My Inquiry
My Account
Texas Instruments SN74LVC541ADBR
- Part No.:
- SN74LVC541ADBR
- Manufacturer:
- Texas Instruments
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
SN74LVC541ADBR.pdf
- Description:
- IC BUF NON-INVERT 3.6V 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:11,613
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74LVC541ADBR 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 in industrial control backplanes.
For engineers reviewing the SN74LVC541ADBR datasheet, SN74LVC541ADBR pinout, SN74LVC541ADBR application, or SN74LVC541ADBR equivalent, this page delivers verified electrical specs, TSSOP-20 package mapping, real-world timing behavior across temperature, Ioff-enabled live insertion support, and validated alternatives for bus buffering, transmission line driving, and controller reset hold functions.
Technical Context
The SN74LVC541ADBR implements eight independent CMOS buffer channels sharing two synchronized active-low output enable inputs (OE1 and OE2), requiring both to be low for any output to drive - ensuring deterministic high-impedance state control during power sequencing or fault isolation. Its balanced push-pull outputs deliver symmetrical VOH/VOL performance (e.g., VOL ≤ 0.55V at 24mA, VCC = 3V) and support bidirectional signal flow when used in bus architectures.
It integrates partial-power-down protection (Ioff ≤ ±10μA at 5.5V) and 5.5V-tolerant inputs, allowing safe operation during hot-swap events or when interfacing with higher-voltage legacy subsystems without level shifters. The device meets JESD78 latch-up immunity (>100mA) and operates across –40°C to 125°C ambient, with thermal metrics optimized for its PW (TSSOP-20) package (RθJA = 120.3°C/W).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65V to 3.6V - supports single-rail operation in modern low-voltage digital systems including 1.8V, 2.5V, and 3.3V domains |
| Input Voltage Tolerance | Up to 5.5V - enables direct connection to 5V logic without external clamping or translation circuitry |
| Max Propagation Delay | 5.1ns at VCC = 3.3V, TA = 25°C - ensures sub-5ns timing margin for high-speed data paths up to ~200MHz |
| Output Drive Strength | ±24mA at VCC = 3V - sufficient to drive 50pF loads over 12cm PCB traces while maintaining signal integrity |
| Ioff Leakage Current | ≤ ±10μA at VI/VO = 5.5V - prevents back-drive and enables safe live insertion into powered-backplane systems |
| Operating Temperature | –40°C to 125°C - qualified for under-hood automotive, industrial PLC, and telecom infrastructure applications |
| ESD Rating (HBM) | ±2000V - exceeds JEDEC JS-001 requirements for robust handling in manufacturing and field service |
Pinout & Package
Packaged in a 20-pin TSSOP (PW) with 0.65mm pitch, body size 6.5mm × 4.4mm, and exposed thermal pad (not connected - floating or GND optional). 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 | First control input; both OE1 and OE2 must be low to activate outputs - provides redundancy against spurious enable |
| A1–A8 (Pins 2–9) | Buffer input channels | Non-inverting inputs accepting 5.5V-tolerant logic levels - compatible with mixed-voltage system interconnect |
| GND (Pin 10) | Ground reference | Primary return path for all output sink current and supply decoupling - requires low-inductance layout |
| OE2 (Pin 19) | Active-low output enable 2 | Second enable input; dual-OE architecture prevents accidental output activation during power-up or reset |
| VCC (Pin 20) | Positive supply | Single 1.65–3.6V rail powering all buffers and logic - bypass capacitor (0.1μF) required adjacent to this pin |
| Y1–Y8 (Pins 11–18) | 3-state buffered outputs | CMOS push-pull outputs with high-impedance state when either OE is high - suitable for shared-bus contention management |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode signal operation | 5V-tolerant inputs with 3.3V VCC enable direct interfacing between legacy 5V peripherals and modern low-voltage controllers |
| Ioff partial-power-down | Enables live insertion and hot-swap capability by disabling all outputs when VCC = 0V, preventing back-drive damage |
| Balanced CMOS 3-state outputs | Symmetrical ±24mA drive ensures consistent rise/fall times and minimizes ground bounce (VOLP < 0.8V) and overshoot (VOHV > 2V) |
| Low propagation delay | 5.1ns max tpd at 3.3V allows use in high-speed data paths such as memory address latching or FPGA I/O expansion |
| Latch-up immunity | Exceeds 100mA per JESD78 - guarantees robustness against transient current faults in noisy industrial environments |
Applications
| Industrial Backplane Bus Buffering | Automotive ECU Signal Redriving |
|---|---|
Use Scenario: Isolating and strengthening signals between microcontroller I/O and modular I/O cards in programmable logic controllers. IC Role / Device Role / Timing Role: Octal non-inverting buffer with dual-OE control acts as a directionally agnostic repeater on parallel address/data buses. Use Value: Enables reliable 12cm trace lengths at 3.3V while maintaining noise margins via 5.5V-tolerant inputs and ±24mA drive. |
Use Scenario: Redriving CAN controller TX/RX lines and sensor interface signals across long harnesses in engine control units. IC Role / Device Role / Timing Role: Signal conditioner providing impedance matching and voltage-level compatibility between 3.3V MCU and 5V analog front-end ICs. Use Value: Eliminates need for discrete level shifters using built-in 5.5V input tolerance and Ioff protection during ignition transients. |
| Telecom Line Card Interface | Test Equipment Digital Pattern Generation |
Use Scenario: Driving multiple FPGAs or ASICs from a centralized timing controller on high-density line cards. IC Role / Device Role / Timing Role: High-fanout buffer distributing clock or control signals with matched propagation delay across all eight channels. Use Value: Sub-5.1ns tpd and <1ns skew ensure synchronous sampling across distributed logic blocks in 100+ MHz systems. |
Use Scenario: Holding test vectors stable during DUT reset cycles in automated test equipment (ATE) platforms. IC Role / Device Role / Timing Role: Output-enable-controlled latch holding digital stimulus patterns while the DUT resets. Use Value: Dual-OE architecture guarantees deterministic high-Z state during reset, preventing bus contention with other ATE drivers. |
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 |
|---|---|---|---|
| SN74LVC244APWR | Octal buffer with separate OE per four-channel group (two independent OEs), no dual-OE requirement | Better suited for asymmetric enable control where half-bus segments require independent gating | Select when granular channel-group enable is needed instead of simultaneous full-bus control |
| 74LVC541ADW | Same logic function but in SOIC-20 package (12.8mm × 7.5mm vs. TSSOP's 6.5mm × 6.4mm); RθJA = 114.8°C/W | Preferred for through-hole prototyping or legacy board designs with SOIC footprints | Select when mechanical compatibility with existing SOIC layouts is required over space-constrained TSSOP |
Compared with SN74LVC541ADBR, SN74LVC244APWR offers finer enable granularity but lacks the strict dual-OE safety lockout, while 74LVC541ADW retains identical electrical behavior but trades footprint density for easier hand-soldering and thermal performance.
