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

Texas Instruments SN74LVTH541PW

Name: SN74LVTH541PW
Brand: Texas Instruments
SKU: SN74LVTH541PW
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74LVTH541PW

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: SN74LVTH541PW.pdf

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

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Product details

Overview

SN74LVTH541PW from Texas Instruments is an octal buffer/driver IC designed for 3.3-V V_CC operation with TTL-compatible 5-V input/output signaling. It features dual active-low 3-state enable (OE1/OE2), bus-hold on all eight data inputs, and supports hot insertion via I_off and power-up 3-state. Used in memory address buffering and bus line driving in mixed-voltage industrial control systems.

For engineers reviewing the SN74LVTH541PW datasheet, SN74LVTH541PW pinout, SN74LVTH541PW application, or SN74LVTH541PW equivalent, this page delivers verified electrical specs, TSSOP-20 package layout, bus-hold behavior, output drive capability (64 mA sink), and hot-swap compatibility - all confirmed for the exact PW-packaged variant.

Technical Context

This device implements a noninverting octal buffer with dual AND-gated 3-state control logic: outputs enter high-impedance only when both OE1 and OE2 are low. Its bus-hold circuitry maintains valid logic states on undriven inputs without external resistors, drawing ±500 µA max at V_CC = 3.6 V.

It operates across 2.7–3.6 V V_CC, tolerates 5.5-V inputs, and meets JESD 17 latch-up (>500 mA) and JESD 22 ESD standards (2000-V HBM, 200-V MM). Output ground bounce (V_OLP) remains <0.8 V at V_CC = 3.3 V, TA = 25°C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.7 V to 3.6 V - enables stable operation from unregulated batteries down to 2.7 V without brownout reset circuitry.
I_OL (max)	64 mA - drives heavy capacitive loads (e.g., 50-pF bus traces) with t_PHL/t_PLH ≤ 3.9 ns at V_CC = 3.3 V.
Bus-Hold Current	±500 µA - actively holds floating inputs at valid logic levels, eliminating need for external pullup/pulldown resistors.
I_off	±100 µA - blocks current backflow during hot insertion when powered down, protecting upstream drivers.
t_PZH/t_PZL	1.4–6.3 ns - fast 3-state enable/disable timing ensures glitch-free bus arbitration in multiplexed systems.
θ_JA	83 °C/W - thermal resistance of TSSOP-20 (PW) package requires minimal heatsinking in ambient ≤85°C environments.
V_IK	−1.2 V - negative input clamp voltage allows safe interfacing with legacy 5-V TTL outputs under transient conditions.

Pinout & Package

TSSOP-20 (PW) package: 4.4 mm × 6.5 mm body, 0.65 mm lead pitch, 1.2 mm max height, gull-wing leads, RoHS-compliant NiPdAu finish, MSL Level-1.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4, 5, 6, 7, 8	Data Inputs (A1–A8)	Noninverting inputs with integrated bus-hold; accept 0–5.5 V signals while V_CC = 2.7–3.6 V.
9	GND	Ground reference for all internal circuitry and output drivers; must be low-impedance connection.
10	V_CC	3.3-V supply pin; bypass with 0.1 µF ceramic capacitor near pin to suppress switching noise.
11, 19	OE1, OE2	Active-low 3-state enable inputs; outputs go high-Z only if both are low (2-input AND logic).
12, 13, 14, 15, 16, 17, 18, 20	Data Outputs (Y1–Y8)	Noninverting buffered outputs; each sinks up to 64 mA or sources up to 32 mA at V_CC = 3.3 V.

Key Features

Feature	Design Value
Mixed-mode signal interface	Accepts 5-V TTL inputs and drives 5-V loads while operating from 3.3-V V_CC, eliminating level-shifters in 3.3/5-V system interconnects.
Hot-insertion support	I_off and power-up 3-state prevent damaging current flow and bus conflicts during live board replacement in telecom or server backplanes.
Bus-hold circuitry	Eliminates external pullup/pulldown resistors on A1–A8, reducing BOM count and PCB area while preventing floating-input metastability.
Low output ground bounce	V_OLP < 0.8 V at V_CC = 3.3 V ensures clean logic thresholds even during simultaneous 8-bit output switching.
Latch-up immunity	Exceeds 500 mA per JESD 17, enabling robust operation in noisy industrial environments with EFT or surge transients.

