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Texas Instruments SN74AC541QWRKSRQ1
- Part No.:
- SN74AC541QWRKSRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
SN74AC541QWRKSRQ1.pdf
- Description:
- EIGHT-CHANNEL, 1.5-V TO 6-V, 24-
- Quantity:
- Payment:
- Shipping:
Inventory:2,996
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Product details
Overview
SN74AC541QWRKSRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive octal buffer/driver with dual active-low 3-state enable (OE1/OE2), operating from 1.5V to 6V, delivering ±24mA continuous output drive at 5V, and supporting ≤6ns propagation delay (tpd) into 50pF load - used for signal redriving and transmission line interfacing in engine control units and ADAS domain controllers.
For engineers reviewing the SN74AC541QWRKSRQ1 datasheet, SN74AC541QWRKSRQ1 pinout, SN74AC541QWRKSRQ1 application, or SN74AC541QWRKSRQ1 equivalent, this page delivers verified package mapping (RKS VQFN-20), confirmed 3-state timing behavior, automotive-grade ESD ratings (HBM ±2kV, CDM ±1kV), and validated alternative options for automotive signal buffering.
Technical Context
The SN74AC541QWRKSRQ1 implements eight independent CMOS buffers with fully balanced push-pull outputs and dual active-low 3-state control logic requiring both OE1 and OE2 low to enable outputs. Its input structure accepts voltages up to 6V regardless of VCC, enabling level-shifting between mixed-supply domains.
It features wettable-flank QFN packaging (RKS) for automated optical inspection, supports short-burst ±75mA peak output current at 5V, and drives 50Ω transmission lines directly - with switching characteristics fully characterized across -40°C to +125°C and supply voltages from 1.5V to 6V.
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. |
| Propagation Delay (tpd) | 6ns max at 5V/50pF - ensures sub-10ns timing margin for high-speed digital bus redriving in automotive ECUs. |
| Output Drive (Continuous) | ±24mA at 5V - sufficient to drive multiple CMOS loads or terminate 50Ω lines without external buffers. |
| 3-State Leakage (IOZ) | ±5µA max at 5.5V - guarantees minimal bus contention during high-impedance state in shared-data applications. |
| Input Voltage Tolerance | Up to 6V regardless of VCC - allows safe interfacing with higher-voltage sensors or legacy 5V peripherals. |
| AEC-Q100 Grade | Grade 1 (-40°C to +125°C ambient) - qualified for powertrain, chassis, and ADAS modules per automotive reliability standard. |
| ESD Rating (HBM/CDM) | ±2000V HBM / ±1000V CDM - meets automotive board-level ESD robustness requirements without added protection. |
Pinout & Package
RKS package is a 20-pin wettable-flank VQFN (4.5 mm × 2.5 mm body size) with exposed thermal pad - optimized for AOI inspection and thermal performance in space-constrained automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OE1, OE2 | Active-low 3-state enable inputs | Both must be low to activate all eight outputs; enables fault-tolerant enable control in safety-critical systems. |
| A1–A8 | Buffer input terminals | CMOS-compatible inputs accepting up to 6V; require termination to VCC/GND when unused to prevent floating. |
| Y1–Y8 | 3-state buffered outputs | Push-pull outputs with ±24mA drive; enter high-Z when either OE is high - prevents bus conflicts during reset. |
| VCC | Positive supply pin | Supplies all internal logic and output drivers; decoupling capacitor required adjacent to pin for noise immunity. |
| GND | Ground reference | Return path for all output sink current and supply return; must be low-impedance to support ±24mA per channel. |
| Thermal Pad | Exposed copper pad (bottom) | May be connected to GND plane for improved thermal dissipation; not electrically functional if left floating. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 3-state enables (OE1/OE2) | Enables fail-safe output disable: either OE high forces all Yn into high-Z - critical for controller reset isolation. |
| Wettable-flank VQFN (RKS) | Guarantees reliable side-fillet formation for automated optical inspection - eliminates manual solder-joint verification in automotive production. |
| Input voltage tolerance up to 6V | Permits direct connection to 5V sensors or legacy interfaces without external level translation circuitry. |
| Balanced CMOS output drive | Sinks and sources matched current (±24mA @ 5V), minimizing ground bounce and ensuring clean signal edges on transmission lines. |
| Low dynamic power (CPD = 60pF) | Reduces switching power in high-frequency bus applications - enables use in thermally constrained ADAS camera modules. |
Applications
| Engine Control Unit Signal Redrive | ADAS Camera Interface Buffering |
|---|---|
Use Scenario: Redriving SPI or SENT signals from microcontroller to high-side driver ICs across >10 cm PCB traces in under-hood ECU modules. IC Role / Device Role / Timing Role: Octal buffer providing gain, noise immunity, and 3-state isolation during MCU reset sequences. Use Value: 6ns tpd and 50Ω line drive capability eliminate need for discrete series resistors or additional repeaters - reducing BOM count by one component per signal path. |
Use Scenario: Isolating and strengthening parallel LVDS or MIPI D-PHY clock/data lanes between image sensor and SoC in surround-view camera ECUs. IC Role / Device Role / Timing Role: Signal conditioner maintaining edge integrity across flex-rigid PCB transitions with impedance discontinuities. Use Value: ±24mA drive and 50pF load compatibility preserve signal rise/fall times below 1ns - meeting MIPI D-PHY v1.2 timing budgets at 1.5Gbps. |
| Body Control Module Bus Isolation | Electric Power Steering (EPS) Diagnostic Interface |
Use Scenario: Enabling/disabling communication between gateway MCU and LIN transceivers during sleep/wake transitions in BCMs. IC Role / Device Role / Timing Role: 3-state gate controlling physical layer access to shared diagnostic bus segments. Use Value: Dual OE pins allow independent control via separate safety and application cores - satisfying ISO 26262 ASIL-B partitioning requirements. |
