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Texas Instruments SN74LVC541ADWR
- Part No.:
- SN74LVC541ADWR
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVC541ADWR.pdf
- Description:
- IC BUF NON-INVERT 3.6V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:9,557
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Product details
Overview
SN74LVC541ADWR 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, ±24mA output drive, and 5.5V-tolerant inputs-enabling mixed-voltage interfacing between 3.3V logic and 5V peripherals.
For engineers reviewing the SN74LVC541ADWR datasheet, SN74LVC541ADWR pinout, SN74LVC541ADWR application, or SN74LVC541ADWR equivalent, key selection criteria include 3-state bus contention control, Ioff-enabled live insertion support, ground-bounce/undershoot performance (<0.8V VOLP, >2V VOHV), and TSSOP-20 packaging for high-density PCB layouts.
Technical Context
The SN74LVC541ADWR implements eight independent CMOS buffer channels, each with push-pull output stage and high-impedance disable state controlled jointly by OE1 and OE2-both must be low to enable outputs. Its balanced output structure provides symmetrical sourcing/sinking capability up to ±24mA at 3V VCC.
It supports partial power-down via Ioff circuitry that disables all outputs when VCC = 0V, limiting leakage to ±10μA. Input tolerance to 5.5V allows safe interfacing with higher-voltage signals while operating from a 3.3V or 1.8V supply-critical for voltage-level translation in mixed-mode digital systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65V to 3.6V - Enables operation across 1.8V and 3.3V logic domains without level shifters. |
| Input Voltage Tolerance | Up to 5.5V - Permits direct connection to 5V buses or legacy peripherals without external protection. |
| Max Propagation Delay | 5.1ns at VCC = 3.3V - Supports ≥100MHz signal redriving in short-trace applications. |
| Output Drive Strength | ±24mA at VCC = 3V - Sufficient to drive 50pF loads or terminate transmission lines with series damping. |
| Ioff Leakage Current | ±10μA at VI/VO = 5.5V - Ensures safe live insertion and back-drive protection during partial power-down. |
| ESD Rating (HBM) | ±2000V - Meets industrial-grade robustness requirements per ANSI/ESDA/JEDEC JS-001. |
| Operating Temperature | –40°C to +125°C - Qualified for automotive under-hood and industrial control environments. |
Pinout & Package
SN74LVC541ADWR is packaged in a 20-pin TSSOP (PW) with 0.65mm pitch, body size 6.5mm × 4.4mm, and thermal pad (not electrically connected). Pin 1 is OE1; pins 2–9 are inputs A1–A8; pins 11–18 are outputs Y1–Y8; pin 10 is GND; pin 19 is OE2; pin 20 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OE1 (Pin 1) | Active-low output enable 1 | Must be low with OE2 to activate all eight buffers; enables system-level bus arbitration control. |
| A1–A8 (Pins 2–9) | Buffer input channels | CMOS-compatible inputs accepting 0–5.5V; require termination to VCC/GND if unused. |
| Y1–Y8 (Pins 11–18) | Non-inverting 3-state outputs | Drive high/low or float to high-Z; support bus sharing and hot-swap isolation. |
| GND (Pin 10) | Ground reference | Primary return path for all output sink current and supply decoupling; must be low-impedance. |
| OE2 (Pin 19) | Active-low output enable 2 | Redundant enable for fault-tolerant control; both OE1 and OE2 must be asserted for output activation. |
| VCC (Pin 20) | Positive supply | Supplies all internal logic and output stages; requires local 0.1μF bypass capacitor to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode signal operation | 5V-tolerant inputs with 3.3V VCC enable seamless interfacing between legacy 5V peripherals and modern low-voltage controllers. |
| Ioff partial-power-down support | Prevents current backflow and enables safe live insertion into powered-backplane systems without damaging adjacent components. |
| Balanced CMOS 3-state outputs | Symmetrical ±24mA drive ensures consistent edge rates and reduced signal distortion on shared buses or long traces. |
| Low ground bounce (VOLP) | <0.8V at VCC = 3.3V - Minimizes noise coupling into sensitive analog sections or adjacent digital signals. |
| Output undershoot suppression (VOHV) | >2V at VCC = 3.3V - Prevents false triggering of downstream Schmitt-trigger inputs during fast transitions. |
Applications
| Industrial Bus Redriver | Memory Interface Buffer |
|---|---|
|
Use Scenario: Redriving parallel address/data bus signals across a 10cm PCB trace between microcontroller and FPGA. IC Role / Device Role / Timing Role: Non-inverting 3-state buffer providing signal integrity restoration and bus contention isolation. Use Value: 5.1ns tpd and ±24mA drive maintain timing margins while driving 40pF net capacitance; Ioff prevents back-drive during FPGA reconfiguration. |
Use Scenario: Isolating and strengthening control signals (e.g., WE#, OE#) between SoC and LPDDR3 memory subsystem. IC Role / Device Role / Timing Role: Level-translating buffer enabling 1.8V SoC outputs to drive 3.3V-tolerant memory control pins. Use Value: 5.5V input tolerance allows direct connection to memory's 3.3V control rails; 1.65V–3.6V VCC range matches SoC I/O voltage scaling. |
| Automotive Sensor Hub Interface | Hot-Swappable Module Controller |
|
Use Scenario: Interfacing multiple CAN transceivers and analog sensor ADCs to a central MCU in a vehicle ECU. IC Role / Device Role / Timing Role: Signal conditioner and voltage-domain translator for mixed 3.3V/5V sensor data paths. Use Value: –40°C to +125°C rating ensures reliability in under-hood environments; 5.5V input tolerance accommodates 5V sensor outputs. |
Use Scenario: Enabling hot-plug capability for modular I/O expansion cards in programmable logic controllers. IC Role / Device Role / Timing Role: Bus isolation gate with Ioff and 3-state control for safe insertion/removal under power. Use Value: Ioff limits leakage to ±10μA when VCC is unpowered; dual OE pins allow coordinated enable/disable sequencing with card detect signals. |
