My Inquiry
My Account
Texas Instruments SN74AC541QPWRQ1
- Part No.:
- SN74AC541QPWRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74AC541QPWRQ1.pdf
- Description:
- EIGHT-CHANNEL, 1.5-V TO 6-V, 24-
- Quantity:
- Payment:
- Shipping:
Inventory:1,725
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74AC541QPWRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive octal buffer/driver with dual active-low 3-state enable inputs (OE1, OE2), 1.5V–6V supply operation, ±24mA continuous output drive at 5V, 6ns max propagation delay (5V/50pF), and wettable-flank VQFN-20 packaging for AOI-compatible solder joint inspection. It functions as a bidirectional signal redriver in automotive body control modules.
For engineers reviewing the SN74AC541QPWRQ1 datasheet, SN74AC541QPWRQ1 pinout, SN74AC541QPWRQ1 application, or SN74AC541QPWRQ1 equivalent, key selection criteria include automotive temperature range (-40°C to +125°C), dual independent 3-state control logic, 50Ω transmission line drive capability, and wettable flank package support for automated optical inspection in high-reliability automotive PCB assembly.
Technical Context
The SN74AC541QPWRQ1 implements eight independent CMOS buffers with push-pull outputs and dual active-low 3-state enable inputs (OE1, OE2) requiring both to be low for output activation - enabling synchronized channel gating in safety-critical signal paths. Its balanced output structure supports symmetrical ±24mA sourcing/sinking at 5V with defined VOH/VOL across 1.5V–6V supply range.
Input voltage tolerance extends to 6V regardless of VCC, allowing level-shifting between mixed-supply domains. The device features standard CMOS inputs with ≤9pF input capacitance and clamp diodes rated for ±20mA input clamp current, supporting robust ESD resilience per AEC-Q100 HBM Level 2 (±2kV) and CDM Level C4B (±1kV).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5V to 6V - enables interoperability across 1.8V, 2.5V, 3.3V, and 5V logic domains without level shifters |
| Max Propagation Delay | 6ns at 5V/50pF - ensures timing compliance in high-speed digital backplanes and controller-to-peripheral interfaces |
| Output Drive (Continuous) | ±24mA at 5V - sustains stable logic levels driving multiple CMOS loads or 50Ω transmission lines |
| Operating Temperature | -40°C to +125°C (Grade 1) - certified for under-hood and powertrain applications per AEC-Q100 |
| Input Voltage Tolerance | Up to 6V independent of VCC - allows safe interfacing with higher-voltage sensors or legacy systems |
| ESD Rating (HBM) | ±2000V - meets AEC-Q100-002 requirement for automotive manufacturing and field reliability |
| Package Type | RKS (VQFN-20, 4.5mm × 2.5mm) with wettable flanks - supports AOI verification of side-solder fillets in automated SMT lines |
Pinout & Package
RKS package: 20-pin VQFN with 0.5mm pitch, 4.5mm × 2.5mm body size, thermal pad (connected to GND or left floating), and wettable flank leads for AOI-compliant solder joint inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OE1, OE2 | Active-low 3-state enable inputs | Both must be low to activate all eight outputs; provides redundant control for fail-safe gating |
| A1–A8 | Buffer input terminals | CMOS inputs tolerant to 6V; require termination to VCC/GND when unused to prevent oscillation |
| Y1–Y8 | Push-pull 3-state outputs | Drive 50Ω lines directly; high-impedance state isolates bus segments during controller reset or fault conditions |
| VCC | Positive supply | Supplies all eight buffers; decoupling capacitor required adjacent to pin for noise suppression |
| GND | Ground reference | Return path for all output sink current and supply leakage; must be low-impedance for EMI control |
| Thermal Pad | Exposed thermal interface | Connected to PCB ground plane to reduce junction-to-board thermal resistance (RθJB = 45.6°C/W) |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 3-state enables | OE1 and OE2 both low required for output activation - prevents unintended bus contention during partial system resets |
| Wettable flank QFN package | RKS package with dimpled lead edges - enables reliable automatic optical inspection of solder fillets on production lines |
| 50Ω transmission line drive | Capable of driving controlled-impedance traces without external series termination - reduces BOM count in ADAS sensor interfaces |
| Wide 1.5V–6V supply range | Operates across automotive sub-system voltages (e.g., 1.8V microcontrollers, 3.3V CAN transceivers, 5V analog sensors) |
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C ambient operation with HBM ±2kV and CDM ±1kV ESD ratings - suitable for powertrain and chassis ECUs |
Applications
| Body Control Module Signal Redriving | Instrument Cluster Display Interface |
|---|---|
Use Scenario: Redriving multiplexed switch signals from a central body controller to door modules over 15cm PCB traces. IC Role / Device Role / Timing Role: Octal buffer isolating and strengthening digital control signals while maintaining timing integrity across distributed nodes. Use Value: Eliminates signal degradation and timing skew using 6ns propagation delay and 50Ω drive capability - ensures deterministic actuation of window lifters and mirror controls. |
Use Scenario: Driving parallel data lines from a graphics controller to an LCD display subsystem in a digital instrument cluster. IC Role / Device Role / Timing Role: Level-translating and buffering 8-bit RGB interface signals between 3.3V GPU and 5V display driver ICs. Use Value: Input tolerance up to 6V allows direct connection to 5V display logic without external level shifters - simplifies layout and improves EMI margin. |
| Powertrain Sensor Data Conditioning | ADAS Camera Interface Buffering |
Use Scenario: Isolating diagnostic communication lines between engine control unit and OBD-II port during firmware updates. IC Role / Device Role / Timing Role: 3-state buffer enabling hot-swappable diagnostics by placing outputs in high-Z during reprogramming sequences. Use Value: Dual OE pins allow coordinated disable of all channels during controller reset - prevents bus contention and protocol corruption on ISO 9141 lines. |
Use Scenario: Buffering MIPI CSI-2 clock and data lanes between image sensor and SoC in surround-view camera systems. IC Role / Device Role / Timing Role: Low-skew redriver preserving edge integrity on high-speed serial links operating at 100MHz+. Use Value: 6ns tpd and matched channel delays minimize inter-pair skew - maintains pixel alignment and reduces frame jitter in real-time video streams. |
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 |
|---|---|---|---|
| SN74LVC541AQPWRQ1 | Lower drive (±24mA @ 3.3V only); 1.65V–3.6V supply range; identical pinout and AEC-Q100 Grade 1 rating | Restricted to 3.3V-only systems; unsuitable for 5V sensor interfaces or mixed-voltage backplanes | Select when cost optimization is prioritized and full 1.5V–6V range is unnecessary |
| MC74VHC541DTG | Industrial temp range only (-40°C to +85°C); no AEC-Q100 qualification; same 2V–5.5V supply and ±8mA drive | Not qualified for automotive use; lacks wettable flank package and Grade 1 thermal validation | Acceptable for non-safety-critical infotainment peripherals where automotive qualification is waived |
Compared with SN74AC541QPWRQ1, SN74LVC541AQPWRQ1 offers lower power but narrower voltage range, while MC74VHC541DTG lacks automotive qualification and wettable flank support - making SN74AC541QPWRQ1 the only option meeting full AEC-Q100 Grade 1, wide-VCC, and AOI-ready requirements.
