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Texas Instruments SN74LVC541APWRE4
- Part No.:
- SN74LVC541APWRE4
- Manufacturer:
- Texas Instruments
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LVC541APWRE4.pdf
- Description:
- IC BUF NON-INVERT 3.6V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,988
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Product details
Overview
SN74LVC541APWRE4 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 in partial-power-down applications.
For engineers reviewing the SN74LVC541APWRE4 datasheet, SN74LVC541APWRE4 pinout, SN74LVC541APWRE4 application, or SN74LVC541APWRE4 equivalent, key selection criteria include 3-state drive capability, mixed-mode voltage compatibility (5V inputs into 3.3V VCC), ground bounce & undershoot performance, thermal metrics for TSSOP-20, and functional behavior under industrial temperature range (–40°C to 125°C).
Technical Context
The SN74LVC541APWRE4 implements balanced CMOS 3-state outputs-capable of sourcing/sinking up to ±24mA at 3V-with both OE1 and OE2 required low to enable all eight channels. Its input structure accepts voltages up to 5.5V independent of VCC, enabling seamless level translation between 5V legacy logic and 3.3V/1.8V domains.
It integrates Ioff circuitry that disables outputs when VCC = 0V, preventing back-drive current and supporting hot-plug operation. The device exhibits typical output ground bounce (VOLP) <0.8V and VOH undershoot (VOHV) >2V at VCC = 3.3V, TA = 25°C-critical for signal integrity in high-speed digital interconnects.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 3.6V - supports single-supply operation across LVC logic families and mixed-voltage system interfaces |
| Input Voltage Tolerance | Up to 5.5V - enables direct connection to 5V logic without external level shifters |
| Max Propagation Delay | 5.1ns at VCC = 3.3V - ensures timing compliance in high-speed data paths up to ~200MHz |
| Output Drive | ±24mA at VCC = 3V - sufficient to drive 50pF loads or terminate transmission lines |
| Ioff Current | ±10μA max - guarantees isolation during power sequencing or hot-swap events |
| Operating Temperature | –40°C to 125°C - qualified for automotive under-hood and industrial control environments |
| ESD Rating (HBM) | ±2000V - meets JEDEC JS-001 for robust handling in manufacturing and field deployment |
Pinout & Package
TSSOP-20 package (PW), 6.5mm × 6.4mm body size, 20-pin surface-mount with exposed thermal pad (not electrically connected); pin 1 = OE1, pin 19 = OE2, pin 20 = VCC, pin 10 = GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OE1, OE2 | Active-low 3-state enable inputs | Both must be low to activate all eight outputs; enables shared bus arbitration and power-gated subsystem control |
| A1–A8 | Buffer input terminals | Non-inverting logic inputs accepting 5.5V-tolerant signals; each drives corresponding Y output |
| Y1–Y8 | 3-state buffered outputs | CMOS push-pull outputs with high-impedance state when OE1/OE2 high; support bus contention avoidance |
| VCC | Positive supply | Single 1.65–3.6V rail powering logic core and output drivers; requires local 0.1μF bypass |
| GND | Ground reference | Common return path for supply and signal currents; critical for minimizing ground bounce (VOLP) |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode signal operation | 5V-tolerant inputs on 3.3V VCC allow interoperability with legacy 5V peripherals without level-shifting circuitry |
| Ioff partial-power-down protection | Outputs fully disable when VCC = 0V, eliminating back-drive current and enabling safe live insertion |
| Balanced 3-state drive | Symmetric ±24mA output capability ensures consistent rise/fall times and minimizes signal distortion on PCB traces |
| Low ground bounce (VOLP) | Typical <0.8V at 3.3V - reduces noise coupling into adjacent signals and improves timing margin |
| Latch-up immunity | Exceeds 100mA per JESD78 - eliminates risk of destructive latch-up under transient overvoltage conditions |
Applications
| Bus Signal Redriving | LED Indicator Driving |
|---|---|
Use Scenario: Extending a microcontroller GPIO bus across a 15cm PCB trace to multiple peripheral ICs with cumulative load capacitance >30pF. IC Role / Device Role: Non-inverting 3-state buffer redriving logic levels while isolating source loading. Use Value: Maintains signal edge rate and timing margin via 5.1ns tpd and ±24mA drive, avoiding waveform degradation seen with direct long-trace routing. | Use Scenario: Driving a 20mA common-anode LED array from a 3.3V FPGA I/O bank with limited sink current per pin. IC Role / Device Role: High-current 3-state buffer sinking LED current through Yx outputs. Use Value: Enables full-brightness LED operation without exceeding FPGA I/O limits, using dedicated buffer sink capability instead of GPIO direct drive. |
| Transmission Line Termination | Controller Reset Hold |
Use Scenario: Driving a 50Ω controlled-impedance trace (>12cm) from an MCU to an isolated sensor node with stub-free topology. IC Role / Device Role: Impedance-matched signal driver with fast edges and low ground bounce. Use Value: Reduces reflections and ringing by delivering clean transitions into 50pF loads, validated by VOLP <0.8V and VOHV >2V specs. | Use Scenario: Holding a reset line asserted during microcontroller boot sequence until power rails stabilize and clocks lock. IC Role / Device Role: 3-state buffer holding reset signal low via A→Y path while OE1/OE2 are held low. Use Value: Provides glitch-free, low-leakage hold function with Ioff ≤±10μA, eliminating need for external pull-down resistors or RC networks. |
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 |
|---|---|---|---|
| SN74LVC244APWRE4 | Two groups of four buffers with independent OE controls; identical VCC range, speed, and Ioff | Enables independent enable of two 4-bit buses vs. single 8-bit bus control in SN74LVC541APWRE4 | Select when separate bus arbitration or staggered enable timing is required |
| 74LVC541AD,118 | SOIC-20 package (DW), same electrical specs but higher RθJA (114.8°C/W vs. 120.3°C/W) | Preferred for through-hole prototyping or legacy board designs requiring SOIC footprint | Select when mechanical compatibility with existing SOIC layouts is mandatory |
Compared with SN74LVC541APWRE4, SN74LVC244APWRE4 offers finer-grained bus control at identical performance, while 74LVC541AD,118 provides identical functionality in SOIC-20 for backward-compatible assembly-neither is pin-compatible, but both serve overlapping signal-buffering roles in industrial and embedded systems.
