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Nexperia USA Inc. 74AHCT541PW,118
- Part No.:
- 74AHCT541PW,118
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74AHCT541PW,118.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:14,803
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Product details
Overview
74AHCT541PW,118 from Nexperia is an octal 3-state buffer/line driver with dual active-low output enables (OE0, OE1), TTL-compatible input thresholds, 20-pin TSSOP package, −40 °C to +125 °C operation, and 5.0 V supply compatibility - used for bidirectional data bus isolation in industrial control backplanes and legacy microcontroller I/O expansion.
For engineers reviewing the 74AHCT541PW,118 datasheet, 74AHCT541PW,118 pinout, 74AHCT541PW,118 application, or 74AHCT541PW,118 equivalent, key selection criteria include TTL-level input compatibility, 3-state timing (tpd ≤ 5.0 ns @ 5 V/15 pF), overvoltage-tolerant inputs (to 5.5 V), low ICC (≤ 4.0 μA typical), and thermal performance in TSSOP20 at +125 °C ambient.
Technical Context
This device implements eight independent non-inverting buffers, each with output enable control via two shared active-low signals (OE0 and OE1). Its TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V) ensure reliable interfacing with legacy 5 V logic families.
Propagation delay (tpd) is specified from 3.5 ns (typical, 5 V/15 pF) to 11.0 ns (max, 5 V/50 pF); enable (ten) and disable (tdis) times are tightly controlled (≤ 12.5 ns max), supporting high-speed bus arbitration in real-time embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74AHCT - TTL-input compatible CMOS, enabling direct interface with 5 V microcontrollers without level shifters. |
| Supply Voltage Range | 4.5 V to 5.5 V - supports stable operation across standard 5 V rail tolerances (±10 %). |
| Propagation Delay (tpd) | 3.5 ns (typ), 7.0 ns (max) @ VCC = 5.0 V, CL = 15 pF - ensures sub-10 ns signal path for 100 MHz bus timing budgets. |
| Output Drive Strength | ±8.0 mA @ VOH/VOL - sufficient to drive 50 Ω transmission lines or 10 LSTTL loads without external buffering. |
| Input Overvoltage Tolerance | Inputs rated to 5.5 V regardless of VCC - allows safe use in mixed-voltage domains (e.g., 3.3 V VCC with 5 V input signals). |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive modules and industrial motor drives requiring extended thermal range. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - meets IEC 61000-4-2 Level 2 requirements for board-level robustness. |
Pinout & Package
TSSOP20 (SOT360-1) package: 20-pin thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE0) | Active-low output enable 0 | Controls Y0–Y7 outputs when asserted LOW; tied HIGH disables all outputs to high-Z state. |
| 2 (VCC) | Positive supply | Primary 4.5–5.5 V power rail; decoupling capacitor required within 10 mm for noise immunity. |
| 3–10 (A0–A7) | Data inputs | Eight asynchronous TTL-level inputs; Schmitt-trigger action not present (unlike AHC variant). |
| 11–18 (Y0–Y7) | 3-state buffered outputs | Non-inverting outputs; high-impedance when either OE0 or OE1 is HIGH. |
| 19 (OE1) | Active-low output enable 1 | Redundant enable for fault-tolerant bus control; both OE0 and OE1 must be LOW for output activation. |
| 20 (GND) | Ground reference | 0 V return path; requires low-inductance connection to minimize ground bounce during switching. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent output enables | OE0 and OE1 provide redundant or split-bus control - enables hot-swap arbitration and fail-safe bus isolation. |
| TTL-compatible input thresholds | VIH ≥ 2.0 V, VIL ≤ 0.8 V at 5 V supply - eliminates need for external level translators when interfacing with 74LS, 74F, or MCU GPIOs. |
| Overvoltage-tolerant inputs | Withstands 5.5 V input signals even at VCC = 4.5 V - prevents latch-up during power sequencing mismatches. |
| Low static current | ICC ≤ 4.0 μA typical at 5.5 V - reduces quiescent power in always-on monitoring circuits. |
| High-temperature operation | Specified up to +125 °C ambient - supports placement near power MOSFETs or in sealed enclosures without derating. |
Applications
| Industrial PLC Backplane | Legacy Microcontroller I/O Expansion |
|---|---|
Use Scenario: Isolating field I/O modules from central CPU bus in programmable logic controllers operating at 5 V. IC Role / Device Role / Timing Role: Bidirectional 3-state buffer enabling time-multiplexed read/write access to analog input cards and digital output drivers. Use Value: Dual OE pins allow synchronized bus release across multiple 74AHCT541PW units, preventing contention during firmware updates. |
Use Scenario: Extending GPIO count on 8-bit MCUs (e.g., ATmega328P) driving LED arrays and keypad scanners. IC Role / Device Role / Timing Role: Non-inverting line driver translating MCU port pins to 5 V logic levels while providing bus contention protection. Use Value: TTL input compatibility eliminates external pull-ups; 8.0 mA drive strength directly sinks common-anode LED segments. |
| Automotive Body Control Module | Test Equipment Signal Conditioning |
