My Inquiry
My Account
Texas Instruments SN74LV541ATDWR
- Part No.:
- SN74LV541ATDWR
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74LV541ATDWR.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,295
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74LV541ATDWR 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 → 5 V). It is used in memory address register buffering and bus line driving applications.
For engineers reviewing the SN74LV541ATDWR datasheet, SN74LV541ATDWR pinout, SN74LV541ATDWR application, or SN74LV541ATDWR equivalent, key selection considerations include its dual active-low output-enable control (OE1/OE2), Ioff partial-power-down support, 3-state output isolation, and SOIC-20 package compatibility with industrial temperature range (–40°C to 125°C).
Technical Context
The SN74LV541ATDWR implements eight independent noninverting buffer channels, each with a two-input AND-gated 3-state control using OE1 and OE2 - either high disables all corresponding outputs into high-impedance. Its input structure accepts TTL-level signals (VIH = 2 V, VIL = 0.8 V) while operating from a 4.5–5.5-V supply, enabling interoperability with both legacy bipolar logic and modern 3.3-V systems.
It integrates Ioff circuitry to prevent backflow current during partial power-down, meets JESD 17 latch-up immunity (>250 mA), and exhibits low dynamic noise: typical VOLP < 0.8 V and VOHV > 2.3 V at VCC = 5 V. The device is characterized across –40°C to 125°C and supports CL = 15 pF and 50 pF load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - ensures stable operation across standard 5-V rail tolerances and brown-out resilience. |
| tpd (Typical) | 4 ns at 5 V, CL = 15 pF - enables high-speed address/data buffering in microcontroller and FPGA peripheral interfaces. |
| IOH/IOL | ±16 mA - drives standard TTL loads and multiple CMOS inputs without external amplification. |
| Ioff Current | ≤5 µA at 0–5.5 V - blocks damaging current flow when VCC = 0, supporting hot-swap and multi-rail system sequencing. |
| Input Compatibility | TTL-voltage level (VIH = 2 V, VIL = 0.8 V) - allows direct connection to 74LS/74ALS outputs and 3.3-V logic without level shifters. |
| Operating Temp | –40°C to 125°C - qualified for under-hood automotive, industrial control, and extended-temperature embedded systems. |
| ESD Rating | 2000-V HBM, 200-V MM, 1000-V CDM - exceeds JEDEC standards for robust handling in manufacturing and field environments. |
Pinout & Package
SN74LV541ATDWR is housed in a 20-pin SOIC (DW) package, 7.5 mm × 12.8 mm body, 2.65 mm max height, 1.27 mm lead pitch, RoHS-compliant NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE1, OE2 | Active-low output-enable inputs - dual control allows grouped channel enable/disable; either high forces all Y outputs into high-Z. |
| 2–9 | A1–A8 | Buffer input terminals - accept TTL/CMOS logic signals; internally pulled neither, must be driven or tied. |
| 11, 20 | GND, VCC | Power reference and supply - decoupling capacitor (0.1 µF) required near Pin 20 for noise suppression. |
| 12–19 | Y1–Y8 | Noninverting 3-state outputs - present Ax logic when enabled; high-impedance otherwise, enabling bus sharing. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage translation | Accepts 3.3-V inputs while operating at 5-V VCC - eliminates need for discrete level shifters in hybrid voltage systems. |
| Ioff partial-power-down protection | Disables outputs and blocks reverse current when VCC = 0 - critical for PCIe, USB, and hot-plug subsystems. |
| Low ground bounce (VOLP < 0.8 V) | Minimizes switching noise on shared GND planes - improves signal integrity in dense PCB layouts with multiple drivers. |
| Opposite-side I/O layout | Inputs (left side) and outputs (right side) - simplifies routing on double-layer boards by reducing trace crossovers. |
| High ESD immunity | 2000-V HBM rating - reduces field failure risk in handling, assembly, and end-user environments. |
Applications
| Memory Address Buffering | Industrial Bus Interface |
|---|---|
Use Scenario: Driving 8-bit address lines from a microcontroller to SRAM or flash memory in a PLC mainboard. IC Role / Device Role / Timing Role: Noninverting buffer isolating MCU address pins from capacitive bus loading; enables clean edge transitions at up to 25 MHz. Use Value: Prevents address skew and timing violations caused by trace capacitance, ensuring reliable memory access across –40°C to 85°C ambient. |
Use Scenario: Interfacing a 3.3-V FPGA I/O bank to a 5-V sensor bus in factory automation equipment. IC Role / Device Role / Timing Role: Voltage-translating driver translating FPGA outputs to 5-V logic levels while maintaining signal integrity. Use Value: Eliminates external level-shifter components and associated BOM cost, board space, and signal path delay. |
| Automotive Control Module | Test Equipment Signal Conditioning |
Use Scenario: Buffering diagnostic command lines between an ARM-based gateway MCU and legacy 5-V CAN transceiver peripherals. IC Role / Device Role / Timing Role: 3-state-enabled driver allowing bidirectional bus arbitration and safe power sequencing during ignition cycles. Use Value: Ioff protection prevents backfeed from powered CAN bus into unpowered MCU domain during cold cranking events. |
Use Scenario: Isolating and strengthening digital stimulus signals in automated test equipment (ATE) pin electronics. IC Role / Device Role / Timing Role: High-speed buffer providing drive strength and noise margin for precise timing generation to DUTs. Use Value: 4 ns tpd and low VOLP ensure sub-10 ns pulse fidelity and minimal jitter accumulation across 8 parallel channels. |
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 |
|---|---|---|---|
| SN74LVC541APW | 3.3-V only supply (1.65–3.6 V); lower drive (±24 mA); no TTL input compatibility. | Requires level shifting for 5-V systems; unsuitable for mixed-voltage buses. | Choose only if entire system operates at 3.3 V and higher speed (2.5 ns tpd) is needed. |
| 74ACT541SCX | 5-V only; higher drive (±24 mA); faster tpd (3.5 ns); no Ioff or mixed-voltage support. | Lacks partial-power-down capability; incompatible with 3.3-V inputs without clamping. | Select when maximum speed and drive are prioritized over power sequencing flexibility and voltage translation. |
Compared with SN74LV541ATDWR, SN74LVC541APW offers better speed at 3.3 V but cannot replace it in 5-V or mixed-voltage designs, while 74ACT541SCX delivers higher performance in legacy 5-V-only systems but sacrifices Ioff safety and input compatibility.
