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

Diodes Incorporated 74LVC541AT20-13

Name: 74LVC541AT20-13
Brand: Diodes Incorporated
SKU: 74LVC541AT20-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74LVC541AT20-13

Manufacturer:: Diodes Incorporated

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 20-TSSOP (0.173", 4.40mm Width)

Datasheet:: 74LVC541AT20-13.pdf

Description:: IC BUF NON-INVERT 3.6V 20TSSOP

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Product details

Overview

74LVC541AT20-13 from Diodes Incorporated is an octal non-inverting 3-state buffer/line driver in TSSOP-20 package, designed for bus driving and memory address register buffering. It operates from 1.65V to 3.6V, sinks/sources up to 24mA at V_CC = 3.0V, features 5.5V-tolerant inputs, and supports partial power-down via IOFF circuitry. Used in PC motherboard I/O expansion and notebook peripheral interfaces.

For engineers reviewing the 74LVC541AT20-13 datasheet, 74LVC541AT20-13 pinout, 74LVC541AT20-13 application, or 74LVC541AT20-13 equivalent, key selection criteria include dual active-low output enable control (OE1/OE2), Schmitt-trigger inputs for noise immunity, bus-hold capability not present, and TSSOP-20 thermal resistance (θ_JA = 74°C/W) for compact board layouts.

Technical Context

The device implements two independent 2-input AND gates for output enable logic: both OE1 and OE2 must be low to activate outputs; either high forces all eight B outputs into high-impedance state. Inputs and outputs are placed on opposite sides of the TSSOP-20 package to simplify PCB routing and reduce crosstalk.

IOFF circuitry actively disables outputs during power-down by disconnecting internal paths when V_CC = 0V, preventing back-current flow from live buses into unpowered ICs. Input tolerance to 5.5V enables direct interfacing with legacy 5V logic without level shifters in mixed-voltage systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	1.65V–3.6V: Enables operation across 1.8V, 2.5V, and 3.3V logic domains without external regulation.
Output Drive Strength	±24mA at V_CC = 3.0V: Sufficient to drive standard 50Ω transmission lines or multiple CMOS loads on shared buses.
Input Voltage Tolerance	Up to 5.5V: Allows direct connection to 5V peripherals (e.g., legacy USB transceivers, SPI flash) without clamping diodes.
Propagation Delay	3.8ns typical at 3.3V: Supports >100MHz bus toggle rates with timing margin for setup/hold in synchronous designs.
IOFF Leakage Current	±10μA max at V_CC = 0V: Limits backfeed current to <100μA per pin during hot-swap or partial-power-down sequences.
ESD Protection	2kV HBM / 1kV CDM: Meets industrial IEC 61000-4-2 Level 3 requirements for board-level ESD robustness.
Thermal Resistance θ_JA	74°C/W (TSSOP-20): Requires ≤350mW power dissipation to maintain junction temperature <125°C at 85°C ambient.

Pinout & Package

TSSOP-20 package: 6.4mm × 6.5mm × 1.2mm body, 0.65mm lead pitch, exposed pad not present. Pin 1 marked by notch; pins numbered counterclockwise from top-left corner.

Pin/Terminal	Circuit Role	Design Meaning
1, 19	OE1, OE2	Active-low dual output enable inputs: Both must be LOW for output drivers to conduct; either HIGH forces all B outputs to high-Z.
2–9	A1–A8	Non-inverting data inputs: Directly routed to corresponding B outputs when enabled; Schmitt-triggered for noise rejection.
10	GND	Digital ground reference: Must be connected to system ground plane with low-inductance path to minimize ground bounce.
11–18	B8–B1	3-state buffered outputs: Match input logic state when enabled; high-impedance when either OE is HIGH.
20	V_CC	Power supply: Decoupling capacitor (100nF X7R) required within 5mm of pin to suppress switching noise.

Key Features

Feature	Design Value
Dual independent output enables	OE1 and OE2 allow selective activation of subsets of outputs-e.g., A1–A4/B1–B4 controlled separately from A5–A8/B5–B8.
5.5V-tolerant inputs	Eliminates need for external level translators when interfacing with 5V microcontrollers or legacy peripherals in 3.3V systems.
IOFF partial power-down	Prevents destructive current flow from powered bus lines into unpowered 74LVC541A during system sleep or hot-plug events.
Schmitt-trigger inputs	Hysteresis ≥0.3V ensures reliable switching despite slow-rising signals or noisy environments (e.g., long PCB traces).
Low dynamic ground bounce	VOLP < 0.8V at V_CC = 3.3V reduces noise coupling into adjacent analog circuits or clock domains.

Applications

PC Motherboard I/O Expansion

Notebook Peripheral Interface

Use Scenario: Buffering LPC bus signals between EC (Embedded Controller) and Super I/O chip on compact laptop motherboards.

IC Role / Device Role / Timing Role: Non-inverting 3-state buffer isolating EC address/data lines during firmware updates or suspend/resume transitions.

Use Value: Dual OE control allows independent gating of LPC reset and clock-enable lines while maintaining signal integrity at 33MHz.

Use Scenario: Driving SMBus lines from 3.3V PMIC to 5V battery fuel gauge IC in ultrabook battery management subsystem.

