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

Texas Instruments SN74LVTH541DBR

Name: SN74LVTH541DBR
Brand: Texas Instruments
SKU: SN74LVTH541DBR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74LVTH541DBR

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 20-SSOP (0.209", 5.30mm Width)

Datasheet:: SN74LVTH541DBR.pdf

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

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Product details

Overview

SN74LVTH541DBR from Texas Instruments is an octal buffer/driver IC designed for 3.3-V V_CC operation with 5-V tolerant inputs and outputs, supporting mixed-mode signal interfacing between 3.3-V logic and legacy 5-V systems. It features dual active-low 3-state enable inputs (OE1/OE2), bus-hold circuitry on all eight data inputs, and I_off/power-up 3-state for hot insertion. It is used in memory address buffering and bidirectional bus driving applications requiring robust noise immunity and undriven input stabilization.

For engineers reviewing the SN74LVTH541DBR datasheet, SN74LVTH541DBR pinout, SN74LVTH541DBR application, or SN74LVTH541DBR equivalent, this page delivers verified electrical parameters, SSOP-20 package layout guidance, bus-hold behavior implications, and validated alternatives for industrial bus interface designs operating across 2.7–3.6 V supply rails.

Technical Context

The SN74LVTH541DBR implements noninverting octal buffering with a dual-input AND-gated 3-state control (OE1 and OE2 both low to enable outputs). Its bus-hold circuitry actively maintains valid logic states on unconnected inputs without external resistors, eliminating pullup/pulldown requirements while consuming ≤±500 µA dynamic hold current at V_CC = 3.6 V.

It supports hot insertion via I_off protection (≤±100 µA off-state current when V_CC = 0) and power-up 3-state behavior-outputs remain high-impedance during V_CC ramp from 0 to 1.5 V, and OE must be pulled high above 1.5 V to guarantee disable state. Absolute maximum ratings include −0.5 V to 7 V input/output voltage tolerance and 128 mA per output sink capability.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.7 V to 3.6 V - Enables stable operation from unregulated batteries or noisy 3.3-V rails without LDO dependency.
Input Voltage Tolerance	−0.5 V to 7 V - Supports direct connection to 5-V TTL buses without level-shifting components.
I_OL / I_OH	64 mA sink / 32 mA source - Drives heavy capacitive loads (e.g., long PCB traces or multiple CMOS inputs) with <0.55 V VOL at 3.3 V.
t_PLH/t_PHL	1.1 ns to 3.9 ns (V_CC = 2.7–3.3 V, C_L = 50 pF) - Ensures sub-4 ns propagation for high-speed address/data buffering in memory subsystems.
Bus-Hold Current	±500 µA max (V_CC = 3.6 V) - Maintains defined logic levels on floating inputs while limiting static power overhead.
Thermal Impedance θ_JA	70 °C/W (SSOP-20 package) - Defines junction-to-ambient temperature rise under full-output switching load for thermal margining.
ESD Rating	2000-V HBM, 200-V MM - Meets industrial IEC 61000-4-2 system-level ESD robustness requirements without external protection.

Pinout & Package

SN74LVTH541DBR is housed in a 20-pin SSOP (Shrink Small Outline Package) with 0.65 mm lead pitch, 7.4 mm × 5.3 mm body size, and 2.0 mm max height. Pin 1 index is located at the top-left corner of the package marking side, with leads arranged in two rows (10 per side).

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4, 5, 6, 7, 8	Data Inputs A1–A8	Noninverting input terminals with integrated bus-hold; eliminate need for external biasing in unterminated bus environments.
9	GND	Ground reference for all internal circuitry and output drivers; requires low-inductance connection to minimize ground bounce (V_OLP < 0.8 V typical).
10	V_CC	3.3-V supply input; supports down to 2.7 V for battery-backed operation; decoupling capacitor (0.1 µF) required near pin.
11, 19	OE1, OE2	Active-low 3-state enable inputs; AND logic requires both low to activate outputs; high on either forces all Y outputs into high-Z.
12, 13, 14, 15, 16, 17, 18, 20	Outputs Y1–Y8	Noninverting buffered outputs capable of 64 mA sink; placed opposite inputs on package to simplify PCB routing and reduce crosstalk.

