffer sections, each controlled by a dedicated output enable: 1OE (pin 1) disables outputs 1Y0–1Y3 when HIGH; 2OE (pin 19) disables outputs 2Y0–2Y3 when LOW. Its TTL-input threshold (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5 V) ensures reliable interfacing with legacy 5 V logic families.
All inputs feature Schmitt-trigger action for noise immunity and accept voltages up to 7.0 V regardless of VCC, enabling robust level translation between 3.3 V and 5 V domains without external components. The device uses CMOS output stages with ±8 mA drive capability and high-impedance OFF-state leakage ≤±10 μA at 125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74AHCT - TTL-compatible input thresholds, CMOS output drive |
| Supply Voltage | 4.5 V to 5.5 V - Ensures compatibility with standard 5 V systems and margin against rail droop |
| Propagation Delay | ≤7.9 ns (VCC = 5 V, CL = 50 pF) - Supports >100 MHz bus toggle rates in buffered data paths |
| Output Drive | ±8 mA (VOL ≤ 0.55 V at IO = 8 mA) - Sustains signal integrity across 50 Ω transmission lines or 10+ LS-TTL loads |
| Operating Temperature | −40 °C to +125 °C - Qualified for under-hood automotive and industrial motor control environments |
| Input Overvoltage Tolerance | Up to 7.0 V - Allows direct connection to 3.3 V, 5 V, or 7 V sources without clamping diodes |
| ESD Protection | HBM >2000 V, CDM >1000 V - Meets IEC 61000-4-2 Level 3 for board-level robustness |
Pinout & Package
DHVQFN20 package (SOT764-1): 2.5 × 4.5 × 0.85 mm body, 20-terminal no-lead thermal-enhanced quad flat design with exposed die pad (non-functional, not to be connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (1OE) | Output enable - Section 1 | Active-LOW control for outputs 1Y0–1Y3; HIGH forces high-impedance state |
| 2, 4, 6, 8 (1A0–1A3) | Data inputs - Section 1 | Buffer inputs driving corresponding 1Yn outputs; Schmitt-triggered for noise rejection |
| 3, 5, 7, 9 (2Y0–2Y3) | Data outputs - Section 2 | Active-drive or high-Z outputs controlled by 2OE; compatible with 50 Ω PCB traces |
| 11, 13, 15, 17 (2A0–2A3) | Data inputs - Section 2 | Independent 4-bit input set; electrically isolated from Section 1 inputs |
| 12, 14, 16, 18 (1Y0–1Y3) | Data outputs - Section 1 | Outputs disabled when 1OE = HIGH; VOL ≤ 0.55 V at 8 mA load ensures logic LOW margin |
| 10 (GND) | Ground reference | Primary return path for all I/O and supply currents; must be low-inductance connection |
| 20 (VCC) | Power supply | 5 V nominal supply; decoupling capacitor required within 5 mm for stable switching |
| 19 (2OE) | Output enable - Section 2 | Active-HIGH control for outputs 2Y0–2Y3; LOW forces high-impedance state |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 4-bit enables | 1OE (active-LOW) and 2OE (active-HIGH) allow asymmetric bus arbitration and partial system power-down |
| TTL-compatible input thresholds | VIH ≥ 2.0 V, VIL ≤ 0.8 V at 5 V supply - Guarantees interoperability with 74LS, 74F, and microcontroller GPIOs |
| Overvoltage-tolerant inputs | Accepts 0 V to 7.0 V regardless of VCC - Eliminates level shifters when interfacing 3.3 V peripherals to 5 V buses |
| Schmitt-trigger inputs | Hysteresis ≥ 0.5 V - Rejects >100 mV of ground bounce or EMI on control and data lines |
| Thermal-enhanced DHVQFN20 | RθJA = 110 K/W (typical) - Enables sustained 5 V/8 mA operation at +125 °C ambient without derating |
Applications
| Industrial PLC Backplane | Automotive Body Control Module |
|---|---|
Use Scenario: Isolating CPU address/data bus from multiple peripheral cards in a modular rack system. IC Role / Device Role / Timing Role: 8-bit bidirectional buffer with independent section enables prevents bus contention during hot-swap card insertion. Use Value: Dual OE pins allow staggered enable sequencing; 125 °C rating supports operation near power supplies and motor drivers. |
Use Scenario: Interfacing 3.3 V MCU GPIOs to 5 V lamp drivers and sensor inputs in door module electronics. IC Role / Device Role / Timing Role: Level-translating buffer with overvoltage-tolerant inputs accepts 5 V sensor signals while driven by 3.3 V MCU outputs. Use Value: Eliminates discrete level shifters; Schmitt-trigger inputs suppress switch contact bounce in door latch sensing. |
| Test Equipment Signal Routing | Medical Diagnostic Instrument Bus |
Use Scenario: Multiplexing multiple DUT signal lines onto shared test head cabling in automated functional testers. IC Role / Device Role / Timing Role: 3-state buffer provides clean signal isolation between test channels; fast enable/disable minimizes test cycle overhead. Use Value: 7.9 ns max tpd and 12.4 ns max tdis support 100+ MHz digital pattern rates without timing skew. |
Use Scenario: Buffering SPI and parallel status lines between FPGA and analog front-end ASIC in ultrasound beamformer boards. IC Role / Device Role / Timing Role: High-noise-immunity buffer isolates sensitive analog sections from digital switching transients. Use Value: HBM >2000 V ESD rating protects against handling damage during board assembly and field service. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC241APW,118 | Lower VCC range (1.65–3.6 V); CMOS-input thresholds; 3.3 V only | Not suitable for 5 V systems; requires level shifting if interfacing to 5 V peripherals | Select when full system operates at 3.3 V and lowest static power (<1 μA ICC) is critical |
| SN74AHCT241PWR | SOIC-20 package; higher RθJA (~150 K/W); same electrical specs | Limited thermal performance above 85 °C; unsuitable for under-hood or enclosed industrial enclosures | Select when board space allows SOIC and cost is prioritized over thermal density |
Compared with 74AHCT241BQ,115, the 74LVC241APW,118 offers lower voltage operation but lacks 5 V compatibility, while SN74AHCT241PWR matches functionality but cannot sustain +125 °C ambient due to inferior thermal resistance - making 74AHCT241BQ,115 the sole choice for thermally constrained 5 V industrial designs.
