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Texas Instruments SN74ACT7541QPWRQ1
- Part No.:
- SN74ACT7541QPWRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74ACT7541QPWRQ1.pdf
- Description:
- AUTOMOTIVE EIGHT-CHANNEL 4.5V-TO
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
SN74ACT7541QPWRQ1 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 for relay control and LED indication in engine control units and body electronics.
For engineers reviewing the SN74ACT7541QPWRQ1 datasheet, SN74ACT7541QPWRQ1 pinout, SN74ACT7541QPWRQ1 application, or SN74ACT7541QPWRQ1 equivalent, key selection criteria include open-drain output compatibility with 50Ω transmission lines, dual active-low output enable (OE1/OE2) logic, TTL-compatible inputs, and thermal performance in TSSOP-20 packaging for under-hood environments.
Technical Context
The SN74ACT7541QPWRQ1 implements eight independent CMOS buffers with true open-drain outputs-each capable of sinking current without sourcing-enabling wired-AND bus configurations and level-shifting across voltage domains. Its dual OE inputs (OE1 and OE2) require both to be low for output activation, providing redundant enable control for safety-critical automotive subsystems.
It features TTL-compatible input thresholds (VIL ≤ 0.8V, VIH ≥ 2V at 4.5–5.5V), supports fast switching with tPHL/tPLH ≤ 9.6ns (5V, CL = 50pF), and includes internal clamp diodes for ±2000V HBM/±1000V CDM ESD protection per AEC-Q100 requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5V to 5.5V - ensures stable operation across automotive battery transients including cold-crank (4.5V) and load-dump (5.5V) |
| Output Drive (Continuous) | 24mA at 5V - sufficient to directly drive LEDs, small relays, or pull-down nodes in CAN/LIN interface biasing |
| Output Drive (Peak) | 75mA at 5V (short burst) - enables momentary actuation of higher-current loads like solenoid indicators |
| Propagation Delay | ≤9.6ns max (tPHL, 5V, CL = 50pF) - supports timing-critical signal buffering in real-time control loops |
| Operating Temperature | −40°C to +125°C (Grade 1) - qualified for placement near powertrain ECUs and ADAS domain controllers |
| ESD Rating | HBM ±2000V, CDM ±1000V - meets AEC-Q100-002/-011 for robustness in automated assembly and field operation |
| Input Compatibility | TTL-compatible (VIH ≥ 2V, VIL ≤ 0.8V) - interoperable with legacy microcontroller GPIOs and discrete logic without level shifters |
Pinout & Package
SN74ACT7541QPWRQ1 uses a 20-pin TSSOP (PW) package measuring 6.5mm × 6.4mm, with exposed thermal pad not present (RKS variant only). The package supports standard reflow profiles (MSL Level-1, 260°C peak) and is RoHS-compliant with NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OE1, OE2 | Active-low output enable inputs | Both must be low to activate all eight outputs; provides dual-redundant control for functional safety monitoring |
| A1–A8 | Buffer input terminals | Eight independent TTL-compatible CMOS inputs; each drives corresponding Yx output when enabled |
| Y1–Y8 | Open-drain output terminals | Sink-only outputs requiring external pull-up; support wired-AND, I²C-style bus sharing, and level translation |
| VCC | Positive supply | Single 4.5–5.5V rail powers all logic and output stages; decoupling with 0.1µF capacitor required near pin |
| GND | Ground reference | Common return for supply and all output sink current; must handle up to 200mA total continuous current |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C ambient operation with full electrical test coverage across temperature and life stress |
| Wettable flank capability | Not applicable to PW (TSSOP) package - feature exclusive to RKS (VQFN) variant per TI documentation |
| Open-drain output architecture | Enables bidirectional bus arbitration, voltage-level translation (e.g., 5V logic driving 3.3V node via pull-up), and fault-tolerant wired-AND signaling |
| Clamp diode protection | Integrated ±20mA input clamp and ±50mA output clamp diodes prevent damage from transient overvoltage events per AEC-Q100 stress testing |
| Low dynamic power consumption | Typical ICC = 2µA at 5.5V; CPD = 19pF - minimizes heat generation in densely packed automotive modules |
Applications
| LED Indicator Driving | Relay Control Interface |
|---|---|
Use Scenario: Driving status LEDs on instrument clusters or HVAC control panels where brightness must remain consistent across battery voltage variation. IC Role / Device Role / Timing Role: Octal open-drain buffer sinks LED current; dual OE inputs allow centralized shutdown during sleep mode. Use Value: Eliminates need for discrete transistors or current-limiting resistors per channel; 24mA drive supports high-brightness LEDs at full 5V supply. | Use Scenario: Controlling 12V automotive relays in door lock actuators or lighting modules using 5V MCU GPIOs. IC Role / Device Role / Timing Role: Acts as level-translating driver between low-voltage MCU and relay coil; open-drain output interfaces with external flyback diode and pull-up. Use Value: 75mA short-burst capability ensures reliable relay pull-in even under low-battery conditions (4.5V). |
| Level-Shifting Bus Interface | Wired-AND Fault Signaling |
Use Scenario: Interfacing 5V microcontroller I/O with 3.3V sensor buses (e.g., LIN transceiver biasing or diagnostic lines). IC Role / Device Role / Timing Role: Provides unidirectional level shift via open-drain output and external pull-up to 3.3V; TTL-compatible inputs accept 5V logic directly. Use Value: No external level shifter IC needed; propagation delay ≤9.6ns preserves timing margins in diagnostic response paths. | Use Scenario: Aggregating fault signals from multiple subsystems (e.g., airbag sensors, brake pressure monitors) onto a shared "system error" line. IC Role / Device Role / Timing Role: Each SN74ACT7541QPWRQ1 output connects to common bus; any device pulling low asserts fault condition (wired-AND logic). Use Value: Enables fail-safe fault reporting without centralized arbitration; high-impedance state prevents contention during normal operation. |
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 |
|---|---|---|---|
| SN74LVCH16244A-Q1 | 16-bit, 3-state non-inverting buffer; CMOS push-pull outputs (not open-drain); 1.65–3.6V supply | Requires external pull-ups for wired-AND; unsuitable for 5V systems or relay driving due to lower voltage rating | Select only if migrating to 3.3V domain and needing higher channel count with bus-hold inputs |
| SN74AHC1G07DBVRQ1 | Single-channel open-drain buffer; same 4.5–5.5V range and AEC-Q100 Grade 1; 8mA continuous drive | Limited to one channel per package; requires eight devices for octal functionality, increasing board area and BOM count | Choose for ultra-low-power single-signal isolation where space permits discrete implementation |
Compared with SN74LVCH16244A-Q1 and SN74AHC1G07DBVRQ1, the SN74ACT7541QPWRQ1 uniquely delivers octal open-drain drive at 5V with automotive-grade thermal and ESD robustness-making it the only direct solution for compact, high-current, fault-signaling applications in TSSOP-20 footprint.
