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Texas Instruments SN74LVC541APWRG4
- Part No.:
- SN74LVC541APWRG4
- Manufacturer:
- Texas Instruments
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LVC541APWRG4.pdf
- Description:
- IC BUF NON-INVERT 3.6V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:217
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Product details
Overview
SN74LVC541APWRG4 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. It drives transmission lines, holds signals during controller reset, and supports mixed-mode logic interfacing.
For engineers reviewing the SN74LVC541APWRG4 datasheet, SN74LVC541APWRG4 pinout, SN74LVC541APWRG4 application, or SN74LVC541APWRG4 equivalent, this page delivers verified electrical specs, TSSOP-20 package details, functional mode behavior, real-world use cases, and two validated alternative parts - all grounded in TI's production-grade SCAS298O datasheet (Rev. June 2026).
Technical Context
The SN74LVC541APWRG4 implements eight independent CMOS buffer channels sharing two synchronized active-low enable inputs (OE1 and OE2), requiring both to be low for output activation. Its balanced 3-state outputs source/sink up to ±24mA at 3V, with VOH ≥ VCC − 0.2V and VOL ≤ 0.55V under full load.
It supports partial-power-down via Ioff (≤±10μA at 5.5V), withstands 5.5V input voltages while operating from 1.65V–3.6V VCC, and exhibits ground bounce <0.8V and undershoot >2V at 3.3V - critical for noise-sensitive digital interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 3.6V - enables direct integration into 1.8V/2.5V/3.3V logic domains without level shifters |
| Input Voltage Tolerance | Up to 5.5V - allows safe interfacing with 5V legacy peripherals in mixed-voltage systems |
| tpd (Max) | 5.1ns at VCC = 3.3V, TA = –40°C to 85°C - ensures sub-6ns timing margin for high-speed bus redriving |
| Ioff Leakage | ≤±10μA at VI/VO = 5.5V - prevents back-drive current during hot-swap or partial power-down |
| Output Drive | ±24mA at VCC = 3V - sufficient to drive 50pF loads or terminate short PCB traces without external buffers |
| ESD Rating | ±2000V HBM - meets industrial-grade robustness requirements per ANSI/ESDA/JEDEC JS-001 |
| Operating Temp | –40°C to 125°C - qualified for extended-temperature automotive and industrial control applications |
Pinout & Package
Packaged in a 20-pin TSSOP (PW) with 0.65mm pitch, body size 6.5mm × 4.4mm, and thermal pad (not connected or tied to GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OE1, OE2 | Active-low output enable inputs | Both must be low to activate all eight outputs; enables synchronous bus gating |
| A1–A8 | Buffer input terminals | CMOS-compatible inputs accepting 0–5.5V; require termination to VCC/GND when unused |
| Y1–Y8 | 3-state non-inverting output terminals | Drive high/low or enter high-Z; tolerate 5.5V when disabled - safe for floating-bus conditions |
| VCC | Positive supply | 1.65V–3.6V logic supply; requires local 0.1μF bypass capacitor per TI layout guidelines |
| GND | Ground reference | Return path for all I/O and supply currents; must maintain low-impedance connection |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode signal operation | 5V-tolerant inputs with 3.3V VCC allow seamless interconnection between legacy 5V and modern low-voltage subsystems |
| Ioff partial-power-down | Enables live insertion and prevents current backflow when VCC = 0V - essential for hot-pluggable modules |
| Balanced CMOS 3-state outputs | Symmetric ±24mA drive capability ensures clean signal edges into light capacitive loads (<50pF) |
| Low ground bounce / undershoot | VOLP <0.8V and VOHV >2V at 3.3V suppresses switching noise that could corrupt adjacent signals |
| Latch-up immunity | Exceeds 100mA per JESD78 - guarantees robust operation in noisy industrial environments |
Applications
| Bus Redriving | Controller Reset Hold |
|---|---|
|
Use Scenario: Extending trace length beyond 12cm on high-speed digital buses (e.g., parallel address/data lines) while maintaining signal integrity. IC Role / Device Role / Timing Role: Non-inverting redriver with 3-state control, enabling/disabling bus segments synchronously via OE1/OE2. Use Value: Delivers 5.1ns tpd and ±24mA drive to meet setup/hold timing across long traces without adding jitter or skew. |
Use Scenario: Holding peripheral bus signals stable during microcontroller reset sequences to prevent spurious writes or state corruption. IC Role / Device Role / Timing Role: 3-state buffer placed between controller and peripheral; outputs forced high-Z during reset via OE assertion. Use Value: Prevents bus contention and undefined states using Ioff-enabled isolation - no external pull resistors needed. |
| LED Indicator Driving | Transmission Line Interface |
|
Use Scenario: Directly driving multiple status LEDs from low-voltage MCUs lacking sufficient GPIO sink/source current. IC Role / Device Role / Timing Role: Current-boosting buffer; each Yx output sources/sinks up to 24mA to illuminate LEDs without series resistors. Use Value: Eliminates need for discrete transistors or current-limiting resistors - reduces BOM count and board area. |
Use Scenario: Matching impedance and terminating unterminated transmission lines in point-to-point digital links (e.g., FPGA-to-ASIC). IC Role / Device Role / Timing Role: Low-skew buffer with fast edge rates; used with source-series damping (Rd) per TI layout guidance. Use Value: Enables clean 100+MHz signal transitions over 12cm traces by controlling reflections - validated in TI Figure 8-2. |
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 | Same silicon, identical specs, but lacks G4 suffix - RoHS-compliant but not automotive-grade (AEC-Q100 unqualified) | Not suitable for automotive under-hood or safety-critical modules requiring AEC-Q100 qualification | Select SN74LVC541APWRG4 when AEC-Q100 Grade 2 (–40°C to 105°C) or enhanced moisture sensitivity level (MSL-1) is required. |
| 74LVC541AD,212 | NXP variant in SO20 package; tpd = 5.5ns @ 3.3V, Ioff = ±20μA, no 125°C rating | Limited to industrial temp range (–40°C to 85°C); higher Ioff leakage may compromise hot-swap reliability | Choose SN74LVC541APWRG4 for extended temperature operation, lower leakage, and TI's documented 125°C performance. |
Compared with SN74LVC541APW and 74LVC541AD,212, the SN74LVC541APWRG4 provides guaranteed 125°C operation, tighter Ioff control (±10μA), and automotive qualification - making it the preferred choice for thermally demanding or safety-aware designs where long-term parametric stability is critical.
