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Texas Instruments SN74AC7541QPWRQ1
- Part No.:
- SN74AC7541QPWRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74AC7541QPWRQ1.pdf
- Description:
- AUTOMOTIVE EIGHT-CHANNEL 1.5V-TO
- Quantity:
- Payment:
- Shipping:
Inventory:2,960
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Product details
Overview
SN74AC7541QPWRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive octal buffer IC with open-drain CMOS outputs, 1.5V–6V supply range, 24mA continuous output drive at 5V, 11ns max propagation delay (5V/50pF), and dual active-low output enable (OE1/OE2) for simultaneous high-impedance control - used in LED driver circuits and level-shifting interfaces in vehicle body control modules.
For engineers reviewing the SN74AC7541QPWRQ1 datasheet, SN74AC7541QPWRQ1 pinout, SN74AC7541QPWRQ1 application, or SN74AC7541QPWRQ1 equivalent, key selection criteria include open-drain output compatibility with 50Ω transmission lines, wettable-flank QFN package suitability for AOI inspection, -40°C to +125°C operation, and dual OE logic for fail-safe bus isolation in automotive subsystems.
Technical Context
This device implements eight independent non-inverting buffers with open-drain outputs, where both OE1 and OE2 must be low to enable output sinking. The shared control logic ensures synchronized channel disablement, eliminating partial-output glitches during enable transitions.
Its CMOS input structure accepts voltages up to 6V regardless of VCC, while output voltage compliance extends to 6V under no-load conditions. Thermal design leverages RKS-package-specific junction-to-board resistance of 40.4°C/W and wettable flanks for reliable solder joint inspection in safety-critical automotive PCB assemblies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5V to 6V - supports direct interface with 1.8V, 2.5V, 3.3V, and 5V logic domains without level shifters |
| Output Drive (Continuous) | 24mA at 5V - sufficient to sink standard indicator LEDs or drive moderate capacitive loads (≤50pF) |
| Max Propagation Delay | 11ns at 5V/50pF - enables timing-critical signal buffering in CAN/LIN subsystem interconnects |
| Operating Temperature | -40°C to +125°C - meets AEC-Q100 Grade 1 requirements for under-hood and cabin electronics |
| ESD Rating (HBM) | ±2000V - exceeds automotive ESD immunity requirements per ISO 10605 |
| Input Voltage Tolerance | Up to 6V - allows interfacing with higher-voltage sensors or legacy systems without external clamping |
| Output Configuration | Open-drain - enables wired-AND bus architectures and flexible pull-up voltage selection (e.g., 3.3V on 5V-tolerant node) |
Pinout & Package
SN74AC7541QPWRQ1 is packaged in a 20-pin RKS (VQFN) wettable-flank QFN measuring 4.5mm × 2.5mm body size, with exposed thermal pad (connectable to GND or left floating). This package supports automated optical inspection (AOI) via side-fillet formation and provides enhanced thermal performance (RθJB = 40.4°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OE1, OE2 | Active-low output enable inputs | Both must be low to activate outputs; enables fail-safe bus isolation when either is high |
| A1–A8 | Buffer input terminals | CMOS inputs tolerant to 6V; require termination to VCC/GND if unused to prevent floating states |
| Y1–Y8 | Open-drain buffer outputs | Sink-only outputs; require external pull-up for HIGH state; support wired-AND and bus arbitration |
| VCC | Positive supply | Supplies internal logic; bypass capacitor (0.1µF) required adjacent to pin for noise suppression |
| GND | Ground reference | Return path for all output sink current and supply current; must handle ≥24mA per active channel |
| Thermal Pad | Exposed copper pad | Improves heat dissipation; may be connected to GND plane for electrical and thermal benefit |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C ambient operation in automotive powertrain and chassis systems |
| Wettable-flank QFN (RKS) | Enables reliable AOI-based solder-joint inspection critical for zero-defect manufacturing in Tier 1 suppliers |
| Dual independent OE inputs | Provides redundant enable control - system can force high-Z state via either OE1 or OE2 for functional safety |
| 50Ω transmission line drive | Supports clean signal edge integrity on controlled-impedance traces in infotainment and ADAS sensor interfaces |
| 6V-tolerant inputs | Eliminates need for external level translators when interfacing with 5V analog sensors or legacy microcontrollers |
Applications
| LED Driver Interface | Level-Shifting Bus |
|---|---|
|
Use Scenario: Driving discrete status LEDs in instrument cluster PCBs with variable supply rails (3.3V or 5V). IC Role / Device Role / Timing Role: Octal open-drain buffer sinks LED current; dual OE allows centralized dimming or fault shutdown. Use Value: Eliminates discrete transistors per LED; 24mA drive supports common-anode configurations without external drivers. |
Use Scenario: Interfacing 3.3V microcontroller GPIOs to 5V I²C-compatible diagnostic buses in telematics units. IC Role / Device Role / Timing Role: Acts as bidirectional level shifter using open-drain topology and external pull-ups. Use Value: Enables voltage-domain translation without direction control pins; 11ns tPZL preserves I²C timing margins. |
| Wired-AND Fault Signaling | Body Control Module Output |
|
Use Scenario: Aggregating fault signals from multiple door latch sensors onto a shared diagnostic line. IC Role / Device Role / Timing Role: Each sensor drives one A/Y channel; outputs wired together form hardware OR logic. Use Value: Single-wire fault reporting reduces harness weight; high-Z state prevents contention during normal operation. |
Use Scenario: Controlling solenoid valves in HVAC actuators requiring 5V-tolerant, current-limited switching. IC Role / Device Role / Timing Role: Buffers MCU PWM signals to valve drivers; open-drain outputs interface with external FET gate drivers. Use Value: 75mA short-burst capability handles inrush current during valve coil energization without latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal open-drain buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC8T245PWRE4 | Configurable dual-supply translator (A/B side); push-pull + open-drain selectable per channel | Requires separate VCCA/VCCB supplies; lacks automotive qualification | Preferred when bidirectional level shifting across mismatched voltage domains is required |
| MC74VHC125DTG | Quad non-inverting buffer with 3-state (not open-drain) outputs; 2V–5.5V supply | No inherent wired-AND capability; requires external pull-ups for HIGH state emulation | Used where tri-state bus sharing is needed instead of open-drain arbitration |
Compared with SN74AC7541QPWRQ1, SN74LVC8T245PWRE4 adds voltage translation flexibility but sacrifices AEC-Q100 compliance and increases BOM count; MC74VHC125DTG offers lower static current but cannot natively implement wired-AND logic or drive 50Ω lines with matched edge rates.
