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Texas Instruments SN74ACT7541QDGSRQ1
- Part No.:
- SN74ACT7541QDGSRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 20-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
SN74ACT7541QDGSRQ1.pdf
- Description:
- AUTOMOTIVE EIGHT-CHANNEL 4.5V-TO
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
SN74ACT7541QDGSRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive octal buffer with open-drain outputs, operating from 4.5V to 5.5V, delivering up to 24mA continuous output drive at 5V and supporting 75mA short-burst drive, used for LED indicator control, relay switching, and level-shifting in vehicle body electronics.
For engineers reviewing the SN74ACT7541QDGSRQ1 datasheet, SN74ACT7541QDGSRQ1 pinout, SN74ACT7541QDGSRQ1 application, or SN74ACT7541QDGSRQ1 equivalent, key selection considerations include its dual active-low output enable (OE1/OE2), TTL-compatible inputs, 9.6ns max propagation delay at 5V/50pF, VSSOP-20 wettable-flank–compatible package, and automotive-grade thermal performance across –40°C to +125°C.
Technical Context
This device implements eight independent non-inverting buffers sharing two active-low output enable inputs (OE1 and OE2), requiring both to be low for output activation-enabling synchronized channel control in safety-critical subsystems. Its open-drain CMOS outputs support wired-AND configurations and external pull-up–based level translation.
The SN74ACT7541QDGSRQ1 uses TTL-compatible input thresholds (VIH = 2V min, VIL = 0.8V max at 4.5–5.5V), supports 50Ω transmission line driving, and features clamping diodes on all I/O pins per AEC-Q100 requirements, with HBM ESD rating ±2000V and CDM rating ±1000V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5V to 5.5V - ensures compatibility with standard automotive 5V rail and tolerates battery transients. |
| Operating Temperature | –40°C to +125°C - meets AEC-Q100 Grade 1 requirements for under-hood and cabin modules. |
| Output Drive (Continuous) | 24mA at 5V - sufficient to directly drive LEDs or small relays without external amplification. |
| Propagation Delay | 9.6ns max (VCC = 5V, CL = 50pF) - enables timing-critical control in fast-response systems like lighting or door lock actuation. |
| Input Compatibility | TTL-compatible (VIH ≥ 2V, VIL ≤ 0.8V) - allows seamless interfacing with legacy microcontrollers and discrete logic in mixed-voltage domains. |
| ESD Rating | HBM ±2000V, CDM ±1000V - satisfies automotive ESD robustness requirements for assembly and field operation. |
| Package | VSSOP-20 (DGS), 5.1mm × 4.9mm body - compact footprint ideal for space-constrained ECUs with automated optical inspection support. |
Pinout & Package
VSSOP-20 (DGS) package with 5.1mm × 4.9mm body size and wettable flanks for enhanced solder joint inspection. Thermal pad not present in DGS variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OE1, OE2 | Active-low output enable inputs | Both must be low to activate all eight outputs; enables fail-safe shutdown via redundant control signals. |
| A1–A8 | Buffer inputs | Eight independent TTL-compatible digital inputs accepting 0.8V/2V logic thresholds. |
| Y1–Y8 | Open-drain outputs | Each sinks current only; requires external pull-up for HIGH state-supports level shifting and wired-AND bus topologies. |
| VCC | Positive supply | Single 4.5–5.5V rail powers all logic and output stages; decoupling capacitor required near pin. |
| GND | Ground reference | Common return path for supply and all output sink currents; must handle up to 200mA total continuous current. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use from –40°C to +125°C ambient, enabling deployment in engine control, lighting, and power distribution modules. |
| Wettable flank–compatible VSSOP | DGS package supports AOI of side-solder fillets, improving manufacturing yield and reliability verification in high-volume automotive production. |
| Dual independent output enables | OE1 and OE2 provide redundancy or hierarchical control-e.g., OE1 from MCU, OE2 from safety monitor-enhancing functional safety architecture. |
| 75mA short-burst output capability | Allows brief overdrive for capacitive loads or relay coil inrush, extending usability beyond steady-state 24mA limits without external drivers. |
| Clamp diode protection | Integrated input/output clamping diodes limit transient overvoltage to ±0.5V beyond rails, reducing need for external TVS in cost-sensitive nodes. |
Applications
| LED Indicator Control | Automotive Relay Interface |
|---|---|
Use Scenario: Driving multiple status LEDs (e.g., door ajar, seatbelt, hazard) in a central body controller. IC Role / Device Role / Timing Role: Octal buffer provides isolated, current-limited open-drain outputs; each Yx drives one LED cathode with external anode pull-up. Use Value: Eliminates need for discrete transistors; 24mA per channel supports bright LEDs at full brightness without thermal derating. | Use Scenario: Controlling 12V automotive relays (e.g., HVAC blower, headlight dimming) from a 5V microcontroller. IC Role / Device Role / Timing Role: Acts as level-shifting driver between low-voltage logic and relay coil; open-drain outputs interface with external 12V pull-up and flyback diode. Use Value: Enables direct MCU control without optocouplers or MOSFET gate drivers; 75mA burst rating handles relay coil inrush. |
| Wired-AND Bus Signaling | Level Translation Interface |
Use Scenario: Implementing fault-reporting bus where multiple ECUs pull down a shared diagnostic line. IC Role / Device Role / Timing Role: Each SN74ACT7541QDGSRQ1 output connects to common bus; any enabled channel pulls line LOW (wired-AND logic). Use Value: Supports multi-source fault signaling with no contention risk; propagation delay <10ns ensures deterministic bus arbitration timing. | Use Scenario: Translating 3.3V logic signals from infotainment SoC to 5V CAN transceiver control lines. IC Role / Device Role / Timing Role: Buffers 3.3V inputs and outputs open-drain signals pulled to 5V, translating voltage domain while preserving signal integrity. Use Value: Achieves bidirectional level shift using single device; TTL-compatible inputs accept 3.3V logic highs without external biasing. |
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 |
|---|---|---|---|
| SN74LVC8T245RHLR | 3.3V/5V dual-supply translator with configurable direction; not open-drain; higher speed (tPD = 3.8ns). | Requires separate direction control; unsuitable for wired-AND or passive pull-up topologies. | Select when bidirectional level translation is needed, not open-drain drive. |
| SN74AHC1G07DBVR | Single-channel open-drain buffer; same logic family but discrete channel count; smaller SOT-23 package. | Lacks octal integration; requires eight devices plus board area for equivalent functionality. | Select for ultra-low-cost, low-channel-count designs where space permits discrete implementation. |
Compared with SN74LVC8T245RHLR and SN74AHC1G07DBVR, the SN74ACT7541QDGSRQ1 uniquely combines automotive qualification, octal integration, true open-drain outputs, and dual enable control-making it optimal for consolidated, safety-aware, wired-AND–capable automotive I/O expansion.