IC Role / Device Role / Timing Role: Level-shifting buffer enabling bidirectional communication without external voltage translators.

Use Value: 5.5V input tolerance permits direct connection to 5V fuel gauge I/O while powered from 3.3V rail, reducing BOM count by one IC.

Industrial PLC Backplane Interface

Set-Top Box HDMI CEC Bus Isolation

Use Scenario: Isolating Modbus RTU address lines between 24V-powered field I/O modules and 3.3V ARM-based controller CPU.

IC Role / Device Role / Timing Role: Octal buffer providing galvanically isolated signal conditioning (via optocoupler + buffer) for noise-prone factory floor wiring.

Use Value: ±24mA drive strength ensures reliable edge transitions over 10m twisted-pair cables with 100pF/m capacitance.

Use Scenario: Buffering CEC (Consumer Electronics Control) signals between 3.3V SoC and 5V HDMI sink devices in digital TV platforms.

IC Role / Device Role / Timing Role: Bidirectional bus driver with fast enable/disable timing (t_EN/t_DIS ≤ 8ns at 3.3V) meeting CEC timing spec t_LOW = 1.5ms.

Use Value: Schmitt-trigger inputs reject common-mode noise from HDMI cable shielding, preventing false CEC command detection.

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	TI part in TSSOP-20; identical V_CC range and 5.5V-tolerant inputs but lacks IOFF circuitry.	No partial power-down protection: unsuitable for hot-swap or multi-rail systems where V_CC may be unpowered.	Select only if system guarantees simultaneous power-up/down of all rails and no bus contention during power sequencing.
74LVC244APW,118	Nexperia part in TSSOP-20; same pinout and function but rated for −40°C to +125°C (vs. +85°C for Diodes part).	Higher temperature grade enables use in automotive under-hood modules or industrial motor drives with elevated ambient.	Choose when extended temperature operation is required; verify compatibility of OE logic (dual vs. single enable) in existing layout.

Compared with SN74LVC541APWR and 74LVC244APW,118, the 74LVC541AT20-13 uniquely combines IOFF-enabled partial power-down with Schmitt-trigger inputs in a cost-optimized TSSOP-20 footprint-critical for portable electronics requiring robust hot-plug behavior and noise immunity.

Availability

74LVC541AT20-13 is available at Aetrix Electronics and suitable for PC motherboard I/O expansion, notebook peripheral interface, and industrial PLC backplane interface requiring stable component supply across production lifecycles.

Supply support for 74LVC541AT20-13 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for computing, industrial, and consumer markets.

The 74LVC logic family targets low-voltage, mixed-signal system interfacing-designed specifically for 1.65V–3.6V operation with 5V-tolerant inputs to bridge legacy and modern logic domains.

FAQ

What is the maximum operating frequency supported by the 74LVC541AT20-13?

The device supports bus toggle rates up to 100MHz based on its 3.8ns typical propagation delay at 3.3V. Real-world maximum frequency depends on load capacitance and PCB trace impedance; for 30pF loads and 50Ω termination, reliable operation is confirmed to 85MHz per Diodes' switching characteristics test conditions.

Can OE1 and OE2 be tied together for single-enable operation?

Yes-OE1 and OE2 can be connected to a common control signal. The internal 2-input AND gate requires both inputs low to enable outputs, so tying them together maintains functional equivalence to a single active-low enable, preserving compatibility with designs using single-OE buffers like the 74LVC244.

Does the 74LVC541AT20-13 include bus-hold circuitry on inputs?

No-this device does not incorporate bus-hold (auto-bias) circuitry. Unused inputs must be externally terminated to V_CC or GND per the datasheet's recommended operating conditions to prevent floating nodes and potential shoot-through current.

Is the TSSOP-20 package RoHS-compliant and halogen-free?

Yes-the 74LVC541AT20-13 is fully RoHS 2 compliant (2011/65/EU) and halogen/antimony free ("Green" per Diodes' definition: <900ppm Br, <900ppm Cl, <1000ppm Sb), with no purposely added lead.

74LVC541AT20-13 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: 74LVC

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:: 24mA, 24mA

Voltage - Supply:: 1.65V ~ 3.6V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 20-TSSOP

74LVC541AT20-13 FAQ

1.How can I place an order for 74LVC541AT20-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74LVC541AT20-13 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 74LVC541AT20-13 reliable?

The price and inventory of 74LVC541AT20-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC541AT20-13 is usually 5 days.

3.What payment methods are accepted for 74LVC541AT20-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC541AT20-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74LVC541AT20-13?

74LVC541AT20-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74LVC541AT20-13 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 74LVC541AT20-13?

For technical support, including 74LVC541AT20-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC541AT20-13 requirements.

6.How does Aetrix verify that 74LVC541AT20-13 is sourced from the original manufacturer or authorized distributors?

All 74LVC541AT20-13 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 74LVC541AT20-13 meets industry standards.

7.What is the process for return or replacement of 74LVC541AT20-13?

All 74LVC541AT20-13 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC541AT20-13, 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 74LVC541AT20-13 part is unused and in its original packaging.

Return procedure for 74LVC541AT20-13:

1.Submit a request within 90 days.

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

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