My Inquiry
My Account
Texas Instruments SN74LVTH541NS
- Part No.:
- SN74LVTH541NS
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
SN74LVTH541NS.pdf
- Description:
- IC BUFF/DVR 3-ST OCTAL 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:6,325
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74LVTH541NS from Texas Instruments is an octal buffer/driver IC designed for 3.3-V VCC operation with mixed-mode 5-V input/output tolerance, supporting bus line driving and memory address buffering in industrial and embedded systems. It features dual active-low 3-state enable inputs (OE1/OE2), bus-hold on all eight data inputs, and Ioff protection for hot insertion.
For engineers reviewing the SN74LVTH541NS datasheet, SN74LVTH541NS pinout, SN74LVTH541NS application, or SN74LVTH541NS equivalent, this page delivers verified electrical specs, thermal performance (θJA = 60°C/W), switching timing (tPLH/tPHL ≤ 3.9 ns at 3.3 V), bus-hold current (±500 µA), and absolute maximum ratings including 7-V input tolerance and −0.5 V to 4.6 V VCC range.
Technical Context
The SN74LVTH541NS implements a noninverting octal buffer architecture with dual 2-input AND-gated 3-state control (OE1 and OE2 active-low), ensuring outputs enter high-impedance state if either enable is high. Its bus-hold circuitry actively maintains valid logic levels on undriven inputs without external resistors.
Designed for mixed-voltage system interfacing, it accepts 5-V TTL-level inputs while operating from a 2.7–3.6-V supply, delivering 3.3-V compatible outputs with 64-mA sink capability per channel and <0.8-V output ground bounce (VOLP) at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - supports unregulated battery operation down to 2.7 V with stable logic functionality. |
| IOL (per output) | 64 mA - enables direct drive of heavy capacitive loads or multiple TTL inputs without external buffers. |
| tPLH/tPHL | ≤3.9 ns at VCC = 3.3 V - ensures fast signal propagation for high-speed address/data bus applications. |
| Bus-Hold Current | ±500 µA - eliminates need for external pullup/pulldown resistors on unused inputs, reducing BOM count and layout area. |
| θJA | 60°C/W - defines thermal resistance for SOP-20 (NS) package, critical for power dissipation planning in compact PCB layouts. |
| Ioff | ±100 µA at VCC = 0 - prevents damaging backflow current during hot insertion or partial power-down sequences. |
| VI Max | 7 V - allows safe interfacing with 5-V systems without level shifters or clamping diodes. |
Pinout & Package
SOP-20 (NS) package: 12.8 mm × 7.5 mm body, 1.27 mm lead pitch, 2.65 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; tolerate 5-V signals while powered from 3.3-V VCC. |
| 9 | GND | Ground reference for all internal circuitry and output drivers. |
| 10 | VCC | 3.3-V supply input; supports operation down to 2.7 V with full specification compliance. |
| 11, 19 | OE1, OE2 | Active-low 3-state enable inputs; outputs go high-Z if either is high (AND logic). |
| 12, 13, 14, 15, 16, 17, 18, 20 | Outputs (Y1–Y8) | Noninverting buffered outputs; each sinks up to 64 mA or sources up to 32 mA at VCC = 3.3 V. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode signal operation | 5-V tolerant inputs/outputs with 3.3-V VCC - enables seamless interface between legacy 5-V logic and modern low-voltage subsystems. |
| Bus-hold circuitry | Active hold on all A1–A8 inputs - removes requirement for external biasing resistors, simplifying design and improving noise immunity on floating lines. |
| Ioff and power-up 3-state | Prevents current backflow during hot insertion and forces high-Z state during power ramp - eliminates bus contention at startup/shutdown. |
| Output ground bounce (VOLP) | <0.8 V at VCC = 3.3 V, TA = 25°C - reduces switching noise coupling into sensitive analog or RF sections on shared PCBs. |
| Latch-up immunity | >500 mA per JESD 17 - ensures robustness against transient-induced latch-up in noisy industrial environments. |
Applications
| Industrial PLC Backplane Interface | Embedded Memory Address Buffering |
|---|---|
|
Use Scenario: Interfacing 5-V I/O modules to a 3.3-V microcontroller-based PLC CPU board with shared backplane bus. IC Role / Device Role / Timing Role: Octal noninverting buffer providing level translation and drive strength enhancement for address/data lines. Use Value: Eliminates discrete level shifters and pull-up networks while maintaining TTL-compatible timing margins (tPLH ≤ 3.9 ns) across temperature. |
Use Scenario: Driving 32-bit memory address bus from a low-power ARM Cortex-M4 MCU operating at 3.3 V. IC Role / Device Role / Timing Role: Address register buffer with bus-hold on unused address bits during partial decode cycles. Use Value: Prevents floating address lines from inducing spurious memory accesses; reduces layout complexity by removing 8 external 10-kΩ pullups. |
| Hot-Swappable Module Carrier | Legacy System Bus Extender |
|
Use Scenario: Supporting live insertion of field-replaceable I/O cards into a 3.3-V carrier board with precharged backplane. IC Role / Device Role / Timing Role: Isolation buffer with Ioff and power-up 3-state enabling safe card mating/unmating. Use Value: Blocks backfeed current during insertion and holds outputs high-Z until VCC stabilizes above 1.5 V - meets MIL-STD-1399 Class 200 requirements. |