Availability
74AHCT241BQ,115 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, automated test equipment signal routing, and medical diagnostic instrument buses requiring stable component supply across extended temperature ranges.
Supply support for 74AHCT241BQ,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 leader in high-performance discrete, logic, and power MOSFET semiconductors, spun off from NXP in 2017 and focused on automotive, industrial, computing, and consumer markets.
The 74AHCT241BQ,115 belongs to Nexperia's AHCT logic family, engineered for robust 5 V TTL-to-CMOS interfacing in harsh environments where reliability, thermal efficiency, and noise immunity are mandatory.
FAQ
What is the maximum clock frequency supported by the 74AHCT241BQ,115 in a data bus application?
The 74AHCT241BQ,115 does not operate on a clock; it is an asynchronous buffer. Its usable data rate is determined by propagation delay (≤7.9 ns at 5 V/50 pF) and enable timing (≤12.4 ns disable time), supporting reliable toggling up to approximately 100 MHz on well-terminated 50 Ω lines. System-level timing must account for trace delays and load capacitance beyond the 50 pF test condition specified for the 74AHCT241BQ,115.
Can the 74AHCT241BQ,115 safely interface a 3.3 V microcontroller to a 5 V display module?
Yes. The 74AHCT241BQ,115 accepts 3.3 V logic levels as valid HIGH inputs (VIH min = 2.0 V at VCC = 5 V) and drives 5 V-compatible outputs. Its overvoltage-tolerant inputs withstand 5 V signals even when VCC = 3.3 V - however, VCC must be 5 V for proper 5 V output swing, so the 74AHCT241BQ,115 must be powered from the 5 V rail when driving the display module.
Is the exposed pad on the DHVQFN20 package of the 74AHCT241BQ,115 electrically functional?
No. The exposed die pad on the 74AHCT241BQ,115's SOT764-1 package is mechanically attached using conductive die attach material but is not connected to any internal circuit node. Nexperia explicitly states it must not be used as a supply pin or input, and recommends leaving it unconnected. Thermal relief via PCB copper pour is permitted, but no electrical connection should be made to this pad.
How does the 74AHCT241BQ,115 differ from the 74AHC241BQ in practical system design?
The 74AHCT241BQ,115 uses TTL-compatible input thresholds (VIH = 2.0 V, VIL = 0.8 V), making it ideal for interfacing with legacy 5 V logic and microcontrollers lacking 3.3 V-tolerant I/O. The 74AHC241BQ uses CMOS thresholds (VIH ≈ 0.7×VCC), requiring stricter supply matching. Both share identical pinout, package, and output specs - so the 74AHCT241BQ,115 is selected when driving from 5 V sources or LS-TTL outputs.
What is the recommended PCB layout practice for minimizing noise coupling into the 74AHCT241BQ,115's enable inputs?
Route 1OE (pin 1) and 2OE (pin 19) as short, direct traces away from high-speed clocks or switching power nodes. Place a 100 nF ceramic decoupling capacitor between VCC (pin 20) and GND (pin 10) within 3 mm of the 74AHCT241BQ,115. Avoid running enable lines parallel to noisy signals; if crossing is unavoidable, orient them orthogonally. These practices ensure Schmitt-trigger inputs reject transient noise that could cause unintended output state changes in the 74AHCT241BQ,115.
74AHCT241BQ,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74AHCT
- Package/Case:
- 20-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 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)
74AHCT241BQ,115 FAQ
1.How can I place an order for 74AHCT241BQ,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT241BQ,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 74AHCT241BQ,115 reliable?
The price and inventory of 74AHCT241BQ,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT241BQ,115 is usually 5 days.
3.What payment methods are accepted for 74AHCT241BQ,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT241BQ,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT241BQ,115?
74AHCT241BQ,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT241BQ,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 74AHCT241BQ,115?
For technical support, including 74AHCT241BQ,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT241BQ,115 requirements.
6.How does Aetrix verify that 74AHCT241BQ,115 is sourced from the original manufacturer or authorized distributors?
All 74AHCT241BQ,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 74AHCT241BQ,115 meets industry standards.
7.What is the process for return or replacement of 74AHCT241BQ,115?
All 74AHCT241BQ,115 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT241BQ,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 74AHCT241BQ,115 part is unused and in its original packaging.
Return procedure for 74AHCT241BQ,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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