Key Features

Feature	Design Value
Mixed-mode 5-V/3.3-V interface	Accepts 5-V TTL inputs and drives 5-V loads while powered from 3.3-V rail - eliminates discrete level shifters in mixed-voltage backplanes.
Integrated bus-hold circuitry	Actively holds A1–A8 inputs at valid logic states without external resistors - reduces BOM count and board space in high-pin-count memory interfaces.
I_off and power-up 3-state	Prevents backflow current during hot insertion and ensures outputs stay high-Z during power sequencing - critical for modular computing and telecom line cards.
Low ground bounce (V_OLP)	<0.8 V typical at V_CC = 3.3 V, T_A = 25°C - minimizes noise coupling into adjacent signals during simultaneous output switching.
Latch-up immunity	Exceeds 500 mA per JESD 17 - ensures robust operation in electrically noisy industrial environments with transient voltage spikes.

Applications

Memory Address Buffering	Industrial Backplane Interface
Use Scenario: Driving 16-bit address lines from a 3.3-V microcontroller to multiple 5-V SRAM chips on a shared bus. IC Role / Device Role / Timing Role: Noninverting octal buffer providing level translation, drive strength, and input stabilization for address latching. Use Value: Eliminates external pullups and level shifters while maintaining <4 ns propagation delay and <0.55 V VOL at full load.	Use Scenario: Interfacing a 3.3-V FPGA I/O bank to legacy 5-V peripheral modules in a programmable logic controller rack. IC Role / Device Role / Timing Role: Bidirectional bus driver enabling safe hot-swap of field modules without disrupting master logic. Use Value: I_off and power-up 3-state prevent backfeed damage; bus-hold avoids floating inputs during module insertion/removal.
Automotive Body Control Module	Test Equipment Signal Conditioning
Use Scenario: Buffering sensor input addresses and configuration bits from a 3.3-V MCU to 5-V analog front-end ICs in a vehicle ECU. IC Role / Device Role / Timing Role: Input-stabilizing buffer ensuring deterministic logic states despite harness-induced noise and intermittent connections. Use Value: ±500 µA bus-hold current maintains valid logic under vibration-induced disconnection; 2000-V HBM withstands automotive ESD events.	Use Scenario: Isolating and strengthening digital stimulus signals from a 3.3-V pattern generator before applying to DUTs with 5-V logic thresholds. IC Role / Device Role / Timing Role: High-drive buffer delivering clean, slew-controlled edges to minimize timing skew across parallel test channels. Use Value: 64 mA sink capability drives 50-pF+ loads at <4 ns delay; low ground bounce preserves signal integrity in multi-channel synchronized testing.

Memory Address Buffering

Industrial Backplane Interface

Use Scenario: Driving 16-bit address lines from a 3.3-V microcontroller to multiple 5-V SRAM chips on a shared bus.

IC Role / Device Role / Timing Role: Noninverting octal buffer providing level translation, drive strength, and input stabilization for address latching.

Use Value: Eliminates external pullups and level shifters while maintaining <4 ns propagation delay and <0.55 V VOL at full load.

Use Scenario: Interfacing a 3.3-V FPGA I/O bank to legacy 5-V peripheral modules in a programmable logic controller rack.

IC Role / Device Role / Timing Role: Bidirectional bus driver enabling safe hot-swap of field modules without disrupting master logic.

Use Value: I_off and power-up 3-state prevent backfeed damage; bus-hold avoids floating inputs during module insertion/removal.

Automotive Body Control Module

Test Equipment Signal Conditioning

Use Scenario: Buffering sensor input addresses and configuration bits from a 3.3-V MCU to 5-V analog front-end ICs in a vehicle ECU.

IC Role / Device Role / Timing Role: Input-stabilizing buffer ensuring deterministic logic states despite harness-induced noise and intermittent connections.

Use Value: ±500 µA bus-hold current maintains valid logic under vibration-induced disconnection; 2000-V HBM withstands automotive ESD events.

Use Scenario: Isolating and strengthening digital stimulus signals from a 3.3-V pattern generator before applying to DUTs with 5-V logic thresholds.

IC Role / Device Role / Timing Role: High-drive buffer delivering clean, slew-controlled edges to minimize timing skew across parallel test channels.

Use Value: 64 mA sink capability drives 50-pF+ loads at <4 ns delay; low ground bounce preserves signal integrity in multi-channel synchronized testing.