Applications

Industrial PLC Backplane Interface	Memory Address Buffering
Use Scenario: Interfacing 3.3-V microcontroller address/data buses to legacy 5-V peripheral modules in programmable logic controllers. IC Role / Device Role / Timing Role: Noninverting octal buffer translating logic levels while maintaining timing integrity across mixed-voltage domains. Use Value: Enables direct connection without discrete level shifters; bus-hold prevents glitches during controller reset sequences.	Use Scenario: Driving 8-bit address lines from an FPGA to multiple parallel SRAM chips in embedded instrumentation. IC Role / Device Role / Timing Role: Low-skew address register buffer with fast 3-state control for shared memory bus arbitration. Use Value: 3.9 ns max propagation delay and 6.3 ns max disable time ensure setup/hold compliance for 25-MHz SRAM access.
Hot-Swappable Module Control	Legacy Bus Signal Conditioning
Use Scenario: Enabling/disabling signal paths in modular telecom line cards that plug into live backplanes. IC Role / Device Role / Timing Role: Hot-insertion–qualified buffer providing I_off-protected isolation and controlled 3-state entry/exit. Use Value: Prevents backdrive damage during insertion; power-up 3-state avoids bus contention before firmware initialization.	Use Scenario: Cleaning up slow-rising or noisy signals from aging 5-V TTL peripherals before sampling by modern 3.3-V ADCs or logic analyzers. IC Role / Device Role / Timing Role: Input conditioning buffer with hysteresis-free bus-hold, ensuring clean digital capture. Use Value: Eliminates need for Schmitt-trigger buffers or RC filters; ±500 µA hold current stabilizes marginal input waveforms.

Industrial PLC Backplane Interface

Memory Address Buffering

Use Scenario: Interfacing 3.3-V microcontroller address/data buses to legacy 5-V peripheral modules in programmable logic controllers.

IC Role / Device Role / Timing Role: Noninverting octal buffer translating logic levels while maintaining timing integrity across mixed-voltage domains.

Use Value: Enables direct connection without discrete level shifters; bus-hold prevents glitches during controller reset sequences.

Use Scenario: Driving 8-bit address lines from an FPGA to multiple parallel SRAM chips in embedded instrumentation.

IC Role / Device Role / Timing Role: Low-skew address register buffer with fast 3-state control for shared memory bus arbitration.

Use Value: 3.9 ns max propagation delay and 6.3 ns max disable time ensure setup/hold compliance for 25-MHz SRAM access.

Hot-Swappable Module Control

Legacy Bus Signal Conditioning

Use Scenario: Enabling/disabling signal paths in modular telecom line cards that plug into live backplanes.

IC Role / Device Role / Timing Role: Hot-insertion–qualified buffer providing I_off-protected isolation and controlled 3-state entry/exit.

Use Value: Prevents backdrive damage during insertion; power-up 3-state avoids bus contention before firmware initialization.

Use Scenario: Cleaning up slow-rising or noisy signals from aging 5-V TTL peripherals before sampling by modern 3.3-V ADCs or logic analyzers.

IC Role / Device Role / Timing Role: Input conditioning buffer with hysteresis-free bus-hold, ensuring clean digital capture.

Use Value: Eliminates need for Schmitt-trigger buffers or RC filters; ±500 µA hold current stabilizes marginal input waveforms.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC541APW	No bus-hold; lower drive (24 mA sink); 1.65–3.6 V V_CC; no 5-V tolerant inputs.	Suitable only in fully 3.3-V systems with externally terminated inputs; cannot replace SN74LVTH541PW in mixed-voltage interfaces.	Select only if cost sensitivity outweighs 5-V tolerance and bus-hold requirements.
74ALVCH162244DL	16-bit, dual-supply (1.65–3.6 V), no 5-V input tolerance, higher pin count (48-pin SSOP), no bus-hold.	Used in wide-bus applications (e.g., 16-bit data paths); incompatible pinout and voltage domain - not drop-in.	Consider only for new 16-bit designs requiring higher density; not a functional substitute for SN74LVTH541PW.