Availability
SN74AC541QPWRQ1 is available at Aetrix Electronics and suitable for automotive body control modules, instrument cluster interfaces, powertrain diagnostics, and ADAS camera subsystems requiring stable component supply across extended temperature and high-reliability manufacturing environments.
Supply support for SN74AC541QPWRQ1 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 automotive-grade logic solutions with over 50 years of automotive qualification experience.
The SN74AC541QPWRQ1 belongs to TI's automotive-qualified AC logic family, designed specifically for signal integrity preservation, ESD robustness, and thermal reliability in vehicle electronic control units and distributed sensor networks.
FAQ
What is the maximum continuous output current specification for SN74AC541QPWRQ1 at 5V?
The SN74AC541QPWRQ1 supports ±24mA continuous output current per channel at 5V supply, as specified in Section 5.3 Recommended Operating Conditions and verified in Electrical Characteristics Table 5.5. This drive strength enables direct interfacing with 50Ω transmission lines and multiple CMOS loads without external buffers. Exceeding this value continuously risks thermal overstress beyond the device's RθJA of 72.9°C/W in the RKS package.
Does SN74AC541QPWRQ1 support operation at 1.8V supply voltage?
Yes, SN74AC541QPWRQ1 operates across 1.5V to 6V, including 1.8V. At 1.8V, it delivers 1.44V VOH (min) at -1mA and 0.36V VOL (max) at 1mA, with 10.1ns tPLH propagation delay (typical). This makes SN74AC541QPWRQ1 compatible with modern low-voltage microcontrollers and FPGAs in automotive domain controllers where power efficiency is critical.
How are the two output enable pins (OE1 and OE2) used in SN74AC541QPWRQ1?
In SN74AC541QPWRQ1, 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 dual-enable architecture provides redundancy for fail-safe bus isolation - for example, one OE pin can be controlled by a system MCU while the other connects to a hardware watchdog signal, ensuring outputs disable during lockup events.
Is the thermal pad on the SN74AC541QPWRQ1 RKS package required to be connected to ground?
The thermal pad on the SN74AC541QPWRQ1 RKS package may be connected to GND or left floating per datasheet guidance. However, connecting it to a solid GND plane significantly reduces junction-to-board thermal resistance (RθJB = 45.6°C/W vs. >75°C/W unconnected), improving thermal performance during sustained ±24mA output operation. TI recommends GND connection for automotive applications with ambient temperatures up to +125°C.
Can SN74AC541QPWRQ1 drive a 50Ω transmission line without external series termination resistors?
Yes, SN74AC541QPWRQ1 is explicitly characterized to drive 50Ω transmission lines, as stated in its Features section and validated by its ±24mA output drive and 6ns propagation delay. When driving such lines, the device's inherent output impedance and edge rate support clean signal integrity up to ~100MHz without added series resistors - reducing component count in ADAS sensor and camera interface designs.
SN74AC541QPWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AC
- Package/Case:
- 20-TSSOP (0.173", 4.40mm 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:
- 1.5V ~ 6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
SN74AC541QPWRQ1 FAQ
1.How can I place an order for SN74AC541QPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AC541QPWRQ1 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 SN74AC541QPWRQ1 reliable?
The price and inventory of SN74AC541QPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AC541QPWRQ1 is usually 5 days.
3.What payment methods are accepted for SN74AC541QPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AC541QPWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AC541QPWRQ1?
SN74AC541QPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AC541QPWRQ1 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 SN74AC541QPWRQ1?
For technical support, including SN74AC541QPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AC541QPWRQ1 requirements.
6.How does Aetrix verify that SN74AC541QPWRQ1 is sourced from the original manufacturer or authorized distributors?
All SN74AC541QPWRQ1 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 SN74AC541QPWRQ1 meets industry standards.
7.What is the process for return or replacement of SN74AC541QPWRQ1?
All SN74AC541QPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with SN74AC541QPWRQ1, 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 SN74AC541QPWRQ1 part is unused and in its original packaging.
Return procedure for SN74AC541QPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74AC541QPWRQ1 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…