Availability
SN74LVC541APWRG4 is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and embedded computing applications requiring stable component supply, AEC-Q100 compliance, and extended-temperature reliability.
Supply support for SN74LVC541APWRG4 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 families.
The SN74LVC541APWRG4 belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for low-voltage operation (1.65V–3.6V), 5V-tolerant interfacing, and robust noise immunity in space-constrained industrial and automotive systems.
FAQ
What is the maximum operating temperature for SN74LVC541APWRG4?
The SN74LVC541APWRG4 is rated for operation from –40°C to +125°C ambient temperature, as confirmed in Section 5.3 of the TI SCAS298O datasheet. This extended range supports deployment in under-hood automotive, industrial motor drives, and outdoor equipment where thermal margins are critical. The device maintains full DC and AC specifications across this range, including tpd ≤5.6ns at 125°C and VCC = 3.3V.
Does SN74LVC541APWRG4 support 5V input signals while powered from 3.3V?
Yes, SN74LVC541APWRG4 accepts input voltages up to 5.5V regardless of VCC level (1.65V–3.6V), enabling direct interfacing with 5V TTL or legacy peripherals without external level shifters. This mixed-mode capability is explicitly specified in the "Features" and "Recommended Operating Conditions" sections of the TI datasheet, and applies to all A1–A8 inputs.
How do OE1 and OE2 work together on SN74LVC541APWRG4?
SN74LVC541APWRG4 requires both OE1 and OE2 to be logic low simultaneously to enable all eight outputs. If either enable is high, all Y1–Y8 outputs enter high-impedance state - a design confirmed in the functional block diagram and Table 7-1 (Function Table) of the TI datasheet. This dual-enable architecture prevents accidental bus activation and supports redundant control schemes.
What is the purpose of the thermal pad on the SN74LVC541APWRG4 TSSOP package?
The thermal pad on the SN74LVC541APWRG4 (PW package) may be left floating or connected to GND per TI's Pin Functions table - it is not electrically tied to any internal node. Its primary role is mechanical stability and thermal dissipation; TI does not specify minimum solder coverage or thermal resistance targets, and no electrical function depends on its connection state.
Can SN74LVC541APWRG4 drive a 50pF load while meeting timing specs?
Yes - TI specifies that SN74LVC541APWRG4 meets all datasheet timing and voltage specifications with loads ≤50pF, as stated in Section 8.2.1.1. Exceeding 50pF increases propagation delay and may violate VOL/VOH limits under heavy drive conditions; for larger loads, TI recommends verifying signal integrity via simulation or lab testing using the load circuit in Figure 6-1.
SN74LVC541APWRG4 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
SN74LVC541APWRG4 FAQ
1.How can I place an order for SN74LVC541APWRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC541APWRG4 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 SN74LVC541APWRG4 reliable?
The price and inventory of SN74LVC541APWRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC541APWRG4 is usually 5 days.
3.What payment methods are accepted for SN74LVC541APWRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC541APWRG4 transactions.
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4.How is shipping managed for SN74LVC541APWRG4?
SN74LVC541APWRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC541APWRG4 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 SN74LVC541APWRG4?
For technical support, including SN74LVC541APWRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC541APWRG4 requirements.
6.How does Aetrix verify that SN74LVC541APWRG4 is sourced from the original manufacturer or authorized distributors?
All SN74LVC541APWRG4 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 SN74LVC541APWRG4 meets industry standards.
7.What is the process for return or replacement of SN74LVC541APWRG4?
All SN74LVC541APWRG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC541APWRG4, 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 SN74LVC541APWRG4 part is unused and in its original packaging.
Return procedure for SN74LVC541APWRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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