Availability
SN74LVC541APWRE4 is available at Aetrix Electronics and suitable for industrial automation interfaces, automotive body control modules, and embedded computing backplanes requiring stable component supply, extended temperature operation, and 3-state bus management.
Supply support for SN74LVC541APWRE4 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 logic interface products.
The SN74LVC541APWRE4 belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for low-voltage, high-speed, 3-state bus interfacing in mixed-signal and embedded systems where power efficiency and signal integrity are critical.
FAQ
What is the maximum operating temperature range for SN74LVC541APWRE4?
The SN74LVC541APWRE4 is rated for operation from –40°C to +125°C ambient temperature, making it suitable for under-hood automotive applications and industrial environments with elevated thermal stress. This rating is verified per JEDEC JESD47 and applies to the PW (TSSOP-20) package variant, with thermal resistance RθJA = 120.3°C/W.
Does SN74LVC541APWRE4 support 5V input signals when powered at 3.3V?
Yes, SN74LVC541APWRE4 supports input voltages up to 5.5V regardless of VCC level, enabling direct interfacing with 5V logic families while operating from a 3.3V supply. This mixed-mode capability eliminates external level translators in many system designs and is explicitly guaranteed in the Recommended Operating Conditions table.
How does the dual-output-enable architecture of SN74LVC541APWRE4 function?
SN74LVC541APWRE4 requires both OE1 (pin 1) and OE2 (pin 19) to be logic low for any output (Y1–Y8) to be active. If either OE is high, all outputs enter high-impedance state. This AND-gated enable logic prevents accidental bus contention and supports fail-safe bus arbitration schemes in multi-master systems.
What is the purpose of the thermal pad on the SN74LVC541APWRE4 TSSOP package?
The thermal pad on SN74LVC541APWRE4 (PW package) is not electrically connected and may be left floating or tied to GND for improved thermal conduction. It does not serve as a signal or power terminal. TI recommends soldering it to a thermal land on the PCB to reduce junction-to-board thermal resistance and enhance power dissipation capability.
Can SN74LVC541APWRE4 drive a 50pF capacitive load while meeting timing specifications?
Yes, SN74LVC541APWRE4 is characterized to drive loads ≤50pF while maintaining full specification compliance-including 5.1ns max tpd at 3.3V. Exceeding 50pF increases propagation delay and may degrade edge rates; for heavier loads, parallel outputs or additional buffering should be considered per TI Application Report SCBA001.
SN74LVC541APWRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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-TSSOP
SN74LVC541APWRE4 FAQ
1.How can I place an order for SN74LVC541APWRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC541APWRE4 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 SN74LVC541APWRE4 reliable?
The price and inventory of SN74LVC541APWRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC541APWRE4 is usually 5 days.
3.What payment methods are accepted for SN74LVC541APWRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC541APWRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC541APWRE4?
SN74LVC541APWRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC541APWRE4 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 SN74LVC541APWRE4?
For technical support, including SN74LVC541APWRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC541APWRE4 requirements.
6.How does Aetrix verify that SN74LVC541APWRE4 is sourced from the original manufacturer or authorized distributors?
All SN74LVC541APWRE4 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 SN74LVC541APWRE4 meets industry standards.
7.What is the process for return or replacement of SN74LVC541APWRE4?
All SN74LVC541APWRE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC541APWRE4, 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 SN74LVC541APWRE4 part is unused and in its original packaging.
Return procedure for SN74LVC541APWRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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