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Texas Instruments SN74LV541ATRGYR
- Part No.:
- SN74LV541ATRGYR
- Manufacturer:
- Texas Instruments
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
SN74LV541ATRGYR.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,412
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Product details
Overview
SN74LV541ATRGYR from Texas Instruments is an octal noninverting buffer/driver with 3-state outputs, designed for 4.5-V to 5.5-V VCC operation. It features TTL-voltage-compatible inputs, typical propagation delay of 4 ns at 5 V, and supports mixed-mode voltage translation (e.g., 3.3-V to 5-V). Used in memory address register buffering and bus line driving applications.
For engineers reviewing the SN74LV541ATRGYR datasheet, SN74LV541ATRGYR pinout, SN74LV541ATRGYR application, or SN74LV541ATRGYR equivalent, key selection considerations include 3-state enable logic (dual active-low OE), Ioff partial-power-down support, output ground bounce & undershoot specs, and VQFN-20 thermal pad layout requirements.
Technical Context
The SN74LV541ATRGYR implements dual independent 3-state control via OE1 and OE2 - each a two-input AND gate with active-low inputs - enabling per-group output disable. All eight channels are noninverting, with inputs and outputs placed on opposite package edges to simplify PCB routing.
It incorporates Ioff circuitry to prevent backflow current during partial power-down, meets JESD 17 latch-up >250 mA, and provides ESD protection exceeding 2000-V HBM. Input thresholds are TTL-compatible (VIH = 2 V, VIL = 0.8 V) across –40°C to 85°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - ensures compatibility with standard 5-V logic rails and tolerance to supply ripple. |
| tpd (Typical) | 4 ns at 5 V - enables high-speed address/data buffering in microcontroller and FPGA peripheral interfaces. |
| Ioff Support | Yes - disables outputs and blocks current flow when powered down, critical for hot-swap and multi-rail systems. |
| VOH / VOL | VOH ≥ 3.8 V, VOL ≤ 0.55 V at 16 mA - guarantees robust logic-level margins under full load. |
| Input Compatibility | TTL-voltage - allows direct interfacing with legacy 5-V bipolar logic and mixed-voltage 3.3-V/5-V systems. |
| Operating Temp | –40°C to +85°C - qualified for industrial temperature environments without derating. |
| Package | VQFN-20 (RGY), 3.5 mm × 4.5 mm, 0.5-mm pitch, exposed thermal pad - optimized for space-constrained, thermally demanding layouts. |
Pinout & Package
VQFN-20 (RGY) package with 3.5 mm × 4.5 mm footprint, 0.5-mm lead pitch, and exposed thermal pad (Pin 21) requiring PCB solder connection for thermal and mechanical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | A1–A8 Inputs | Noninverting data inputs; TTL-compatible thresholds allow direct connection to 3.3-V or 5-V sources. |
| 9 | GND | Ground reference for all internal circuitry and output drivers. |
| 10 | VCC | Positive supply rail (4.5–5.5 V); decoupling capacitor required near this pin. |
| 11, 19 | OE1, OE2 | Active-low 3-state enable controls; either high forces corresponding Y outputs into high-Z state. |
| 12–18, 20 | Y1–Y8 Outputs | Noninverting buffered outputs; capable of ±16 mA drive and support bus-hold or termination. |
| 21 | Thermal Pad | Exposed copper pad - must be soldered to PCB ground plane for thermal dissipation and mechanical stability. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 3-state control (OE1/OE2) | Enables independent disabling of two groups of four outputs - simplifies bus arbitration in multi-master systems. |
| Ioff partial-power-down | Prevents damaging current backflow when VCC = 0 V, supporting safe insertion/removal in live-backplane designs. |
| TTL-compatible inputs | Accepts 3.3-V or 5-V logic levels without level shifters - reduces BOM count in mixed-voltage memory interfaces. |
| Low ground bounce (VOLP < 0.8 V) | Minimizes switching noise coupling into shared GND planes - improves signal integrity in dense digital layouts. |
| VQFN thermal pad | Enables efficient heat transfer to PCB; θJA = 37°C/W - supports sustained 16-mA output loading without thermal throttling. |
Applications
| Memory Address Buffering | Microcontroller Peripheral Bus Interface |
|---|---|
Use Scenario: Driving 8-bit address lines from an MCU to external SRAM or EPROM. IC Role / Device Role / Timing Role: Noninverting buffer with 3-state control isolates address bus during DMA cycles or flash programming. Use Value: 4-ns tpd ensures setup/hold timing compliance at 25-MHz bus speeds; Ioff prevents leakage during MCU sleep modes. |
Use Scenario: Interfacing a 3.3-V ARM Cortex-M controller to legacy 5-V peripherals (e.g., LCD controllers, DACs). IC Role / Device Role / Timing Role: Voltage-translating buffer enabling bidirectional signal integrity without external level shifters. Use Value: TTL-compatible inputs accept 3.3-V logic highs reliably; VOH ≥ 3.8 V drives 5-V inputs with margin. |
| Industrial PLC I/O Expansion | Test Equipment Signal Conditioning |
Use Scenario: Isolating and amplifying digital control signals in modular I/O racks with hot-swap capability. IC Role / Device Role / Timing Role: Bus driver with independent OE control per channel group supports dynamic module reconfiguration. Use Value: Ioff and –40°C to +85°C rating ensure reliable operation during field power cycling and ambient extremes. |
Use Scenario: Conditioning parallel trigger or status signals between test instruments and DUTs with varying logic families. IC Role / Device Role / Timing Role: Clean, low-noise buffer mitigates ground bounce and undershoot in high-repetition automated test setups. Use Value: VOLP < 0.8 V and VOHV > 2.3 V suppress false triggering caused by transient noise on shared grounds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer/3-state driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC541APWR | Operates at 1.65–3.6 V only; no 5-V tolerance; lower drive (±24 mA); same VQFN-20 footprint. | Suitable for 3.3-V-only systems; not usable in 5-V buses or mixed-voltage translation. | Select when system uses only 3.3-V logic and requires lower static current (ICC = 10 μA typical). |
| 74LVX541MTR | 3.3-V only (3.0–3.6 V); higher tpd (7.5 ns typ); SOIC-20 package; no Ioff support. | Limited to single-supply 3.3-V designs; lacks partial-power-down safety for hot-plug use cases. | Choose for cost-sensitive, non-hot-swap consumer applications where thermal performance is less critical. |
Compared with SN74LV541ATRGYR, SN74LVC541APWR offers lower voltage operation but sacrifices 5-V compatibility and mixed-mode translation, while 74LVX541MTR trades off Ioff, speed, and package thermal efficiency for legacy SOIC availability.