Compared with SN74LVC541APW and 74ALVCH162244DL, the SN74LVTH541PW uniquely combines 5-V input tolerance, bus-hold, hot-swap readiness, and TSSOP-20 footprint - making it irreplaceable in legacy-system upgrades where signal integrity and mixed-voltage interoperability are mandatory.

Availability

SN74LVTH541PW is available at Aetrix Electronics and suitable for industrial PLC backplane interfaces, memory address buffering, hot-swappable module control, and legacy bus signal conditioning requiring stable component supply across extended temperature ranges (−40°C to 85°C).

Supply support for SN74LVTH541PW 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.

The SN74LVTH541PW belongs to TI's LVTH logic family, engineered specifically for robust mixed-voltage system interfacing - targeting applications where 3.3-V logic must reliably communicate with legacy 5-V infrastructure.

FAQ

What is the maximum output sink current for SN74LVTH541PW?

The SN74LVTH541PW supports up to 64 mA per output (I_OL) at V_CC = 3.3 V, as specified in the recommended operating conditions table. This rating applies across the full −40°C to 85°C temperature range and enables direct driving of moderate-capacitance buses or LED indicators without external amplification. The SN74LVTH541PW maintains this performance while delivering low ground bounce (<0.8 V).

Does SN74LVTH541PW require external pullup resistors on its inputs?

No. The SN74LVTH541PW integrates bus-hold circuitry on all eight data inputs (A1–A8), which actively maintains valid logic states on undriven or floating inputs. Using external pullup or pulldown resistors with the SN74LVTH541PW is explicitly discouraged in the datasheet, as it may interfere with bus-hold operation and increase power consumption unnecessarily.

Can SN74LVTH541PW operate with a 2.5-V supply voltage?

No. The SN74LVTH541PW has a minimum recommended V_CC of 2.7 V per the datasheet's recommended operating conditions. Operation below 2.7 V is not guaranteed - parameters such as VOL, VOH, and t_PLH fall outside specification, and bus-hold functionality may become unreliable. For 2.5-V systems, consider the SN74LVC541A series instead.

What is the function of the dual OE pins (OE1 and OE2) on SN74LVTH541PW?

The SN74LVTH541PW uses a 2-input AND gate for 3-state control: outputs Y1–Y8 enter high-impedance only when *both* OE1 and OE2 are logic low. If either OE pin is high, all outputs are forced high-Z. This architecture allows flexible enable logic - e.g., one OE tied to system enable, the other to local module select - enhancing bus arbitration safety in multi-master systems.

Is SN74LVTH541PW suitable for hot-plug applications?

Yes. The SN74LVTH541PW is explicitly qualified for hot insertion via two mechanisms: I_off circuitry disables outputs when V_CC = 0 V, preventing back-current flow; and power-up 3-state ensures outputs remain high-Z until V_CC exceeds 1.5 V. These features are validated per JEDEC standards and documented in the SN74LVTH541PW datasheet's "description/ordering information" section.

SN74LVTH541PW Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74LVTH

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

Packaging:: Tube

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-TSSOP

SN74LVTH541PW FAQ

1.How can I place an order for SN74LVTH541PW through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74LVTH541PW 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 SN74LVTH541PW reliable?

The price and inventory of SN74LVTH541PW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTH541PW is usually 5 days.

3.What payment methods are accepted for SN74LVTH541PW?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVTH541PW transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74LVTH541PW?

SN74LVTH541PW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74LVTH541PW 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 SN74LVTH541PW?

For technical support, including SN74LVTH541PW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTH541PW requirements.

6.How does Aetrix verify that SN74LVTH541PW is sourced from the original manufacturer or authorized distributors?

All SN74LVTH541PW 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 SN74LVTH541PW meets industry standards.

7.What is the process for return or replacement of SN74LVTH541PW?

All SN74LVTH541PW units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTH541PW, 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 SN74LVTH541PW part is unused and in its original packaging.

Return procedure for SN74LVTH541PW:

1.Submit a request within 90 days.

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

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