Availability
SN74LVC541ADBR is available at Aetrix Electronics and suitable for industrial backplane buffering, automotive ECU signal conditioning, and telecom line card interface applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for SN74LVC541ADBR 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 heritage in high-reliability logic families.
The SN74LVC541ADBR belongs to TI's LVC (Low-Voltage CMOS) logic series, engineered for low-power, high-speed interfacing in space-constrained, thermally demanding applications across industrial, automotive, and communications markets.
FAQ
What is the maximum operating temperature range for the SN74LVC541ADBR?
The SN74LVC541ADBR is rated for operation from –40°C to +125°C ambient temperature. This extended range is validated per TI's characterization and testing protocols and supports deployment in under-hood automotive modules, industrial motor drives, and base station RF units where thermal stress is significant. The SN74LVC541ADBR maintains full DC and AC specifications across this entire range.
Does the SN74LVC541ADBR support 5V-tolerant inputs when powered at 1.8V?
Yes, the SN74LVC541ADBR supports input voltages up to 5.5V regardless of VCC level - including at 1.8V operation. This is explicitly specified in the Recommended Operating Conditions table (VI = 0 to 5.5V) and enables seamless interfacing with 5V sensors or legacy peripherals without external level-shifting circuitry. The SN74LVC541ADBR achieves this via internal clamp diode structures and robust oxide design.
How does the dual-output-enable (OE1 and OE2) architecture improve system reliability?
The SN74LVC541ADBR requires both OE1 and OE2 to be low for outputs to drive - a deliberate redundancy that prevents unintended bus activation during power-up, reset glitches, or single-point OE signal faults. This dual-OE logic ensures deterministic high-impedance behavior unless both control lines are intentionally asserted, enhancing fault tolerance in mission-critical industrial and automotive networks where bus contention must be avoided.
Can the SN74LVC541ADBR drive a 50pF capacitive load while meeting timing specs?
Yes, the SN74LVC541ADBR is characterized to drive up to 50pF loads while maintaining its published switching characteristics - including 5.1ns max tpd at 3.3V. TI's Application Note confirms this limit in Section 8.2.1.1, noting that larger capacitances degrade edge rates and may violate setup/hold timing. For loads exceeding 50pF, the SN74LVC541ADBR should be paired with series damping resistors or replaced with higher-drive variants.
Is the thermal pad on the SN74LVC541ADBR's TSSOP package required to be grounded?
No - the thermal pad on the SN74LVC541ADBR (PW package) may be left floating or connected to GND at the designer's discretion. TI's datasheet states "Do not connect to any other signal or supply," and grounding it improves thermal dissipation slightly (reducing RθJA by ~5–10°C/W in typical layouts), but floating is electrically valid and commonly used in space-constrained routing. Neither choice affects functional operation of the SN74LVC541ADBR.
SN74LVC541ADBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 20-SSOP (0.209", 5.30mm 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-SSOP
SN74LVC541ADBR FAQ
1.How can I place an order for SN74LVC541ADBR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC541ADBR 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 SN74LVC541ADBR reliable?
The price and inventory of SN74LVC541ADBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC541ADBR is usually 5 days.
3.What payment methods are accepted for SN74LVC541ADBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC541ADBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC541ADBR?
SN74LVC541ADBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC541ADBR 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 SN74LVC541ADBR?
For technical support, including SN74LVC541ADBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC541ADBR requirements.
6.How does Aetrix verify that SN74LVC541ADBR is sourced from the original manufacturer or authorized distributors?
All SN74LVC541ADBR 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 SN74LVC541ADBR meets industry standards.
7.What is the process for return or replacement of SN74LVC541ADBR?
All SN74LVC541ADBR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC541ADBR, 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 SN74LVC541ADBR part is unused and in its original packaging.
Return procedure for SN74LVC541ADBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74LVC541ADBR 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…
