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NXP Semiconductors 74AHCT541PW/AUJ
- Part No.:
- 74AHCT541PW/AUJ
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74AHCT541PW/AUJ.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,057
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Product details
Overview
74AHCT541PW/AUJ from Nexperia is an octal 3-state buffer/line driver with dual active-low output enables (OE0, OE1), TTL-compatible input thresholds, and operation across 4.5 V to 5.5 V supply. It delivers 8-bit unidirectional signal buffering in mixed-voltage digital interfaces, supporting bus isolation and load driving in industrial control backplanes and microcontroller peripheral expansion.
For engineers reviewing the 74AHCT541PW/AUJ datasheet, 74AHCT541PW/AUJ pinout, 74AHCT541PW/AUJ application, or 74AHCT541PW/AUJ equivalent, key selection criteria include TTL-level input compatibility, 3-state output control timing (enable/disable <12.5 ns at 5 V), overvoltage-tolerant inputs up to 5.5 V, and TSSOP20 packaging for high-density PCB layouts.
Technical Context
This device implements a non-inverting 8-bit buffer architecture with two independent active-low output enable inputs controlling separate groups of outputs. Each output transitions to high-impedance when its associated OE is HIGH, enabling bidirectional bus management without external logic.
Input stages feature Schmitt-trigger action for noise immunity, while output drivers are CMOS-based with rail-to-rail swing and ±8 mA drive capability at VCC = 4.5 V. The design supports hot-swap capable interfaces due to overvoltage-tolerant inputs and latch-up immunity exceeding 100 mA per JESD78 Class II Level A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures compatibility with standard 5 V TTL and mixed 3.3 V/5 V systems via overvoltage-tolerant inputs. |
| Input Thresholds | VIL ≤ 0.8 V, VIH ≥ 2.0 V at VCC = 4.5–5.5 V - Guarantees reliable recognition of legacy TTL logic levels. |
| Propagation Delay | 3.5 ns (typ) to 7.0 ns (max) at VCC = 5 V, CL = 15 pF - Enables high-speed data routing in sub-10 ns timing-critical paths. |
| Output Drive | ±8 mA at VCC = 4.5 V - Sufficient to drive 50 Ω transmission lines or multiple CMOS/TTL loads without external buffers. |
| Operating Temperature | −40 °C to +125 °C - Validated for under-hood automotive modules and industrial motor drives requiring extended thermal range. |
| ESD Robustness | HBM >2000 V, CDM >1000 V - Reduces field failure risk in manual handling and board-level assembly environments. |
Pinout & Package
TSSOP20 package (SOT360-1): plastic thin shrink small outline, 20 leads, body width 4.4 mm, 0.65 mm pitch, 1.1 mm max height - optimized for automated placement and thermal performance in space-constrained designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE0, OE1 | Active-low output enable inputs - independently disable Y0–Y7 outputs; both must be LOW for full output activation. |
| 2, 20 | VCC, GND | Power supply and reference ground - decoupling capacitor required within 5 mm of VCC pin for stable switching. |
| 3–10 | A0–A7 | Buffer input terminals - Schmitt-triggered for noise rejection; tolerate up to 5.5 V regardless of VCC. |
| 11–18 | Y0–Y7 | 3-state buffered outputs - present inverted or non-inverted logic (non-inverting per datasheet); high-impedance when OE is HIGH. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | VIH ≥ 2.0 V and VIL ≤ 0.8 V at 5 V supply - eliminates level-shifter requirement when interfacing with legacy 74LS or microcontroller GPIOs. |
| Dual independent output enables | OE0 and OE1 control overlapping or partitioned output subsets - supports flexible bus arbitration and partial system power-down. |
| Overvoltage-tolerant inputs | Withstand 5.5 V input signals even at VCC = 4.5 V - enables safe connection to higher-voltage subsystems without clamping diodes. |
| High noise immunity | Schmitt-trigger inputs with hysteresis >0.5 V - suppresses false triggering from EMI or slow-rising clock/data edges in noisy industrial environments. |
| Extended temperature range | Specified from −40 °C to +125 °C - qualified for use in engine control units, power inverters, and outdoor telecom infrastructure. |
Applications
| Industrial PLC Backplane | Microcontroller I/O Expansion |
|---|---|
Use Scenario: Isolating CPU address/data buses from modular I/O cards in programmable logic controllers. IC Role / Device Role / Timing Role: Unidirectional 8-bit buffer with 3-state outputs controlled by FPGA-generated OE signals to prevent bus contention during card hot-swap. Use Value: Dual OE inputs allow independent gating of upper/lower byte lanes; propagation delay <7 ns ensures timing closure in 20 MHz bus cycles. |
Use Scenario: Expanding GPIO count on ARM Cortex-M4 MCU for sensor array readout and actuator control in edge gateway devices. IC Role / Device Role / Timing Role: Level-translating buffer between 3.3 V MCU pins and 5 V analog front-end ICs or relay drivers. Use Value: Overvoltage-tolerant inputs accept 5 V sensor signals directly; TTL thresholds match legacy peripheral logic without pull-up resistors. |
| Automotive Body Control Module | Test Equipment Signal Conditioning |
Use Scenario: Driving multiple LED indicators and solenoid coils from a single microcontroller port in vehicle door modules. IC Role / Device Role / Timing Role: High-current line driver providing ±8 mA per output to sink/source indicator LEDs and interface with discrete power switches. Use Value: −40 °C to +125 °C rating matches under-dash thermal requirements; latch-up immunity >100 mA prevents failure during load dump transients. |