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC541APWR	Lower drive (24 mA sink), no bus-hold, 1.65–3.6 V V_CC; lacks 5-V input tolerance.	Suitable only for pure 3.3-V systems; requires external pullups if inputs float.	Select when cost and power are prioritized over mixed-voltage compatibility and input stability.
74ALVC541PW	Higher speed (t_PD ≈ 2.5 ns), 1.65–3.6 V V_CC, no 5-V tolerance or bus-hold.	Requires external level translation for 5-V interfaces; unsuitable for undriven bus nodes.	Choose for high-speed 3.3-V-only applications where propagation delay is critical and bus topology is fully driven.

Compared with SN74LVTH541DBR, SN74LVC541APWR offers lower static power but sacrifices 5-V interface capability and bus-hold functionality, while 74ALVC541PW improves speed marginally but removes essential mixed-mode and floating-input handling features required in industrial bus designs.

Availability

SN74LVTH541DBR is available at Aetrix Electronics and suitable for memory address buffering, industrial backplane interfacing, and automotive body control module designs requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for SN74LVTH541DBR 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with decades of expertise in industrial-grade interface ICs and automotive-qualified products.

The SN74LVTH541DBR belongs to TI's LVTH logic family, engineered specifically for robust mixed-voltage bus interfacing in harsh environments where reliability, hot-swap capability, and input stability are critical design requirements.

FAQ

What is the recommended V_CC operating range for SN74LVTH541DBR?

The SN74LVTH541DBR is specified for continuous operation from 2.7 V to 3.6 V. Operation below 2.7 V may cause undefined output states or increased propagation delay; above 3.6 V risks permanent damage per absolute maximum ratings. For battery-powered systems, the 2.7-V lower limit enables direct use with partially discharged Li-ion or alkaline cells without regulation.

Does SN74LVTH541DBR require external pullup resistors on its inputs?

No. The SN74LVTH541DBR integrates bus-hold circuitry on all eight A-inputs (A1–A8), which actively maintains a valid logic state when inputs are floating or undriven. Using external pullup or pulldown resistors with enabled bus-hold is explicitly discouraged in the datasheet, as it creates contention and increases power consumption.

How does the dual-enable (OE1/OE2) logic work on SN74LVTH541DBR?

The SN74LVTH541DBR uses a 2-input AND gate for 3-state control: both OE1 and OE2 must be low to enable outputs Y1–Y8. If either OE1 or OE2 is high, all outputs enter high-impedance state regardless of A-input values. This allows flexible control schemes - e.g., OE1 tied to system enable, OE2 to local bus arbitration signal.

Can SN74LVTH541DBR be used in hot-swap applications?

Yes. The SN74LVTH541DBR incorporates I_off protection (≤±100 µA when V_CC = 0) and power-up 3-state circuitry that holds outputs high-Z until V_CC exceeds ~1.5 V. These features prevent damaging current backflow and bus conflicts during live insertion, making it suitable for modular telecom and industrial backplane systems.

What is the thermal performance of SN74LVTH541DBR in its SSOP-20 package?

The SN74LVTH541DBR in SSOP-20 (DB package) has a junction-to-ambient thermal resistance (θ_JA) of 70 °C/W under standard JEDEC conditions. At full 64 mA per output sink with 8 outputs active, power dissipation reaches ~180 mW; this yields ~12.6 °C junction-to-ambient rise above ambient - well within safe silicon operating limits up to +85°C ambient.

SN74LVTH541DBR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74LVTH

Package/Case:: 20-SSOP (0.209", 5.30mm 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:: 32mA, 64mA

Voltage - Supply:: 2.7V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 20-SSOP

SN74LVTH541DBR FAQ

1.How can I place an order for SN74LVTH541DBR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74LVTH541DBR 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 SN74LVTH541DBR reliable?

The price and inventory of SN74LVTH541DBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTH541DBR is usually 5 days.

3.What payment methods are accepted for SN74LVTH541DBR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVTH541DBR transactions.

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4.How is shipping managed for SN74LVTH541DBR?

SN74LVTH541DBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74LVTH541DBR 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 SN74LVTH541DBR?

For technical support, including SN74LVTH541DBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTH541DBR requirements.

6.How does Aetrix verify that SN74LVTH541DBR is sourced from the original manufacturer or authorized distributors?

All SN74LVTH541DBR 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 SN74LVTH541DBR meets industry standards.

7.What is the process for return or replacement of SN74LVTH541DBR?

All SN74LVTH541DBR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTH541DBR, 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 SN74LVTH541DBR part is unused and in its original packaging.

Return procedure for SN74LVTH541DBR:

1.Submit a request within 90 days.

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

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