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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

NXP Semiconductors 74AHC541D,118

Name: 74AHC541D,118
Brand: NXP Semiconductors
SKU: 74AHC541D,118
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74AHC541D,118

Manufacturer:: NXP Semiconductors

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: -

Datasheet:: 74AHC541D,118.pdf

Description:: IC BUFF/DVR TRI-ST 8BIT 20SOIC

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Product details

Overview

74AHC541D,118 from Nexperia is an octal 3-state buffer/line driver with dual active-low output enables (OE0, OE1), CMOS-level input compatibility, 2.0–5.5 V supply range, and overvoltage-tolerant inputs up to 5.5 V. It supports voltage translation in mixed-supply systems and is used in bus interface, data routing, and memory address buffering applications.

For engineers reviewing the 74AHC541D,118 datasheet, 74AHC541D,118 pinout, 74AHC541D,118 application, or 74AHC541D,118 equivalent, key selection criteria include 3-state timing (tpd ≤ 5.0 ns @ 5 V, CL = 15 pF), dual-OE control logic, SO20 package thermal profile, and input overvoltage tolerance for level-shifting integrity.

Technical Context

This device implements eight independent non-inverting buffers, each with high-impedance tri-state outputs controlled by two separate enable inputs. Its Schmitt-trigger inputs provide noise immunity, while overvoltage-tolerant inputs allow safe operation when driven from 5 V sources even at 2.0 V VCC.

The 74AHC541D operates across -40 °C to +125 °C and delivers balanced propagation delays (tpd = tPLH = tPHL) and matched enable/disable times (ten = tPZH = tPZL; tdis = tPHZ = tPLZ), ensuring deterministic bus timing in synchronous digital systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.0 V to 5.5 V - Enables interoperability across 2.5 V, 3.3 V, and 5 V logic domains without level shifters.
Propagation Delay (tpd)	≤ 5.0 ns @ VCC = 4.5–5.5 V, CL = 15 pF - Supports >100 MHz bus operation with tight timing margins.
Output Drive Strength	±8.0 mA @ VCC = 4.5 V - Sufficient to drive 15 pF loads with <0.55 V VOL and >3.70 V VOH under worst-case conditions.
Input Overvoltage Tolerance	Up to 5.5 V regardless of VCC - Allows direct connection to 5 V buses while powered from lower voltages (e.g., 3.3 V or 2.5 V).
Operating Temperature	-40 °C to +125 °C - Qualified for industrial and extended-temperature embedded control environments.
ESD Protection	HBM >2000 V, CDM >1000 V - Robust handling during PCB assembly and system integration.
Power Dissipation	500 mW max (SO20, Tamb ≤ 109 °C) - Linear derating above 109 °C ensures thermal safety in high-density layouts.

Pinout & Package

74AHC541D,118 is housed in a plastic small outline package (SO20, SOT163-1) with 20 leads and 7.5 mm body width. The package features gull-wing leads, surface-mount compatibility, and JEDEC-standard pin 1 index marking.

Pin/Terminal	Circuit Role	Design Meaning
1 (OE0)	Active-low output enable	Controls Y0–Y7 outputs; LOW enables all eight outputs simultaneously.
2 (VCC)	Positive supply	Primary power rail; accepts 2.0–5.5 V with CMOS-level input thresholds referenced to this node.
3–10 (A0–A7)	Data inputs	Eight buffered inputs with Schmitt-trigger action for noise rejection and clean signal edge detection.
11–18 (Y0–Y7)	3-state outputs	Non-inverting buffered outputs; enter high-impedance state when either OE0 or OE1 is HIGH.
19 (OE1)	Active-low output enable	Secondary enable; OR logic with OE0 - either HIGH disables all outputs.
20 (GND)	Ground reference	0 V return path for all internal circuitry and I/O; required for valid VIH/VIL thresholds and output swing.

Key Features

Feature	Design Value
Dual independent output enables	OE0 and OE1 provide flexible bus arbitration-either can disable all outputs, enabling hierarchical control in multi-driver systems.
Overvoltage-tolerant inputs	Inputs withstand up to 5.5 V independent of VCC, eliminating external clamping diodes when interfacing legacy 5 V logic.
Schmitt-trigger input action	Hysteresis on all A0–A7 inputs rejects noise spikes ≤ 0.3 V, improving reliability in electrically noisy industrial backplanes.
CMOS-level input compatibility	VIH ≥ 3.85 V @ VCC = 5.5 V and VIL ≤ 1.65 V ensures full compatibility with standard CMOS outputs across full supply range.
Low dynamic power dissipation	CPD = 10 pF per buffer - limits switching current and reduces heat generation in high-frequency data paths.

Applications

Industrial PLC Backplane Interface

Embedded Microcontroller Bus Expansion

Use Scenario: Isolating and driving address/data lines between a 3.3 V microcontroller and legacy 5 V peripheral modules on a programmable logic controller backplane.

IC Role / Device Role: Level-translating octal buffer that maintains signal integrity while enabling/disabling bus segments via dual OE control.

Use Value: Eliminates need for discrete level shifters; overvoltage-tolerant inputs accept 5 V signals directly while operating from 3.3 V supply.