Use Scenario: Buffering and isolating DUT signals in automated test fixtures to protect ATE instrumentation from ESD and back-drive currents. IC Role / Device Role / Timing Role: 3-state gate between tester channel and device-under-test, enabled only during measurement windows. Use Value: HBM >2000 V and CDM >1000 V ESD ratings reduce fixture calibration drift; fast disable time (<12.5 ns) minimizes signal corruption during state transitions. |
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 |
|---|---|---|---|
| 74AHCT541PW,118 | Same die, identical electrical specs, identical TSSOP20 package - differs only in reel quantity and date code marking. | No functional or layout impact; suitable for drop-in replacement where packaging logistics differ. | Select when standard reel size (2500 pcs) or specific traceability requirements apply. |
| SN74AHCT541PWR | TI part with same pinout and function but wider VCC range (4.5–5.5 V vs. TI's 4.5–5.5 V), slightly higher ICC (max 80 μA vs. Nexperia's 40 μA at 25 °C). | Valid for same bus isolation roles but requires verification of leakage-sensitive low-power sleep modes. | Prefer for designs already using TI ecosystem; confirm quiescent current budget allows 2× higher ICC in standby. |
Compared with 74AHCT541PW/AUJ, the 74AHCT541PW,118 offers identical performance with alternate packaging logistics, while SN74AHCT541PWR provides cross-supplier redundancy at the cost of marginally higher static current - both require no PCB changes but differ in supply chain and qualification history.
Availability
74AHCT541PW/AUJ is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, microcontroller I/O expansion, and test equipment signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for 74AHCT541PW/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 leading semiconductor manufacturer specializing in high-performance logic, analog, and discrete components, with global R&D and manufacturing facilities focused on reliability and energy efficiency.
The 74AHCT541PW/AUJ belongs to Nexperia's AHCT logic family, engineered for TTL-compatible interfacing in industrial, automotive, and computing applications where robustness, speed, and wide operating margins are critical.
FAQ
What is the maximum supply voltage for the 74AHCT541PW/AUJ?
The absolute maximum supply voltage for the 74AHCT541PW/AUJ is +7.0 V, but the recommended operating range is strictly 4.5 V to 5.5 V per datasheet Section 8. Operation above 5.5 V risks violating DC specifications and may compromise long-term reliability, even if within absolute maximum ratings.
Does the 74AHCT541PW/AUJ support 3.3 V logic inputs?
Yes - the 74AHCT541PW/AUJ features overvoltage-tolerant inputs rated to 5.5 V, allowing direct connection of 3.3 V logic signals without level shifters. However, its input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) are TTL-defined, so 3.3 V CMOS outputs (VOH ≈ 3.3 V) fully satisfy VIH and ensure robust HIGH detection.
How do OE0 and OE1 interact in the 74AHCT541PW/AUJ?
In the 74AHCT541PW/AUJ, both OE0 and OE1 are active-low enables. All eight outputs (Y0–Y7) enter high-impedance state if either OE0 or OE1 is HIGH. Outputs are driven only when both OE0 and OE1 are LOW - this OR logic enables fail-safe bus isolation if either control signal fails high.
Is the 74AHCT541PW/AUJ qualified for automotive applications?
The 74AHCT541PW/AUJ is specified from −40 °C to +125 °C and meets JESD78 latch-up and JEDEC ESD standards, but Nexperia does not classify it as AEC-Q100 automotive-qualified. For automotive use, formal qualification testing per AEC-Q100 must be performed by the end customer; the device is commonly deployed in body electronics where full qualification is not mandated.
What is the typical propagation delay of the 74AHCT541PW/AUJ at 5 V?
At VCC = 5.0 V and CL = 15 pF, the typical propagation delay (tpd) of the 74AHCT541PW/AUJ is 3.5 ns, with a maximum of 7.0 ns across −40 °C to +125 °C. This value applies to the An-to-Yn path and is measured under defined test conditions per Figure 3 and Table 7 of the Nexperia datasheet.
74AHCT541PW/AUJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74AHCT
- 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:
- 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-TSSOP
74AHCT541PW/AUJ FAQ
1.How can I place an order for 74AHCT541PW/AUJ through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT541PW/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 74AHCT541PW/AUJ reliable?
The price and inventory of 74AHCT541PW/AUJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT541PW/AUJ is usually 5 days.
3.What payment methods are accepted for 74AHCT541PW/AUJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT541PW/AUJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT541PW/AUJ?
74AHCT541PW/AUJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT541PW/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 74AHCT541PW/AUJ?
For technical support, including 74AHCT541PW/AUJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT541PW/AUJ requirements.
6.How does Aetrix verify that 74AHCT541PW/AUJ is sourced from the original manufacturer or authorized distributors?
All 74AHCT541PW/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 74AHCT541PW/AUJ meets industry standards.
7.What is the process for return or replacement of 74AHCT541PW/AUJ?
All 74AHCT541PW/AUJ units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT541PW/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 74AHCT541PW/AUJ part is unused and in its original packaging.
Return procedure for 74AHCT541PW/AUJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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