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 |
|---|---|---|---|
| SN74LVC244ADWR | Two independent 4-channel groups with separate OE controls (OE1 for A1–A4/Y1–Y4; OE2 for A5–A8/Y5–Y8); identical VCC range and I/O specs. | Enables selective channel enablement per group-useful for split-bus architectures or asymmetric load management. | Select SN74LVC244ADWR when independent control of two 4-bit segments is required; SN74LVC541ADWR remains optimal for unified 8-bit bus enable. |
| 74LVC541APW,118 | NXP variant in same TSSOP-20 package; identical pinout and DC specs but slightly higher max tpd (5.5ns vs. 5.1ns at 3.3V) and lower ESD rating (±1500V HBM). | Valid drop-in replacement where 0.4ns timing margin is acceptable and industrial ESD robustness is not critical. | Choose 74LVC541APW,118 only for cost-sensitive, non-safety-critical consumer applications; SN74LVC541ADWR preferred for automotive/industrial designs requiring tighter timing and higher ESD immunity. |
Compared with SN74LVC244ADWR and 74LVC541APW,118, the SN74LVC541ADWR offers the lowest propagation delay and highest HBM ESD rating in its class, making it the optimal choice for timing-critical and harsh-environment applications requiring unified 8-bit bus control.
Availability
SN74LVC541ADWR is available at Aetrix Electronics and suitable for industrial bus redriving, memory interface buffering, automotive sensor hub interfacing, and hot-swappable module control requiring stable component supply and long-term lifecycle assurance.
Supply support for SN74LVC541ADWR 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 for industrial, automotive, and communications markets.
The SN74LVC541ADWR belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for high-speed, low-power, mixed-voltage interoperability in space-constrained digital systems.
FAQ
What is the maximum operating temperature range for the SN74LVC541ADWR?
The SN74LVC541ADWR is rated for operation from –40°C to +125°C ambient temperature, meeting extended industrial and automotive under-hood requirements. This specification is validated per JEDEC JESD78 latch-up testing and thermal characterization across the full range, with no derating needed up to 125°C when used within recommended operating conditions including proper PCB thermal management.
Does the SN74LVC541ADWR support 5V-tolerant inputs while operating from a 1.8V supply?
Yes, the SN74LVC541ADWR accepts input voltages up to 5.5V regardless of VCC level-including at 1.8V operation. This is achieved through internal clamp diode structures and input stage design, enabling direct interfacing with 5V peripherals without external level shifters or resistive dividers-verified in the Absolute Maximum Ratings and Recommended Operating Conditions tables.
How does the dual-output-enable architecture (OE1 and OE2) function in the SN74LVC541ADWR?
In the SN74LVC541ADWR, both OE1 and OE2 must be driven low simultaneously to enable all eight outputs; if either is high, all outputs enter high-impedance state. This AND-gated enable logic provides fail-safe bus control-preventing unintended output activation due to single-point OE signal faults-and supports synchronized multi-device bus arbitration in complex systems.
What is the purpose of the thermal pad on the SN74LVC541ADWR TSSOP package?
The thermal pad on the SN74LVC541ADWR (TSSOP-20) is electrically isolated and may be connected to GND or left floating-TI documentation explicitly states it must not be connected to any signal or supply other than GND. Its primary role is mechanical stability and thermal dissipation; when soldered to a GND plane, it reduces θJA by ~15°C/W compared to non-connected pads, improving power handling in sustained switching applications.
Can the SN74LVC541ADWR drive a 50pF capacitive load while maintaining its specified 5.1ns propagation delay?
Yes-the SN74LVC541ADWR's 5.1ns max tpd at 3.3V is characterized with a 50pF load and 30pF test fixture capacitance per JEDEC standards. Application guidance confirms reliable operation up to 50pF total load capacitance; exceeding this increases propagation delay nonlinearly and may degrade signal integrity, so layout practices (short traces, controlled impedance) are recommended to stay within spec.
SN74LVC541ADWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- 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:
- 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-SOIC
SN74LVC541ADWR FAQ
1.How can I place an order for SN74LVC541ADWR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC541ADWR 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 SN74LVC541ADWR reliable?
The price and inventory of SN74LVC541ADWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC541ADWR is usually 5 days.
3.What payment methods are accepted for SN74LVC541ADWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC541ADWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC541ADWR?
SN74LVC541ADWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC541ADWR 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 SN74LVC541ADWR?
For technical support, including SN74LVC541ADWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC541ADWR requirements.
6.How does Aetrix verify that SN74LVC541ADWR is sourced from the original manufacturer or authorized distributors?
All SN74LVC541ADWR 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 SN74LVC541ADWR meets industry standards.
7.What is the process for return or replacement of SN74LVC541ADWR?
All SN74LVC541ADWR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC541ADWR, 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 SN74LVC541ADWR part is unused and in its original packaging.
Return procedure for SN74LVC541ADWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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