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Texas Instruments SN74LVC541ARGYR
- Part No.:
- SN74LVC541ARGYR
- Manufacturer:
- Texas Instruments
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
SN74LVC541ARGYR.pdf
- Description:
- IC BUF NON-INVERT 3.6V 20VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:11,037
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Product details
Overview
SN74LVC541ARGYR 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-used in industrial control backplanes and FPGA I/O expansion.
For engineers reviewing the SN74LVC541ARGYR datasheet, SN74LVC541ARGYR pinout, SN74LVC541ARGYR application, or SN74LVC541ARGYR equivalent, key selection criteria include 3-state timing behavior, mixed-voltage signal compatibility (5V input into 3.3V VCC), thermal performance in RGY package, and dual-OE logic coordination for synchronized channel control.
Technical Context
The SN74LVC541ARGYR implements eight independent CMOS buffer channels sharing two active-low output enable inputs (OE1 and OE2), requiring both to be low for any output to drive. Its balanced push-pull outputs deliver ±24mA at 3V while maintaining VOL ≤ 0.55V and VOH ≥ 2.2V under load.
It supports partial-power-down via Ioff circuitry that limits leakage to ±10μA when VCC = 0V, and accepts 0–5.5V input signals regardless of VCC level-enabling interoperability between 5V legacy peripherals and 3.3V logic domains without level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 3.6V - Enables direct integration into modern low-voltage microcontroller and FPGA I/O rails. |
| Input Voltage Tolerance | 0V to 5.5V - Allows safe connection to 5V TTL/CMOS sources without external clamping or translation. |
| tpd (Max) | 5.1ns at VCC = 3.3V - Supports >100MHz signal redriving on short PCB traces or controlled-impedance lines. |
| Ioff Leakage | ±10μA at VCC = 0V - Permits hot-plug operation and prevents back-drive damage during partial power-down. |
| Output Drive | ±24mA at VCC = 3V - Sustains robust signal integrity driving 50pF loads or multiple CMOS inputs simultaneously. |
| ESD Rating (HBM) | ±2000V - Meets industrial-grade handling requirements without additional protection circuitry. |
| Operating Temp | –40°C to +125°C - Qualified for automotive under-hood and industrial motor-control environments. |
Pinout & Package
SN74LVC541ARGYR uses a 20-pin VQFN package (RGY) with 4.5mm × 3.5mm body size, exposed thermal pad (optional GND connection), and 0.5mm pitch. Pin 1 is OE1; pins 2–9 are inputs A1–A8; pins 11–18 are outputs Y1–Y8; pin 10 is GND; pin 19 is OE2; pin 20 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OE1, OE2 | Active-low output enable (dual-input AND logic) | Both must be low to activate outputs; enables synchronized gating of all eight channels. |
| A1–A8 | Buffer input terminals | High-impedance CMOS inputs accepting 0–5.5V; require termination to VCC/GND if unused. |
| Y1–Y8 | 3-state buffered outputs | Drive high/low or enter high-Z; tolerate 0–5.5V when disabled-safe for shared-bus contention. |
| VCC | Positive supply | Supplies all internal logic and output drivers; requires local 0.1μF bypass capacitor. |
| GND | Ground reference | Return path for all currents; connects to thermal pad for improved thermal dissipation. |
| Thermal Pad | Exposed copper pad (center-bottom) | May be connected to GND plane for enhanced thermal performance; not electrically required. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode signal operation | 5V-tolerant inputs operate reliably with 3.3V VCC-eliminates need for discrete level translators in hybrid voltage systems. |
| Low ground bounce (VOLP) | <0.8V typical at VCC = 3.3V - Reduces noise coupling into adjacent digital or analog circuits during switching. |
| Controlled undershoot (VOHV) | >2V typical at VCC = 3.3V - Limits negative voltage excursions that could trigger false logic transitions in receivers. |
| Live insertion support | Ioff functionality ensures <±10μA leakage when VCC = 0V - enables safe board replacement in powered-backplane systems. |
| Latch-up immunity | Exceeds 100mA per JESD78 - Guarantees robustness against transient-induced latch-up in noisy industrial environments. |
Applications
| Industrial Backplane Interface | FPGA I/O Expansion |
|---|---|
Use Scenario: Interfacing a 3.3V FPGA to legacy 5V peripheral modules across a 12cm PCB trace. IC Role / Device Role / Timing Role: Signal redriver with 3-state control to isolate FPGA during configuration and prevent bus contention. Use Value: Eliminates external level shifters by accepting 5V inputs at 3.3V VCC while delivering clean, fast edges into 50pF loads. |
Use Scenario: Extending limited FPGA GPIO count to drive multiple LED indicators and status lines. IC Role / Device Role / Timing Role: Non-inverting buffer with synchronized 3-state enable for grouped LED control and power sequencing. Use Value: Provides ±24mA per channel to directly drive LEDs without current-limiting resistors, reducing BOM count and layout area. |
| Automotive Sensor Hub | Test Equipment Signal Conditioning |
Use Scenario: Aggregating and buffering analog-to-digital converter (ADC) control signals in an engine control unit operating at –40°C to +125°C. IC Role / Device Role / Timing Role: Timing-critical signal conditioner enabling precise sampling window alignment across eight sensor channels. Use Value: Delivers 5.1ns max tpd and guaranteed operation over full automotive temperature range without derating. |