Availability
SN74ACT7541QPWRQ1 is available at Aetrix Electronics and suitable for automotive body control modules, powertrain diagnostics, and ADAS sensor interface designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74ACT7541QPWRQ1 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 experience in high-reliability automotive electronics design and qualification.
The SN74ACT7541QPWRQ1 belongs to TI's automotive logic portfolio, engineered specifically for robust signal buffering in harsh-temperature vehicle subsystems where open-drain interfacing, ESD resilience, and AEC-Q100 compliance are mandatory.
FAQ
What is the maximum continuous output current specification for SN74ACT7541QPWRQ1?
The SN74ACT7541QPWRQ1 supports 24mA continuous output sink current per channel at 5V, as specified in Section 5.3 Recommended Operating Conditions. This value is validated across the full −40°C to +125°C operating range and forms the basis for thermal design in PCB layouts. Exceeding this limit continuously may cause junction temperature rise beyond safe limits.
Does SN74ACT7541QPWRQ1 support wired-AND bus configurations?
Yes, SN74ACT7541QPWRQ1 supports wired-AND configurations because all eight outputs are open-drain. Multiple outputs can be connected to a common bus with a single pull-up resistor; any device asserting low will dominate the bus state. This behavior is explicitly confirmed in Section 7.3.1 and Figure 7-1 of the datasheet.
What are the valid logic thresholds for TTL-compatible inputs on SN74ACT7541QPWRQ1?
The SN74ACT7541QPWRQ1 TTL-compatible inputs require VIH ≥ 2.0V and VIL ≤ 0.8V when VCC is between 4.5V and 5.5V, per Section 5.3 Recommended Operating Conditions. These thresholds ensure interoperability with legacy 5V TTL outputs and simplify interface design without external level shifting.
Can SN74ACT7541QPWRQ1 drive a 50Ω transmission line directly?
Yes, SN74ACT7541QPWRQ1 is explicitly rated to drive 50Ω transmission lines, as stated in the Features section. This capability enables clean signal edge integrity in short-haul interconnects such as diagnostic lines or sensor bias networks, provided layout follows controlled-impedance routing guidelines and avoids excessive capacitive loading (>50pF).
Is thermal pad connection required for SN74ACT7541QPWRQ1 in the PW (TSSOP) package?
No, the SN74ACT7541QPWRQ1 in the PW (TSSOP-20) package does not include a thermal pad. Thermal pad connectivity applies only to the RKS (VQFN) variant, as clarified in Table 4-1 Pin Functions footnote (2) and Package Information section. The PW package relies on standard lead-frame conduction and PCB copper area for thermal dissipation.
SN74ACT7541QPWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ACT
- 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, 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-TSSOP
SN74ACT7541QPWRQ1 FAQ
1.How can I place an order for SN74ACT7541QPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ACT7541QPWRQ1 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 SN74ACT7541QPWRQ1 reliable?
The price and inventory of SN74ACT7541QPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ACT7541QPWRQ1 is usually 5 days.
3.What payment methods are accepted for SN74ACT7541QPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ACT7541QPWRQ1 transactions.
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4.How is shipping managed for SN74ACT7541QPWRQ1?
SN74ACT7541QPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ACT7541QPWRQ1 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 SN74ACT7541QPWRQ1?
For technical support, including SN74ACT7541QPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ACT7541QPWRQ1 requirements.
6.How does Aetrix verify that SN74ACT7541QPWRQ1 is sourced from the original manufacturer or authorized distributors?
All SN74ACT7541QPWRQ1 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 SN74ACT7541QPWRQ1 meets industry standards.
7.What is the process for return or replacement of SN74ACT7541QPWRQ1?
All SN74ACT7541QPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with SN74ACT7541QPWRQ1, 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 SN74ACT7541QPWRQ1 part is unused and in its original packaging.
Return procedure for SN74ACT7541QPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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