Availability
SN74LV541ATDWR is available at Aetrix Electronics and suitable for industrial control systems, automotive ECUs, and test instrumentation requiring stable component supply, long-term lifecycle support, and RoHS-compliant SOIC packaging.
Supply support for SN74LV541ATDWR 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 SN74LV541ATDWR belongs to TI's LV-A family of low-voltage, TTL-compatible logic devices engineered for robust mixed-signal interfacing in automotive, industrial, and communications infrastructure.
FAQ
What is the recommended power supply decoupling for SN74LV541ATDWR?
Place a 0.1-µF ceramic capacitor between Pin 20 (VCC) and Pin 11 (GND), located as close as possible to the SOIC package. For systems with heavy switching loads, add a 4.7-µF bulk capacitor nearby. This minimizes supply noise and ensures stable 4.5–5.5-V operation of SN74LV541ATDWR across its full temperature range.
Does SN74LV541ATDWR support hot insertion or partial power-down?
Yes. SN74LV541ATDWR integrates Ioff circuitry that disables outputs and limits off-state current to ≤5 µA when VCC = 0, preventing backflow from live buses. This makes SN74LV541ATDWR suitable for hot-swap applications such as modular I/O cards and field-replaceable units where power domains sequence independently.
Can SN74LV541ATDWR interface directly with 3.3-V microcontrollers?
Yes. SN74LV541ATDWR accepts 3.3-V logic levels as valid inputs (VIH = 2 V min, VIL = 0.8 V max) while operating at 5 V, enabling direct connection to 3.3-V MCUs without level shifters. Its outputs swing rail-to-rail (VOH ≈ VCC, VOL ≈ 0 V), making SN74LV541ATDWR ideal for translating up to 5 V for legacy peripherals.
What is the function of OE1 and OE2 on SN74LV541ATDWR?
OE1 (Pin 1) and OE2 (Pin 19) are active-low, dual-input AND-gated output enables. If either is high, all eight Y outputs enter high-impedance state. Both must be low to enable noninverted data flow from A1–A8 to Y1–Y8. This architecture allows flexible group control - for example, OE1 for primary bus, OE2 for backup or diagnostic mode - within SN74LV541ATDWR.
Is SN74LV541ATDWR pin-compatible with older 74LS541 devices?
No. While functionally similar as octal 3-state buffers, SN74LV541ATDWR uses a different pinout: OE1/OE2 are on Pins 1/19, whereas 74LS541 places single OE on Pin 1. Additionally, SN74LV541ATDWR has opposite-side I/O layout (inputs left, outputs right), unlike 74LS541's interleaved arrangement. PCB redesign is required; SN74LV541ATDWR is not a drop-in replacement for 74LS541.
SN74LV541ATDWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LV
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- 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-SOIC
SN74LV541ATDWR FAQ
1.How can I place an order for SN74LV541ATDWR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LV541ATDWR 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 SN74LV541ATDWR reliable?
The price and inventory of SN74LV541ATDWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LV541ATDWR is usually 5 days.
3.What payment methods are accepted for SN74LV541ATDWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LV541ATDWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LV541ATDWR?
SN74LV541ATDWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LV541ATDWR 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 SN74LV541ATDWR?
For technical support, including SN74LV541ATDWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LV541ATDWR requirements.
6.How does Aetrix verify that SN74LV541ATDWR is sourced from the original manufacturer or authorized distributors?
All SN74LV541ATDWR 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 SN74LV541ATDWR meets industry standards.
7.What is the process for return or replacement of SN74LV541ATDWR?
All SN74LV541ATDWR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LV541ATDWR, 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 SN74LV541ATDWR part is unused and in its original packaging.
Return procedure for SN74LV541ATDWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74LV541ATDWR 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…