Use Scenario: Extending a vintage 5-V ISA bus to support new 3.3-V peripheral cards via passive adapter. IC Role / Device Role / Timing Role: Bidirectional voltage-tolerant buffer placed between ISA slot edge connector and daughterboard interface. Use Value: Accepts 5-V ISA address/data strobes while sourcing clean 3.3-V logic levels to peripherals, with 7-V input rating preventing damage from bus overshoot. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC541APW | Lower drive (24 mA sink), no bus-hold, 1.65–3.6 V VCC, TSSOP-20 package only. | Requires external pullups for unused inputs; unsuitable for hot-swap or 5-V-tolerant designs. | Select when cost sensitivity outweighs mixed-voltage interface needs and board space permits added passives. |
| 74ALVT16244DGGR | 16-bit, dual 4-bit enable, higher speed (tPD = 2.8 ns), 2.3–3.6 V VCC, no 5-V input tolerance. | Cannot interface directly with 5-V systems; requires external level translation for legacy bus integration. | Choose for high-density 16-bit buffering where 5-V compatibility is unnecessary and timing budget is tighter. |
Compared with SN74LVC541APW and 74ALVT16244DGGR, the SN74LVTH541NS uniquely combines 5-V input tolerance, integrated bus-hold, and Ioff-enabled hot insertion in a standard SOP-20 footprint - making it irreplaceable for mixed-voltage industrial backplanes requiring zero-BOM buffering.
Availability
SN74LVTH541NS is available at Aetrix Electronics and suitable for industrial PLC backplane interfaces, embedded memory address buffering, hot-swappable module carriers, and legacy system bus extenders requiring stable component supply across extended temperature ranges (−40°C to 85°C).
Supply support for SN74LVTH541NS 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 industrial, automotive, and communications markets.
The SN74LVTH541NS belongs to TI's LVTH logic family, engineered specifically for mixed-voltage system interfacing-enabling reliable 3.3-V core logic to communicate with legacy 5-V peripherals without external level-shifting components.
FAQ
What is the maximum input voltage rating for SN74LVTH541NS?
The SN74LVTH541NS supports an absolute maximum input voltage (VI) of 7 V, allowing safe connection to 5-V TTL buses without external clamping. This rating is explicitly confirmed in the Absolute Maximum Ratings table of the SCBS682G datasheet, and applies across all input pins (A1–A8, OE1, OE2) regardless of VCC state. Operation within recommended conditions maintains this margin under transient conditions.
Does SN74LVTH541NS require external pullup resistors on its inputs?
No, the SN74LVTH541NS does not require external pullup or pulldown resistors on its A1–A8 inputs due to integrated bus-hold circuitry, which actively maintains valid logic states on undriven inputs. The datasheet explicitly states that use of external resistors with bus-hold is not recommended, as they may interfere with the ±500 µA dynamic hold current and degrade noise immunity.
Can SN74LVTH541NS be used in hot-insertion applications?
Yes, the SN74LVTH541NS is fully specified for hot-insertion applications via two key features: Ioff circuitry disables outputs and blocks backflow current when VCC = 0, and power-up 3-state forces outputs into high-impedance during VCC ramp (0–1.5 V). These are validated per JEDEC standards and documented in the "description/ordering information" section of SCBS682G.
What is the thermal resistance (θJA) of SN74LVTH541NS in its SOP-20 package?
The SN74LVTH541NS in the SOP-20 (NS) package has a junction-to-ambient thermal resistance (θJA) of 60°C/W, as specified in the Absolute Maximum Ratings table of the SCBS682G datasheet. This value assumes standard JEDEC 2-layer board conditions and is critical for calculating maximum allowable power dissipation (PD = (TJMAX − TA)/θJA) in industrial ambient environments.
How does the dual-enable (OE1/OE2) logic work on SN74LVTH541NS?
The SN74LVTH541NS uses a 2-input AND gate for 3-state control: 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 is confirmed in the FUNCTION TABLE and logic diagram of SCBS682G, enabling flexible enable sequencing-for example, OE1 controlled by system reset and OE2 by local peripheral select.
SN74LVTH541NS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
SN74LVTH541NS FAQ
1.How can I place an order for SN74LVTH541NS through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVTH541NS 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 SN74LVTH541NS reliable?
The price and inventory of SN74LVTH541NS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTH541NS is usually 5 days.
3.What payment methods are accepted for SN74LVTH541NS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVTH541NS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVTH541NS?
SN74LVTH541NS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVTH541NS 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 SN74LVTH541NS?
For technical support, including SN74LVTH541NS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTH541NS requirements.
6.How does Aetrix verify that SN74LVTH541NS is sourced from the original manufacturer or authorized distributors?
All SN74LVTH541NS 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 SN74LVTH541NS meets industry standards.
7.What is the process for return or replacement of SN74LVTH541NS?
All SN74LVTH541NS units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTH541NS, 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 SN74LVTH541NS part is unused and in its original packaging.
Return procedure for SN74LVTH541NS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74LVTH541NS Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