Availability
SN74LV541ATRGYR is available at Aetrix Electronics and suitable for memory interface design, industrial control bus expansion, and mixed-voltage signal conditioning requiring stable component supply and long-term industrial-grade availability.
Supply support for SN74LV541ATRGYR 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 over 50 years of innovation in high-reliability interface and power management ICs.
The SN74LV541ATRGYR belongs to TI's LV family of low-voltage, TTL-compatible logic devices - engineered specifically for robust 5-V bus driving, mixed-signal voltage translation, and industrial-grade thermal reliability.
FAQ
What is the recommended power supply decoupling for SN74LV541ATRGYR?
Place a 0.1-μF ceramic capacitor between VCC (Pin 10) and GND (Pin 9), located within 3 mm of the package. For systems with heavy simultaneous switching, add a 4.7-μF bulk capacitor nearby. The exposed thermal pad (Pin 21) must be soldered to a solid PCB ground plane to serve as both thermal path and low-inductance GND return - essential for minimizing ground bounce in the SN74LV541ATRGYR.
Does SN74LV541ATRGYR support true 5-V tolerant inputs?
Yes. The SN74LV541ATRGYR inputs are TTL-voltage compatible and rated for VI up to 5.5 V, allowing direct connection to 5-V logic sources without clamping diodes or external resistors. This is confirmed in the Absolute Maximum Ratings table (VI range: –0.5 V to 7 V) and Recommended Operating Conditions (VI = 0 to 5.5 V), making the SN74LV541ATRGYR suitable for interfacing with legacy 5-V systems.
How does the dual OE structure (OE1/OE2) function in SN74LV541ATRGYR?
The SN74LV541ATRGYR uses two independent active-low 3-state enables: OE1 controls Y1–Y4, and OE2 controls Y5–Y8. Each OE input feeds a two-input AND gate, so either OE being high forces its associated outputs into high-impedance. This allows selective bus partitioning - for example, disabling upper/lower nibbles independently during memory bank switching - a feature explicitly documented in the Function Table and Logic Diagram of the SN74LV541ATRGYR datasheet.
Can SN74LV541ATRGYR be used in hot-swap applications?
Yes. The SN74LV541ATRGYR includes Ioff circuitry that disables outputs and blocks current backflow when VCC = 0 V, satisfying JESD 78 requirements for partial-power-down operation. This protects upstream drivers during live insertion/removal - verified by Ioff ≤ 5 μA at 0 V VCC and VI/VO = 0–5.5 V, as specified in the Electrical Characteristics table for the SN74LV541ATRGYR.
What is the thermal pad soldering requirement for SN74LV541ATRGYR?
The exposed thermal pad (Pin 21) of the SN74LV541ATRGYR must be soldered to a PCB copper area connected to GND. TI recommends 78% solder paste coverage (per SLUA271), using a 14-pad stencil pattern with 0.125-mm thickness. Failure to solder the pad degrades θJA from 37°C/W to >60°C/W and risks mechanical delamination - both validated in the RGY package outline and board layout guidelines for SN74LV541ATRGYR.
SN74LV541ATRGYR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LV
- 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:
- 16mA, 16mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-VQFN (3.5x4.5)
SN74LV541ATRGYR FAQ
1.How can I place an order for SN74LV541ATRGYR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LV541ATRGYR 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 SN74LV541ATRGYR reliable?
The price and inventory of SN74LV541ATRGYR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LV541ATRGYR is usually 5 days.
3.What payment methods are accepted for SN74LV541ATRGYR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LV541ATRGYR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LV541ATRGYR?
SN74LV541ATRGYR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LV541ATRGYR 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 SN74LV541ATRGYR?
For technical support, including SN74LV541ATRGYR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LV541ATRGYR requirements.
6.How does Aetrix verify that SN74LV541ATRGYR is sourced from the original manufacturer or authorized distributors?
All SN74LV541ATRGYR 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 SN74LV541ATRGYR meets industry standards.
7.What is the process for return or replacement of SN74LV541ATRGYR?
All SN74LV541ATRGYR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LV541ATRGYR, 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 SN74LV541ATRGYR part is unused and in its original packaging.
Return procedure for SN74LV541ATRGYR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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