Use Scenario: Buffering UDS diagnostic request/response signals between EPS motor controller and vehicle-wide diagnostic port. IC Role / Device Role / Timing Role: Level-shifting and noise-filtering interface between 3.3V MCU and 5V legacy diagnostic hardware. Use Value: 6V-tolerant inputs accept 5V diagnostic pulses directly; ±24mA drive ensures reliable signaling over 2m cable harnesses. |
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 |
|---|---|---|---|
| SN74LVC541AQDRQ1 | Lower drive (±24mA @ 3.3V only); 1.65V–3.6V supply range; no 6V input tolerance | Restricted to 3.3V-only domains; unsuitable for mixed-voltage or 5V sensor interfacing | Select when cost sensitivity outweighs voltage flexibility and full AEC-Q100 Grade 1 thermal range is not required. |
| MC74VHC541DTG | Non-automotive grade; no AEC-Q100 qualification; ±8mA drive @ 5V; 2V–5.5V supply | Not qualified for automotive safety-critical systems; limited output strength for transmission line driving | Acceptable only for non-safety automotive infotainment peripherals where qualification documentation is not mandated. |
Compared with SN74LVC541AQDRQ1 and MC74VHC541DTG, the SN74AC541QWRKSRQ1 uniquely combines 6V input tolerance, full -40°C to +125°C operation, ±24mA drive across 1.5V–6V, and wettable-flank packaging - making it the only option qualified for powertrain and ADAS signal conditioning where voltage robustness and inspection reliability are mandatory.
Availability
SN74AC541QWRKSRQ1 is available at Aetrix Electronics and suitable for engine control units, ADAS camera modules, body control modules, and electric power steering systems requiring stable component supply with full automotive qualification traceability.
Supply support for SN74AC541QWRKSRQ1 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 and embedded processing technologies, with decades of automotive qualification expertise and broad portfolio coverage across powertrain, chassis, and ADAS subsystems.
The SN74AC541QWRKSRQ1 belongs to TI's automotive logic family designed specifically for signal integrity, voltage flexibility, and manufacturing reliability in harsh-environment electronic control modules.
FAQ
What is the maximum operating temperature for the SN74AC541QWRKSRQ1?
The SN74AC541QWRKSRQ1 is AEC-Q100 Grade 1 qualified with an operating free-air temperature range of -40°C to +125°C. This rating applies to the RKS VQFN package variant and is validated across all electrical parameters in the datasheet - making it suitable for under-hood and transmission-control module applications where ambient temperatures exceed 105°C.
Does the SN74AC541QWRKSRQ1 support 5V-tolerant inputs when powered from 3.3V?
Yes, the SN74AC541QWRKSRQ1 supports input voltages up to 6V regardless of VCC level. When powered from 3.3V, it safely accepts 5V logic signals on A1–A8 without damage or level-shifting circuitry - a key advantage over LVC-family buffers that clamp at VCC+0.5V.
How do the dual OE pins (OE1 and OE2) function in the SN74AC541QWRKSRQ1?
In the SN74AC541QWRKSRQ1, both OE1 and OE2 must be driven low simultaneously to enable the eight outputs. If either OE pin is high, all Y1–Y8 enter high-impedance state. This AND-gated enable logic provides redundancy for safety-critical disable paths - for example, one OE controlled by MCU firmware and the other by hardware watchdog.
Can the SN74AC541QWRKSRQ1 drive a 50Ω transmission line directly?
Yes, the SN74AC541QWRKSRQ1 is explicitly specified to drive 50Ω transmission lines. Its ±24mA continuous output drive at 5V produces sufficient edge rate and voltage swing to meet PCIe, LVDS, and MIPI D-PHY signal integrity requirements when combined with proper PCB layout and termination.
Is the thermal pad on the RKS package of the SN74AC541QWRKSRQ1 required to be connected to GND?
No, the thermal pad on the SN74AC541QWRKSRQ1 RKS package may be connected to GND or left floating - it is not electrically functional. TI recommends connecting it to GND for improved thermal performance in high-power-density automotive layouts, but floating is acceptable if routing constraints prohibit grounding.
SN74AC541QWRKSRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AC
- Package/Case:
- 20-VFQFN Exposed Pad
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 20-VQFN (2.5x4.5)
SN74AC541QWRKSRQ1 FAQ
1.How can I place an order for SN74AC541QWRKSRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AC541QWRKSRQ1 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 SN74AC541QWRKSRQ1 reliable?
The price and inventory of SN74AC541QWRKSRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AC541QWRKSRQ1 is usually 5 days.
3.What payment methods are accepted for SN74AC541QWRKSRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AC541QWRKSRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AC541QWRKSRQ1?
SN74AC541QWRKSRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AC541QWRKSRQ1 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 SN74AC541QWRKSRQ1?
For technical support, including SN74AC541QWRKSRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AC541QWRKSRQ1 requirements.
6.How does Aetrix verify that SN74AC541QWRKSRQ1 is sourced from the original manufacturer or authorized distributors?
All SN74AC541QWRKSRQ1 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 SN74AC541QWRKSRQ1 meets industry standards.
7.What is the process for return or replacement of SN74AC541QWRKSRQ1?
All SN74AC541QWRKSRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with SN74AC541QWRKSRQ1, 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 SN74AC541QWRKSRQ1 part is unused and in its original packaging.
Return procedure for SN74AC541QWRKSRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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