Use Scenario: Expanding GPIO count on a Cortex-M4-based motor control board by buffering parallel control signals to multiple stepper driver ICs.

IC Role / Device Role: Non-inverting 3-state line driver providing fan-out capability and bus contention prevention during firmware updates.

Use Value: Dual OE inputs allow synchronized enable/disable of all eight outputs, preventing glitches during reconfiguration sequences.

Automotive Body Control Module (Non-Safety)

Test Equipment Signal Routing

Use Scenario: Driving LED segment displays and relay drivers from a 5 V MCU in a body control unit, where ESD robustness and wide temperature range are critical.

IC Role / Device Role: High-noise-immunity buffer with HBM >2000 V and operation up to +125 °C ambient.

Use Value: Schmitt-trigger inputs reject conducted noise from solenoid switching; guaranteed performance across full automotive extended temp range.

Use Scenario: Multiplexing test vectors from a pattern generator to multiple DUT inputs in automated functional test fixtures.

IC Role / Device Role: Low-propagation-delay (≤5 ns) 3-state driver enabling precise timing alignment across parallel test channels.

Use Value: Matched tpd and ten/tdis ensure sub-10 ns skew between channels, preserving vector timing integrity at 100+ MHz rates.

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
74AHCT541D,118	TTL-compatible inputs (VIH = 2.0 V min); identical pinout, timing, and package.	Better suited for interfacing with legacy 5 V TTL outputs; not overvoltage tolerant beyond 5.5 V.	Select when driving from standard TTL sources; avoid in mixed-voltage translation where inputs exceed VCC.
SN74LVC541APWR	Lower VCC range (1.65–3.6 V); LVTTL-compatible inputs; 32 mA drive; different pinout (TSSOP20).	Optimized for 3.3 V-only systems; lacks overvoltage tolerance and industrial temp grade.	Choose only for cost-sensitive 3.3 V designs requiring higher drive strength; requires PCB redesign due to pin mismatch.

Compared with 74AHCT541D,118, the 74AHC541D,118 offers superior voltage translation flexibility but less native TTL compatibility; versus SN74LVC541APWR, it provides broader supply range and industrial temperature support at the expense of lower drive current.

Availability

74AHC541D,118 is available at Aetrix Electronics and suitable for industrial automation, embedded control, and test equipment requiring stable component supply across extended temperature ranges and mixed-voltage interfaces.

Supply support for 74AHC541D,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 logic, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial and consumer electronics.

The 74AHC541D,118 belongs to Nexperia's AHC logic family, designed specifically for low-power, high-speed 3-state buffering in mixed-supply digital systems requiring robust noise immunity and wide operating margins.

FAQ

Can 74AHC541D,118 be used as a level shifter between 3.3 V and 5 V logic domains?

Yes. Its overvoltage-tolerant inputs accept up to 5.5 V regardless of VCC, allowing 5 V signals to safely drive A0–A7 while powered from 3.3 V. Outputs swing rail-to-rail (VOH ≈ VCC, VOL ≈ 0 V), so bidirectional translation requires external pull-ups or complementary devices.

What is the maximum clock frequency supported by 74AHC541D,118 in a data bus application?

While not a clocked device, its propagation delay (tpd ≤ 5.0 ns @ 5 V, CL = 15 pF) supports reliable operation in asynchronous bus systems with signal periods ≥ 10 ns - effectively enabling data rates up to 100 MHz for single-cycle transfers with adequate setup/hold margin.

How do OE0 and OE1 interact when both are asserted?

Both OE0 and OE1 are active-low. If either is HIGH, all Y0–Y7 outputs go to high-impedance. Only when both are LOW do outputs follow their respective A0–A7 inputs. This OR logic simplifies bus arbitration in multi-driver configurations.

Is 74AHC541D,118 qualified for automotive applications?

No. Although rated for -40 °C to +125 °C, it is not AEC-Q100 qualified and lacks automotive-specific validation (e.g., HTOL, ESD testing per ISO 10605). It may be used in non-safety-critical automotive subsystems at the designer's risk, but not in safety-relevant functions.

74AHC541D,118 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: *

Package/Case:: -

Packaging:: Bulk

Product Status:: Active

Logic Type:: -

Number of Elements:: -

Number of Bits per Element:: -

Input Type:: -

Output Type:: -

Current - Output High, Low:: -

Voltage - Supply:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

74AHC541D,118 FAQ

1.How can I place an order for 74AHC541D,118 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74AHC541D,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 74AHC541D,118 reliable?

The price and inventory of 74AHC541D,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC541D,118 is usually 5 days.

3.What payment methods are accepted for 74AHC541D,118?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC541D,118 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74AHC541D,118?

74AHC541D,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74AHC541D,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 74AHC541D,118?

For technical support, including 74AHC541D,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC541D,118 requirements.

6.How does Aetrix verify that 74AHC541D,118 is sourced from the original manufacturer or authorized distributors?

All 74AHC541D,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 74AHC541D,118 meets industry standards.

7.What is the process for return or replacement of 74AHC541D,118?

All 74AHC541D,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC541D,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 74AHC541D,118 part is unused and in its original packaging.

Return procedure for 74AHC541D,118:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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