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Texas Instruments SN74LV541ATDW
- Part No.:
- SN74LV541ATDW
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74LV541ATDW.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:736
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Product details
Overview
SN74LV541ATDW from Texas Instruments is an octal noninverting 3-state buffer/driver IC designed for 4.5-V to 5.5-V VCC operation, TTL-voltage-compatible inputs, typical propagation delay of 4 ns at 5 V, and Ioff support for partial-power-down mode. It drives bus lines or memory address registers in industrial control and embedded system interfaces.
For engineers reviewing the SN74LV541ATDW datasheet, SN74LV541ATDW pinout, SN74LV541ATDW application, or SN74LV541ATDW equivalent, key selection considerations include its dual active-low output-enable (OE1/OE2) architecture, 16-mA output drive capability, 5.5-V absolute maximum input voltage rating, and SOIC-20 package compatibility with legacy 5-V logic systems.
Technical Context
The SN74LV541ATDW implements eight independent noninverting buffers, each with a two-input AND gate control structure where OE1 and OE2 are active-low enables - either high disables all corresponding outputs into high-impedance state. Its inputs accept TTL-level signals (VIH = 2 V, VIL = 0.8 V), enabling interoperability with bipolar logic and 3.3-V devices while translating to 5-V outputs.
Designed for mixed-mode voltage operation, it features Ioff circuitry that disables outputs during power-down to prevent backflow current, and meets JESD 17 latch-up immunity (>250 mA). Output ground bounce (VOLP < 0.8 V) and VOH undershoot (VOHV > 2.3 V) are specified at VCC = 5 V and TA = 25°C for signal integrity in dense PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - ensures stable operation across standard 5-V supply tolerances and brown-out resilience. |
| Propagation Delay (tpd) | Typical 4 ns at 5 V - enables high-speed bus buffering in timing-critical address/data paths. |
| Output Drive (IOL/IOH) | ±16 mA - sufficient to drive multiple TTL loads or 50-pF transmission lines without external termination. |
| Input Compatibility | TTL-voltage compatible (VIH = 2 V, VIL = 0.8 V) - allows direct interface with legacy 5-V logic and mixed-voltage systems. |
| Ioff Support | Active at VCC = 0 V - prevents damaging current flow during hot-insertion or partial power-down sequences. |
| Operating Temperature | –40°C to 125°C - qualified for industrial and automotive under-hood applications requiring extended thermal range. |
| ESD Protection | 2000-V HBM, 200-V MM, 1000-V CDM - exceeds JEDEC standards for robust handling in manufacturing and field environments. |
Pinout & Package
SN74LV541ATDW is housed in a 20-pin SOIC (DW) package measuring 7.5 mm × 12.8 mm × 2.65 mm (max height), with gull-wing leads, RoHS-compliant NiPdAu finish, and moisture sensitivity level (MSL) 1 (unlimited floor life at ≤30°C/60% RH).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE1, OE2 | Active-low output-enable inputs - either high forces all eight Y outputs into high-impedance state. |
| 2–9 | A1–A8 | Noninverting data inputs - directly connected to upstream logic sources (e.g., microcontroller GPIO or address bus). |
| 11–18 | Y1–Y8 | Buffered noninverting outputs - drive downstream loads such as memory chips, bus transceivers, or peripheral interfaces. |
| 10 | GND | Ground reference - must be low-impedance connection to minimize noise coupling and ground bounce. |
| 20 | VCC | Positive supply - decoupling capacitor (0.1 µF ceramic) required within 10 mm for stable switching performance. |
Key Features
| Feature | Design Value |
|---|---|
| Dual active-low OE control | Enables independent group enable/disable of all eight outputs - simplifies bus arbitration and reduces contention risk. |
| TTL-compatible inputs | Accepts 3.3-V and 5-V logic levels without level shifters - supports mixed-voltage board designs and legacy system upgrades. |
| Low dynamic ground bounce | VOLP < 0.8 V at VCC = 5 V - maintains signal integrity during simultaneous output switching in high-density layouts. |
| Ioff partial-power-down | Blocks current flow when VCC = 0 V - eliminates backfeed damage during hot-swap or multi-rail sequencing. |
| Latch-up immunity | Exceeds 250 mA per JESD 17 - ensures reliability in electrically noisy industrial environments with transient surges. |
Applications
| Industrial PLC Backplane Interface | Microcontroller Address Bus Buffering |
|---|---|
Use Scenario: Isolating and driving 8-bit address lines between a 5-V microcontroller and multiple memory-mapped peripherals on a modular PLC backplane. IC Role / Device Role / Timing Role: Noninverting buffer with 3-state outputs enables time-multiplexed access to shared address space while preventing bus contention. Use Value: 4 ns tpd ensures minimal address setup delay; ±16 mA drive sustains signal integrity across 15-cm PCB traces with up to 50 pF load. |
Use Scenario: Expanding GPIO count by latching and buffering address bits from an MCU to external SRAM or FPGA configuration memory. IC Role / Device Role / Timing Role: Octal driver translates MCU port pins into robust address bus drivers with controlled enable timing via OE1/OE2. Use Value: Dual OE inputs allow synchronized enable/disable with memory chip select, eliminating glitches during read/write transitions. |
| Legacy System Voltage Translation | Test Equipment Signal Conditioning |
Use Scenario: Interfacing a 3.3-V FPGA I/O bank to a 5-V legacy sensor subsystem requiring TTL-level inputs. IC Role / Device Role / Timing Role: Level-shifting buffer leveraging TTL-compatible inputs and 5-V CMOS outputs without external biasing. Use Value: VIH = 2 V and VIL = 0.8 V guarantee reliable recognition of 3.3-V logic highs/lows; Ioff prevents backfeed when FPGA is unpowered. |