Availability
SN74ACT7541QDGSRQ1 is available at Aetrix Electronics and suitable for automotive body control modules, lighting systems, and power distribution units requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant sourcing.
Supply support for SN74ACT7541QDGSRQ1 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 ICs, with decades of automotive qualification expertise and broad foundry partnerships.
The SN74ACT7541QDGSRQ1 belongs to TI's automotive logic portfolio, designed specifically for robust, low-latency I/O buffering in harsh-temperature vehicle subsystems where reliability and AEC-Q100 compliance are mandatory.
FAQ
What is the maximum continuous output current per channel for the SN74ACT7541QDGSRQ1?
The SN74ACT7541QDGSRQ1 supports 24mA continuous output sink current per channel at VCC = 5V, as specified in the Recommended Operating Conditions table. This value is validated across the full –40°C to +125°C temperature range and forms the basis for thermal design in sustained-load applications such as LED driving or relay hold states. Exceeding this current continuously may cause junction temperature rise beyond safe limits.
Does the SN74ACT7541QDGSRQ1 support wired-AND bus configurations?
Yes, the SN74ACT7541QDGSRQ1 supports wired-AND configurations because all eight outputs are open-drain. Multiple outputs can be connected to a common bus with a single external pull-up resistor, allowing any enabled channel to pull the bus LOW. This behavior is explicitly confirmed in the Functional Block Diagram and Feature Description sections of the datasheet, and is commonly used for fault-signaling buses in automotive networks.
What is the purpose of the dual output enable inputs (OE1 and OE2) on the SN74ACT7541QDGSRQ1?
The dual active-low output enables OE1 and OE2 require both to be LOW for outputs to become active-providing hardware-level AND logic for output control. This design enables functional safety schemes, such as connecting OE1 to the main MCU and OE2 to an independent safety monitor, ensuring outputs disable if either control path fails. The function table in Section 7.4 confirms that only the L/L combination enables Yx outputs.
Is the SN74ACT7541QDGSRQ1 pin-compatible with other packages in the same family?
No, the SN74ACT7541QDGSRQ1 (VSSOP-20/DGS) is not pin-compatible with the RKS (VQFN) or PW (TSSOP) variants of the SN74ACT7541-Q1 family. While all share identical logic functionality and pin numbering, the DGS package has different pad layout, thermal pad absence, and mechanical dimensions. PCB layout must be specific to the DGS footprint; migration requires redesign, though schematic connectivity remains identical.
What is the recommended pull-up resistor value for SN74ACT7541QDGSRQ1 open-drain outputs?
A 10kΩ pull-up resistor is recommended for SN74ACT7541QDGSRQ1 open-drain outputs when interfacing with standard 5V logic or driving LEDs, balancing speed, power consumption, and noise immunity. This value is cited in the Feature Description section for general-purpose use and aligns with typical bus loading requirements. For higher-speed or lower-power applications, values from 4.7kΩ to 100kΩ may be selected based on load capacitance and VOL margin calculations per the Electrical Characteristics table.
SN74ACT7541QDGSRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ACT
- Package/Case:
- 20-TFSOP (0.118", 3.00mm 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, 24mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-VSSOP
SN74ACT7541QDGSRQ1 FAQ
1.How can I place an order for SN74ACT7541QDGSRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ACT7541QDGSRQ1 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 SN74ACT7541QDGSRQ1 reliable?
The price and inventory of SN74ACT7541QDGSRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ACT7541QDGSRQ1 is usually 5 days.
3.What payment methods are accepted for SN74ACT7541QDGSRQ1?
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4.How is shipping managed for SN74ACT7541QDGSRQ1?
SN74ACT7541QDGSRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ACT7541QDGSRQ1 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 SN74ACT7541QDGSRQ1?
For technical support, including SN74ACT7541QDGSRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ACT7541QDGSRQ1 requirements.
6.How does Aetrix verify that SN74ACT7541QDGSRQ1 is sourced from the original manufacturer or authorized distributors?
All SN74ACT7541QDGSRQ1 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 SN74ACT7541QDGSRQ1 meets industry standards.
7.What is the process for return or replacement of SN74ACT7541QDGSRQ1?
All SN74ACT7541QDGSRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with SN74ACT7541QDGSRQ1, 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 SN74ACT7541QDGSRQ1 part is unused and in its original packaging.
Return procedure for SN74ACT7541QDGSRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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