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Texas Instruments SN74LVC541ADWRE4
- Part No.:
- SN74LVC541ADWRE4
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVC541ADWRE4.pdf
- Description:
- IC BUF NON-INVERT 3.6V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,692
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Product details
Overview
SN74LVC541ADWRE4 from Texas Instruments is an octal non-inverting buffer with 3-state outputs, designed for bus interface and signal redriving in 1.65V–3.6V systems. It features dual active-low output enables (OE1/OE2), 5.1ns max propagation delay at 3.3V, 5.5V-tolerant inputs, and Ioff support for live insertion. It is commonly used to isolate or extend digital buses in industrial controllers and embedded peripherals.
For engineers reviewing the SN74LVC541ADWRE4 datasheet, SN74LVC541ADWRE4 pinout, SN74LVC541ADWRE4 application, or SN74LVC541ADWRE4 equivalent, key selection criteria include 3-state control logic, mixed-voltage interoperability (5V inputs into 3.3V VCC), ground-bounce/undershoot performance, thermal resistance in SOIC-20, and compatibility with high-speed PCB trace routing up to 12 cm.
Technical Context
The SN74LVC541ADWRE4 implements eight independent CMOS buffer channels sharing two active-low enable inputs (OE1 and OE2), both of which must be low to activate outputs - enabling robust bus arbitration. Its balanced 3-state outputs drive high/low with matched sourcing/sinking capability (±24mA at 3V), supporting clean signal integrity on transmission lines.
It integrates partial-power-down (Ioff) protection, allowing safe operation during hot-swap or partial system shutdown, and accepts input voltages up to 5.5V regardless of VCC (1.65V–3.6V), enabling seamless level translation between 5V legacy peripherals and 3.3V logic domains without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 3.6V - Enables direct integration into modern low-voltage microcontroller I/O domains without level shifters. |
| Input Voltage Tolerance | Up to 5.5V - Allows connection to 5V signals (e.g., legacy sensors or UARTs) while powered from 3.3V, eliminating external clamping diodes. |
| tpd (Max) | 5.1ns at VCC = 3.3V, TA = 25°C - Supports >100 MHz data rates on short traces; critical for timing-critical redrive applications. |
| Ioff Leakage | ±10μA max at VI/VO = 5.5V - Ensures negligible current flow during power-down, preventing back-driving or latch-up in mixed-power systems. |
| Output Drive | ±24mA at VCC = 3V - Sufficient to drive 50pF loads or 50Ω transmission lines with controlled edge rates, reducing need for external buffers. |
| ESD Rating | HBM ±2000V, CDM ±1000V - Meets industrial handling requirements without additional ESD protection circuitry on board. |
| Operating Temp | –40°C to +125°C - Qualified for under-hood automotive, industrial PLC, and extended-temperature embedded applications. |
Pinout & Package
SN74LVC541ADWRE4 is housed in a 20-pin SOIC (DW) package measuring 12.80mm × 10.3mm body size, with 0.65mm lead pitch and gull-wing leads. The package supports standard reflow profiles and offers moderate thermal resistance (RθJA = 114.8°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OE1, OE2 | Active-low 3-state enable inputs | Both must be low to enable all eight outputs; provides fail-safe bus isolation when either is high. |
| A1–A8 | Buffer input terminals | CMOS-compatible inputs accepting 0–5.5V; require termination to VCC/GND if unused to prevent floating-induced oscillation. |
| Y1–Y8 | Non-inverting 3-state outputs | Drive high/low or enter high-Z state; capable of sourcing/sinking ±24mA; tolerate 5.5V in high-Z mode. |
| VCC | Positive supply | 1.65–3.6V primary power rail; requires local 0.1μF bypass capacitor placed adjacent to pin 20 for noise suppression. |
| GND | Ground reference | Common return path for all I/O and supply currents; must be low-impedance to minimize ground bounce (VOLP < 0.8V typical). |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode signal operation | 5V-tolerant inputs with 3.3V VCC enable direct interfacing to legacy 5V peripherals without level-shifting ICs or resistive dividers. |
| Low ground bounce (VOLP) | Typical <0.8V at VCC = 3.3V ensures stable logic LOW levels during heavy capacitive switching, reducing false triggering in downstream receivers. |
| Output undershoot control (VOHV) | Typical >2V at VCC = 3.3V limits negative voltage excursions during fast transitions, protecting connected CMOS inputs from latch-up. |
| Ioff partial-power-down | Enables live insertion and prevents back-drive current when VCC = 0V, supporting hot-plug expansion modules and modular system architectures. |
| Latch-up immunity | Exceeds 100mA per JESD78 - eliminates risk of destructive latch-up under transient overvoltage or ESD events in harsh environments. |
Applications
| Industrial Bus Isolation | Digital Signal Redriving |
|---|---|
Use Scenario: Isolating a microcontroller's GPIO bus from noisy motor driver or relay control circuits in programmable logic controllers. IC Role / Device Role / Timing Role: Octal buffer with dual enable logic acts as a directional gate, preventing noise coupling while preserving signal timing integrity. Use Value: Eliminates need for optocouplers or discrete MOSFET switches; maintains sub-5.1ns propagation delay across all eight channels. | Use Scenario: Extending a 3.3V SPI clock/data bus beyond 12 cm trace length to reach remote sensor nodes on a multi-layer PCB. IC Role / Device Role / Timing Role: Redriver restoring signal amplitude and edge rate after capacitive loss on long traces. Use Value: Enables reliable 20+ MHz SPI communication without impedance-matched routing or external series termination resistors. |
| Controller Reset Hold | LED Indicator Driving |