Use Scenario: Driving calibrated test signals from a DAQ system into multiple DUT inputs simultaneously during production functional testing. IC Role / Device Role / Timing Role: Parallel output driver with precise 3-state control ensures clean signal assertion and isolation between test phases. Use Value: VOLP < 0.8 V and VOHV > 2.3 V maintain waveform fidelity at 10-MHz toggle rates; 125°C rating supports extended burn-in cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer/driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC541APWR | 3.3-V only VCC range (1.65–3.6 V); lower tpd (3.2 ns typ); no TTL input compatibility. | Requires 3.3-V-only system design; unsuitable for 5-V buses or mixed-voltage translation. | Select when operating exclusively at 3.3 V and lowest possible propagation delay is critical. |
| 74ACT541SCX | 5-V only VCC (4.5–5.5 V); higher drive (±24 mA); faster tpd (3.5 ns typ); no Ioff support. | Lacks partial-power-down protection; not recommended for hot-swap or multi-rail systems. | Choose for legacy 5-V systems demanding maximum speed and drive strength where power sequencing is fixed. |
Compared with SN74LV541ATDW, SN74LVC541APWR offers superior speed in 3.3-V domains but forfeits 5-V interoperability, while 74ACT541SCX delivers higher drive and speed in pure 5-V environments but lacks Ioff - making SN74LV541ATDW uniquely balanced for mixed-voltage, industrial-grade bus interfacing with robust power management.
Availability
SN74LV541ATDW is available at Aetrix Electronics and suitable for industrial PLC backplanes, microcontroller address expansion, legacy voltage translation, and automated test equipment requiring stable component supply and long-term obsolescence mitigation.
Supply support for SN74LV541ATDW 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 90 years of innovation in industrial, automotive, and communications markets.
The SN74LV541ATDW belongs to TI's LV family of low-voltage logic devices engineered for robust 5-V operation with mixed-signal compatibility, targeting industrial control, instrumentation, and legacy system modernization.
FAQ
What is the recommended operating voltage range for the SN74LV541ATDW?
The SN74LV541ATDW is specified for 4.5 V to 5.5 V VCC operation. This range ensures reliable functionality across standard 5-V supply tolerances, including nominal 5.0 V ±5%, and provides margin against brown-out conditions. Operation outside this range may cause undefined behavior or permanent damage, as absolute maximum ratings cap VCC at 7 V.
Does the SN74LV541ATDW support partial-power-down mode, and how is it implemented?
Yes, the SN74LV541ATDW supports partial-power-down mode via its Ioff circuitry. When VCC = 0 V, the Ioff feature disables all outputs to prevent current backflow from powered downstream circuits into the unpowered device. This protects both the SN74LV541ATDW and connected components during hot-swap or multi-rail power sequencing scenarios.
How does the dual output-enable (OE1/OE2) structure function in the SN74LV541ATDW?
The SN74LV541ATDW uses a two-input AND gate per output group: both OE1 and OE2 must be low for outputs Y1–Y8 to be active. If either OE1 or OE2 is high, all outputs enter high-impedance state. This architecture allows flexible bus control - for example, OE1 can serve as global enable while OE2 links to a local chip-select signal for fine-grained arbitration.
Can the SN74LV541ATDW interface directly with 3.3-V logic devices?
Yes, the SN74LV541ATDW accepts 3.3-V logic levels directly due to its TTL-voltage-compatible inputs (VIH = 2 V min, VIL = 0.8 V max). A 3.3-V high signal exceeds the 2-V VIH threshold, and a 3.3-V low remains below the 0.8-V VIL limit. No external level shifter is needed, enabling seamless 3.3-V-to-5-V translation in mixed-voltage systems.
What is the thermal performance of the SN74LV541ATDW in its SOIC-20 (DW) package?
The SN74LV541ATDW in the SOIC-20 (DW) package has a junction-to-ambient thermal resistance (θJA) of 58°C/W. At maximum ambient temperature (125°C) and full DC output loading, proper PCB layout - including adequate copper pour on VCC/GND planes and thermal vias near the package - is essential to keep junction temperature within safe limits (<150°C) and ensure long-term reliability.
SN74LV541ATDW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LV
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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-SOIC
SN74LV541ATDW FAQ
1.How can I place an order for SN74LV541ATDW through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LV541ATDW 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 SN74LV541ATDW reliable?
The price and inventory of SN74LV541ATDW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LV541ATDW is usually 5 days.
3.What payment methods are accepted for SN74LV541ATDW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LV541ATDW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LV541ATDW?
SN74LV541ATDW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LV541ATDW 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 SN74LV541ATDW?
For technical support, including SN74LV541ATDW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LV541ATDW requirements.
6.How does Aetrix verify that SN74LV541ATDW is sourced from the original manufacturer or authorized distributors?
All SN74LV541ATDW 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 SN74LV541ATDW meets industry standards.
7.What is the process for return or replacement of SN74LV541ATDW?
All SN74LV541ATDW units undergo pre-shipment inspection (PSI). If there is an issue with SN74LV541ATDW, 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 SN74LV541ATDW part is unused and in its original packaging.
Return procedure for SN74LV541ATDW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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