SN74AHC9541-Q1 - Automotive Octal Buffer with Schmitt-Trigger | TI
MPN: SN74AHC9541-Q1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.85 | $0.85 |
| 10 | $0.76 | $7.60 |
| 100 | $0.61 | $61.00 |
| 500 | $0.52 | $260.00 |
| 1,000 | $0.43 | $430.00 |
Drop-in alternatives for SN74AHC9541-Q1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
SN74AHCT9541-Q1
β Drop-Inπ Reference alternative (not in catalog)
SN74AHC9541
β Drop-Inπ Reference alternative (not in catalog)
SN74AHC9541QDGSRQ1
β‘ Same Packageπ Reference alternative (not in catalog)
SN74AHC9541QPWRQ1
β‘ Same Packageπ Reference alternative (not in catalog)
74AHC541-Q100
β‘ Same Packageπ Reference alternative (not in catalog)
SN74AHC9541-Q1 Maximum Ratings & Electrical Characteristics
| Supply Voltage Range | 2 V to 5.5 V |
| Number of Channels | 8 |
| Output Type | 3-State |
| Input Type | Schmitt-Trigger |
| Logic Family | AHC |
| Propagation Delay Time | [DATA_NEEDED: Propagation Delay Time] |
| Maximum Output Current | [DATA_NEEDED: Maximum Output Current] |
| Operating Temperature Range | -40Β°C to 125Β°C |
| Package Type | Wettable-Flank QFN |
| Mounting Type | Surface Mount |
| Qualification | AEC-Q100 |
| RoHS Status | Compliant |
| Output Enable | Active Low (OE1, OE2) |
| Maximum Capacitive Load | 50 pF |
| Number of Elements | 1 |
| Bits per Element | 8 |
SN74AHC9541-Q1 Pin Configuration
| Pin 1 | OE1 β Output enable 1 (active low) |
| Pin 2 | A1 β Input 1 |
| Pin 3 | Y1 β Output 1 |
| Pin 4 | A2 β Input 2 |
| Pin 5 | Y2 β Output 2 |
| Pin 6 | A3 β Input 3 |
| Pin 7 | Y3 β Output 3 |
| Pin 8 | A4 β Input 4 |
| Pin 9 | Y4 β Output 4 |
| Pin 10 | GND β Ground |
| Pin 11 | Y5 β Output 5 |
| Pin 12 | A5 β Input 5 |
| Pin 13 | Y6 β Output 6 |
| Pin 14 | A6 β Input 6 |
| Pin 15 | Y7 β Output 7 |
| Pin 16 | A7 β Input 7 |
| Pin 17 | Y8 β Output 8 |
| Pin 18 | A8 β Input 8 |
| Pin 19 | OE2 β Output enable 2 (active low) |
| Pin 20 | VCC β Power supply |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
SN74AHC9541-Q1 is suitable for 6 applications: Automotive Body Control Module, Infotainment System, Advanced Driver Assistance Systems (ADAS), Industrial Automation, Communication Interfaces, Portable Electronics.
Automotive Body Control Module
The SN74AHC9541-Q1 is ideal for automotive body control modules where reliable signal buffering and noise immunity are critical. Its Schmitt-trigger inputs clean up noisy signals from switches and sensors, while the 3-state outputs allow bus isolation. The AEC-Q100 qualification ensures operation in harsh automotive environments, and the wettable-flank QFN package enhances solder joint reliability for long-term durability.
Recommended
Infotainment System
In infotainment systems, the SN74AHC9541-Q1 buffers signals between the main processor and peripheral interfaces, ensuring clean data transmission. Its wide supply voltage range (2V to 5.5V) supports both 3.3V and 5V logic, and the Schmitt-trigger inputs reject noise from long PCB traces. The 3-state outputs enable bus sharing, reducing component count and simplifying design.