Use Scenario: Interfacing CAN transceiver status lines and sensor diagnostics to a 5 V microcontroller in BCMs. IC Role / Device Role / Timing Role: Level-shifting and fan-out buffer for open-drain diagnostic signals requiring 5 V logic compatibility. Use Value: −40 °C to +125 °C rating matches under-dash thermal profiles; overvoltage tolerance protects against load-dump transients. |
Use Scenario: Routing and isolating DUT signals in automated test fixtures handling mixed-voltage DUTs (3.3 V/5 V). IC Role / Device Role / Timing Role: Direction-controlled bus buffer enabling stimulus injection and response capture without signal reflection. Use Value: Sub-10 ns propagation delay preserves edge integrity for 50 MHz digital pattern generation; 3-state outputs prevent fixture crosstalk. |
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 |
|---|---|---|---|
| 74AHC541PW,118 | CMOS-input variant (VIH = 3.85 V min @ 5.5 V); lower ICC (≤ 0.1 μA), higher noise margin, but incompatible with TTL sources. | Suitable only where driving logic is 3.3 V or CMOS-compatible; not usable with 74LS or older 5 V MCUs. | Select when system uses pure CMOS signaling and ultra-low standby power is critical. |
| SN74LVC541APWR | 3.3 V-only supply (1.65–3.6 V); LVCMOS inputs; 24 mA drive; smaller TSSOP20 footprint (4.4 × 6.5 mm vs. 4.4 × 6.6 mm). | Requires level translation for 5 V buses; unsuitable for direct replacement in 5 V designs without redesign. | Choose for new 3.3 V systems prioritizing higher drive strength and lower voltage operation. |
Compared with 74AHC541PW,118 and SN74LVC541APWR, the 74AHCT541PW,118 uniquely bridges legacy 5 V TTL logic and modern CMOS power efficiency - offering drop-in compatibility with existing 5 V schematics while delivering < 10 μA ICC and guaranteed 125 °C operation.
Availability
74AHCT541PW,118 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, legacy microcontroller I/O expansion, and test equipment signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for 74AHCT541PW,118 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 delivering high-performance, reliable logic, discrete, and MOSFET solutions optimized for efficiency-critical applications.
The 74AHCT series targets interoperability between legacy TTL systems and modern low-power CMOS design - specifically engineered for 5 V mixed-signal environments demanding robust noise immunity and wide temperature operation.
FAQ
Can 74AHCT541PW,118 operate with a 3.3 V supply?
No. The 74AHCT541PW,118 is specified only for 4.5 V to 5.5 V operation. At 3.3 V, input thresholds fall outside TTL-compatibility range (VIH minimum becomes undefined), and output drive degrades below specification. Use 74AHC541PW,118 or 74LVC541 for 3.3 V systems.
What is the maximum capacitive load this device can drive reliably?
The datasheet specifies timing parameters up to 50 pF load capacitance. For reliable operation beyond 50 pF, propagation delay increases linearly (e.g., +1.5 ns per additional 10 pF at 5 V), and output rise/fall times degrade. Keep total trace + load capacitance ≤ 50 pF for guaranteed timing compliance.
Are OE0 and OE1 logically OR'd or AND'd internally?
OE0 and OE1 are OR'd: outputs go high-impedance if *either* OE0 *or* OE1 is HIGH. Both must be LOW for outputs to be active. This is confirmed by Table 3 (Functional table) showing Z output when "X H" or "H X" - meaning any one enable HIGH forces high-Z.
Does this part have built-in ESD protection on all pins?
Yes. Per Section 2, it features HBM ESD protection exceeding 2000 V and CDM protection exceeding 1000 V on all I/O pins, meeting JEDEC JS-001 Class 2 and JS-002 Class C3 standards - verified by factory qualification testing, not just process-level capability.
74AHCT541PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- 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,118 FAQ
1.How can I place an order for 74AHCT541PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT541PW,118 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,118 reliable?
The price and inventory of 74AHCT541PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT541PW,118 is usually 5 days.
3.What payment methods are accepted for 74AHCT541PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT541PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT541PW,118?
74AHCT541PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT541PW,118 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,118?
For technical support, including 74AHCT541PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT541PW,118 requirements.
6.How does Aetrix verify that 74AHCT541PW,118 is sourced from the original manufacturer or authorized distributors?
All 74AHCT541PW,118 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,118 meets industry standards.
7.What is the process for return or replacement of 74AHCT541PW,118?
All 74AHCT541PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT541PW,118, 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,118 part is unused and in its original packaging.
Return procedure for 74AHCT541PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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