Use Scenario: Holding peripheral enable signals active during MCU reset sequences in automotive body control modules. IC Role / Device Role / Timing Role: 3-state buffer latched in enabled state via fixed OE1/OE2 grounding, maintaining output state while host controller resets. Use Value: Prevents unintended peripheral deactivation or glitching during boot; leverages Ioff to avoid leakage when main VCC is off. | Use Scenario: Driving multiple status LEDs directly from a low-current FPGA I/O bank without external transistors. IC Role / Device Role / Timing Role: High-drive buffer supplying up to 24mA per channel to illuminate LEDs with consistent brightness. Use Value: Reduces BOM count by replacing discrete drivers; tolerates 5.5V LED anode supplies while operating from 3.3V logic rail. |
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 |
|---|---|---|---|
| SN74LVC244ADWRE4 | Two groups of four buffers with independent OE controls (vs. single group of eight with dual shared OE); identical VCC range, speed, and drive strength. | Better suited for split-bus architectures requiring independent enable control per quartet; less optimal for unified 8-bit bus gating. | Select SN74LVC244ADWRE4 only when separate enable control per four-channel block is required; otherwise SN74LVC541ADWRE4 offers simpler control logic. |
| 74LVC541APWRE4 | Same functionality and specs but in 20-pin TSSOP (PW) package (6.5mm × 6.4mm), offering 40% smaller footprint and lower RθJA (120.3°C/W vs. 114.8°C/W). | Preferred for space-constrained designs or higher thermal efficiency; requires different PCB layout and reflow profile due to finer pitch. | Choose 74LVC541APWRE4 for compact, thermally demanding layouts; retain SN74LVC541ADWRE4 for legacy SOIC compatibility and mechanical robustness. |
Compared with SN74LVC244ADWRE4, SN74LVC541ADWRE4 simplifies enable logic for full-bus control; versus 74LVC541APWRE4, it trades board area for easier assembly and higher mechanical reliability in vibration-prone environments.
Availability
SN74LVC541ADWRE4 is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and embedded computing applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for SN74LVC541ADWRE4 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 high-reliability interface ICs.
The SN74LVC541A product line delivers robust, low-voltage octal buffers optimized for signal integrity, mixed-voltage interoperability, and industrial-grade reliability in bus interface and redrive applications.
FAQ
What is the maximum propagation delay of SN74LVC541ADWRE4 at 3.3V?
The maximum propagation delay (tpd) of SN74LVC541ADWRE4 is 5.1ns at VCC = 3.3V and TA = 25°C, as specified in the switching characteristics table for the –40°C to 85°C temperature range. This value increases to 5.6ns at –40°C to 125°C, ensuring predictable timing margins across full industrial operating conditions. SN74LVC541ADWRE4 maintains this performance without derating under typical load conditions (≤50pF).
Does SN74LVC541ADWRE4 support 5V input signals while powered from 3.3V?
Yes, SN74LVC541ADWRE4 supports input voltages up to 5.5V regardless of VCC level (1.65V–3.6V), enabling direct connection to 5V logic or peripherals without external level-shifting components. This mixed-mode operation is explicitly validated in the Recommended Operating Conditions table and supported by internal clamp diode structure. SN74LVC541ADWRE4 maintains full DC and AC specifications under this condition.
How does the dual-output-enable logic work on SN74LVC541ADWRE4?
SN74LVC541ADWRE4 requires both OE1 and OE2 pins to be driven low simultaneously to enable all eight outputs; if either enable is high, all Y1–Y8 outputs enter high-impedance state. This AND-gated enable logic provides fail-safe bus isolation and reduces risk of contention during power sequencing or fault conditions. SN74LVC541ADWRE4 does not support independent channel control - all buffers share the same enable state.
What thermal considerations apply to SN74LVC541ADWRE4 in SOIC-20 package?
SN74LVC541ADWRE4 in DW (SOIC-20) package has a junction-to-ambient thermal resistance (RθJA) of 114.8°C/W. At maximum continuous output current (±24mA per channel) and worst-case ambient temperature (+125°C), junction temperature remains within safe limits (<150°C) with proper PCB copper area and airflow. SN74LVC541ADWRE4 benefits from a dedicated ground plane and local 0.1μF bypass capacitor to minimize dynamic heating from switching transients.
Can SN74LVC541ADWRE4 be used in hot-swap applications?
Yes, SN74LVC541ADWRE4 supports live insertion via its Ioff feature, which disables all outputs and limits leakage to ±10μA when VCC = 0V - preventing back-drive current into powered subsystems. This allows safe insertion/removal of daughterboards or expansion modules while the main system remains operational. SN74LVC541ADWRE4 is qualified for such use per JESD78 latch-up testing and HBM/CDM ESD ratings.
SN74LVC541ADWRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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-SOIC
SN74LVC541ADWRE4 FAQ
1.How can I place an order for SN74LVC541ADWRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC541ADWRE4 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 SN74LVC541ADWRE4 reliable?
The price and inventory of SN74LVC541ADWRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC541ADWRE4 is usually 5 days.
3.What payment methods are accepted for SN74LVC541ADWRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC541ADWRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC541ADWRE4?
SN74LVC541ADWRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC541ADWRE4 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 SN74LVC541ADWRE4?
For technical support, including SN74LVC541ADWRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC541ADWRE4 requirements.
6.How does Aetrix verify that SN74LVC541ADWRE4 is sourced from the original manufacturer or authorized distributors?
All SN74LVC541ADWRE4 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 SN74LVC541ADWRE4 meets industry standards.
7.What is the process for return or replacement of SN74LVC541ADWRE4?
All SN74LVC541ADWRE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC541ADWRE4, 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 SN74LVC541ADWRE4 part is unused and in its original packaging.
Return procedure for SN74LVC541ADWRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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