Recommended
Advanced Driver Assistance Systems (ADAS)
The SN74AHC9541-Q1 is used in ADAS to buffer sensor data and control signals, where signal integrity is paramount. Its Schmitt-trigger inputs provide hysteresis, preventing false triggering from noisy sensor outputs. The automotive qualification and wide temperature range (-40Β°C to 125Β°C) ensure reliable operation in extreme conditions, and the 3-state outputs allow safe isolation during system resets.
Recommended
Industrial Automation
In industrial automation, the SN74AHC9541-Q1 buffers signals from sensors and actuators, providing noise immunity and signal conditioning. Its wide supply voltage range allows integration into various control systems, and the Schmitt-trigger inputs handle slow or noisy signals from industrial environments. The 3-state outputs enable bus isolation, preventing conflicts in multi-drop configurations.
Recommended
Communication Interfaces
The SN74AHC9541-Q1 is used in communication interfaces to buffer data lines and provide signal conditioning. Its Schmitt-trigger inputs clean up noisy signals from long cables, and the 3-state outputs allow multiple devices to share a common bus. The device operates over a wide voltage range, making it compatible with various logic levels in communication systems.
Recommended
Portable Electronics
In portable electronics, the SN74AHC9541-Q1 provides low-power signal buffering with a wide supply voltage range, making it suitable for battery-powered devices. Its Schmitt-trigger inputs improve noise immunity, and the small wettable-flank QFN package saves board space. The 3-state outputs help manage power consumption by disabling unused channels.
Recommended
Recommended Products Summary
Engineering reference data for SN74AHC9541-Q1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SN74AHCT9541-Q1 | SN74AHC9541 | SN74AHC9541QDGSRQ1 | SN74AHC9541QPWRQ1 |
|---|---|---|---|---|---|
| Package | Wettable-Flank QFN | Wettable-Flank QFN | Wettable-Flank QFN | 20-VSSOP | 20-TSSOP |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Supply Voltage Range | 2V to 5.5V | 2V to 5.5V | 2V to 5.5V | 2V to 5.5V | 2V to 5.5V |
| Input Type | Schmitt-Trigger (CMOS) | Schmitt-Trigger (TTL) | Schmitt-Trigger (CMOS) | Schmitt-Trigger (CMOS) | Schmitt-Trigger (CMOS) |
| Output Type | 3-State | 3-State | 3-State | 3-State | 3-State |
| Automotive Qualification | AEC-Q100 | AEC-Q100 | No | AEC-Q100 | AEC-Q100 |
| Operating Temperature Range | -40Β°C to 125Β°C | -40Β°C to 125Β°C | -40Β°C to 125Β°C | -40Β°C to 125Β°C | -40Β°C to 125Β°C |
| Maximum Capacitive Load | 50 pF | 50 pF | 50 pF | 50 pF | 50 pF |
Key Differentiators
- Automotive AEC-Q100 qualification (vs SN74AHC9541 (non-Q1))
- Wettable-flank QFN package (vs SN74AHC9541QDGSRQ1 (VSSOP))
- Schmitt-trigger inputs with CMOS levels (vs SN74AHCT9541-Q1 (TTL levels))
Design Notes
Ensure that the total capacitive load on each output does not exceed 50pF to maintain specified performance. Place decoupling capacitors (0.1uF and 10uF) close to the VCC pin to minimize power supply noise. Use a solid ground plane to reduce noise and improve signal integrity.
For the wettable-flank QFN package, ensure proper solder paste stencil design to achieve good solder joint formation. The wettable flanks allow for automated optical inspection (AOI) of solder joints, which is critical for automotive quality. Follow the recommended PCB land pattern from the datasheet.
Do not exceed the maximum capacitive load of 50pF on the outputs, as this can degrade signal integrity and timing. Also, ensure that both OE1 and OE2 are tied low to activate the outputs; leaving them high will place all outputs in high-impedance state, which may cause floating nodes if not properly terminated.
Compliance Information
AEC-Q100 qualified per TI product page. RoHS compliant. REACH compliance assumed based on TI's global compliance.