Use Scenario: Isolating and redriving digital stimulus signals from a pattern generator to DUT inputs with variable load capacitance. IC Role / Device Role / Timing Role: Reconfigurable bus driver supporting both enabled and high-Z states for flexible test fixture routing. Use Value: Dual OE pins allow software-controlled channel grouping; 5.5V-tolerant inputs accept TTL/CMOS/LVCMOS sources without adaptation. |
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 |
|---|---|---|---|
| SN74LVC244ARGYR | Two groups of four buffers with independent OE controls (vs. single group of eight with dual-OE AND logic) | Enables asymmetric channel enablement; less suitable for fully synchronized 8-channel gating | Choose when independent control of two 4-channel subsets is required. |
| 74LVC541APWRE4 | TSSOP-20 (PW) package instead of VQFN-20 (RGY); 6.5mm × 6.4mm vs. 4.5mm × 3.5mm footprint | Lower thermal resistance (RθJA = 120.3°C/W vs. 82.8°C/W) but larger PCB area and no thermal pad | Choose for manual assembly or legacy TSSOP-compatible layouts where thermal density is secondary. |
Compared with SN74LVC541ARGYR, SN74LVC244ARGYR offers finer-grained enable control at the cost of reduced channel synchronization, while 74LVC541APWRE4 trades compact thermal performance for easier soldering and legacy footprint compatibility-neither is pin-compatible due to differing OE architecture or package geometry.
Availability
SN74LVC541ARGYR is available at Aetrix Electronics and suitable for industrial backplane interfaces, FPGA I/O expansion, automotive sensor hubs, and test equipment signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVC541ARGYR 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 experience in high-reliability industrial and automotive IC design.
SN74LVC541ARGYR belongs to the LVC (Low-Voltage CMOS) logic family, engineered for low-power, high-speed interfacing between mixed-voltage systems in space-constrained, thermally demanding applications.
FAQ
What is the function of the dual output enable pins (OE1 and OE2) on the SN74LVC541ARGYR?
The SN74LVC541ARGYR requires both OE1 and OE2 to be logic low for its eight outputs to drive; this AND-gated enable logic ensures synchronized activation or high-impedance isolation of all channels. Neither pin alone can enable outputs-both must be asserted, providing fail-safe control against partial enable conditions that could cause bus contention.
Can the SN74LVC541ARGYR safely interface a 5V microcontroller output to a 3.3V FPGA input?
Yes-the SN74LVC541ARGYR accepts input voltages up to 5.5V regardless of VCC level, so a 5V MCU output drives the A1–A8 pins directly while VCC = 3.3V. Its outputs then swing rail-to-rail (0V to 3.3V), delivering compatible logic levels to the FPGA without external components or level-shifting circuitry.
Does the SN74LVC541ARGYR support hot-swap or live-insertion applications?
Yes-the SN74LVC541ARGYR incorporates Ioff circuitry that limits input/output leakage to ±10μA when VCC = 0V, preventing back-drive current flow and protecting powered system components during board insertion or removal. This makes it suitable for modular backplane and telecom line-card designs.
What is the maximum capacitive load the SN74LVC541ARGYR can drive while maintaining specified timing?
The SN74LVC541ARGYR is characterized for loads ≤50pF in its switching specifications. Driving larger capacitances increases propagation delay and may degrade edge rates or cause ringing; for >50pF loads, add series damping resistors or use lower-capacitance routing-verified in TI's Application Report SCBA197.
How should the thermal pad on the SN74LVC541ARGYR (RGY package) be handled in PCB layout?
The exposed thermal pad on the SN74LVC541ARGYR may be left floating or connected to GND-TI recommends GND connection via multiple vias to an inner-layer ground plane to improve thermal dissipation. Do not connect it to VCC or signal nets; solder mask opening must fully expose the pad for reliable reflow attachment.
SN74LVC541ARGYR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 20-VFQFN Exposed Pad
- 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-VQFN (3.5x4.5)
SN74LVC541ARGYR FAQ
1.How can I place an order for SN74LVC541ARGYR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC541ARGYR 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 SN74LVC541ARGYR reliable?
The price and inventory of SN74LVC541ARGYR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC541ARGYR is usually 5 days.
3.What payment methods are accepted for SN74LVC541ARGYR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC541ARGYR transactions.
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4.How is shipping managed for SN74LVC541ARGYR?
SN74LVC541ARGYR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC541ARGYR 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 SN74LVC541ARGYR?
For technical support, including SN74LVC541ARGYR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC541ARGYR requirements.
6.How does Aetrix verify that SN74LVC541ARGYR is sourced from the original manufacturer or authorized distributors?
All SN74LVC541ARGYR 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 SN74LVC541ARGYR meets industry standards.
7.What is the process for return or replacement of SN74LVC541ARGYR?
All SN74LVC541ARGYR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC541ARGYR, 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 SN74LVC541ARGYR part is unused and in its original packaging.
Return procedure for SN74LVC541ARGYR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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