Availability
SN74AC7541QPWRQ1 is available at Aetrix Electronics and suitable for automotive body control modules, instrument cluster LED interfaces, and diagnostic bus level-shifting applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74AC7541QPWRQ1 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 company specializing in analog and embedded processing technologies, with leadership in automotive-grade logic, power management, and signal chain solutions.
SN74AC7541QPWRQ1 belongs to TI's automotive-qualified AC logic family, designed specifically for robust signal buffering in harsh-temperature vehicle subsystems where reliability, ESD immunity, and AOI-compatible packaging are mandatory.
FAQ
What is the maximum continuous output current rating for SN74AC7541QPWRQ1 at 5V?
The SN74AC7541QPWRQ1 supports 24mA continuous output current per channel at 5V supply, as specified in the Recommended Operating Conditions table. This value ensures stable operation into typical LED loads or 50Ω transmission lines without exceeding thermal limits or degrading VOL performance beyond 0.5V.
Does SN74AC7541QPWRQ1 support operation at 1.8V supply voltage?
Yes, SN74AC7541QPWRQ1 operates across 1.5V to 6V, including 1.8V. At 1.8V, it delivers 1mA output drive (IOL) with VOL ≤ 0.36V and maintains full logic functionality, making it compatible with modern low-voltage microcontrollers in automotive domain controllers.
How do the dual output enable inputs (OE1 and OE2) function in SN74AC7541QPWRQ1?
In SN74AC7541QPWRQ1, both OE1 and OE2 must be driven low simultaneously to enable output sinking. If either OE1 or OE2 is high, all eight outputs enter high-impedance state - providing redundant safety control ideal for ASIL-B-relevant subsystems where single-point failure must not compromise bus integrity.
Can SN74AC7541QPWRQ1 drive a 50Ω transmission line directly?
Yes, SN74AC7541QPWRQ1 is explicitly characterized to drive 50Ω transmission lines. Its output stage delivers fast edges with controlled slew rate, and its 11ns max tPD at 5V/50pF ensures signal fidelity on impedance-matched traces used in automotive sensor and communication interfaces.
Is the thermal pad on the RKS package of SN74AC7541QPWRQ1 required to be connected to ground?
No, the thermal pad on SN74AC7541QPWRQ1's RKS package may be connected to GND or left electrically floating. TI documentation states it should not be connected to any signal or supply other than GND; grounding improves thermal performance (RθJB = 40.4°C/W) and EMI suppression but is not mandatory for functionality.
SN74AC7541QPWRQ1 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:
- Open Drain
- Current - Output High, Low:
- -, 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
SN74AC7541QPWRQ1 FAQ
1.How can I place an order for SN74AC7541QPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AC7541QPWRQ1 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 SN74AC7541QPWRQ1 reliable?
The price and inventory of SN74AC7541QPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AC7541QPWRQ1 is usually 5 days.
3.What payment methods are accepted for SN74AC7541QPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AC7541QPWRQ1 transactions.
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4.How is shipping managed for SN74AC7541QPWRQ1?
SN74AC7541QPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AC7541QPWRQ1 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 SN74AC7541QPWRQ1?
For technical support, including SN74AC7541QPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AC7541QPWRQ1 requirements.
6.How does Aetrix verify that SN74AC7541QPWRQ1 is sourced from the original manufacturer or authorized distributors?
All SN74AC7541QPWRQ1 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 SN74AC7541QPWRQ1 meets industry standards.
7.What is the process for return or replacement of SN74AC7541QPWRQ1?
All SN74AC7541QPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with SN74AC7541QPWRQ1, 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 SN74AC7541QPWRQ1 part is unused and in its original packaging.
Return procedure for SN74AC7541QPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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