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Texas Instruments SN74AHC541QPWRG4Q1
- Part No.:
- SN74AHC541QPWRG4Q1
- Manufacturer:
- Texas Instruments
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74AHC541QPWRG4Q1.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:678
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Product details
Overview
SN74AHC541QPWRG4Q1 from Texas Instruments is an automotive-qualified octal buffer/driver with 3-state outputs, operating from 2 V to 5.5 V, supporting ±8 mA output drive at 5 V, 125 °C max operating temperature, and TSSOP-20 package - ideal for bus driving and memory address buffering in vehicle control modules.
For engineers reviewing the SN74AHC541QPWRG4Q1 datasheet, SN74AHC541QPWRG4Q1 pinout, SN74AHC541QPWRG4Q1 application, or SN74AHC541QPWRG4Q1 equivalent, this page delivers verified electrical specs, functional modes, thermal data, automotive qualification status, and real-world use context for bus isolation, signal gating, and controller reset hold scenarios.
Technical Context
The SN74AHC541QPWRG4Q1 implements dual independent 3-state enable logic (OE1/OE2) using active-low AND-gated control, allowing per-group output disable. Its AHC logic family ensures CMOS-level compatibility, rail-to-rail input thresholds, and low dynamic power consumption.
It features noninverting buffer functionality across eight channels, with propagation delays as low as 3.5 ns (tPLH/tPHL @ 5 V, CL = 15 pF), output transition rates up to 100 ns/V (at 3.3 V), and latch-up immunity exceeding 250 mA per JESD17 - all validated across −40 °C to +125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 5.5 V - supports direct interface with 3.3 V and 5 V logic domains without level shifters |
| IOH/IOL | ±8 mA @ 5 V - sufficient to drive standard TTL loads or multiple CMOS inputs in automotive ECUs |
| tPLH/tPHL | 3.5 ns min @ 5 V, CL = 15 pF - enables high-speed bus toggling in infotainment and ADAS subsystems |
| Operating Temp | −40 °C to +125 °C - qualified for under-hood and transmission control unit environments |
| Input Thresholds | VIL ≤ 1.65 V, VIH ≥ 3.85 V @ VCC = 5.5 V - ensures noise margin > 0.7 V in electrically noisy vehicle harnesses |
| Quiescent Current | 4 μA typical @ 5.5 V - minimizes standby power in always-on vehicle networks |
| RθJA | 116.8 °C/W (TSSOP-20) - defines thermal derating limits for continuous operation in sealed enclosures |
Pinout & Package
TSSOP-20 (PW) package: 6.5 mm × 6.4 mm body size, 1.2 mm max height, lead pitch 0.65 mm, RoHS-compliant NiPdAu finish, MSL Level-1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OE1, OE2 | Active-low 3-state enable inputs | Independent control of two groups of four outputs; both must be low for corresponding Y outputs to drive |
| A1–A8 | Buffer input terminals | Noninverting logic inputs; each maps directly to Y1–Y8; all unused inputs must be tied to VCC or GND |
| Y1–Y8 | 3-state buffered outputs | High-impedance state when OE1 or OE2 is high; otherwise reproduce A1–A8 with ±8 mA drive capability |
| VCC, GND | Power supply pins | Single-supply operation; requires local 0.1 μF bypass capacitor at VCC pin per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 certified - meets reliability, ESD, and thermal stress requirements for safety-critical vehicle systems |
| Dual 3-state control | Separate OE1/OE2 pins allow selective disabling of two 4-bit output groups - simplifies bus arbitration in multi-master designs |
| High noise immunity | Dynamic input thresholds (VIL(D) = 1.5 V, VIH(D) = 3.5 V @ 5 V) suppress coupling from adjacent high-current traces |
| Low power dissipation | 12 pF typical power-dissipation capacitance - reduces switching current and heat generation in dense PCB layouts |
| Latch-up robustness | Exceeds 250 mA per JESD17 - prevents destructive failure during load dump or ground bounce events |
Applications
| Body Control Module Signal Gating | Instrument Cluster Bus Isolation |
|---|---|
Use Scenario: Isolating CAN/LIN transceiver data lines during microcontroller reset to prevent bus contention. IC Role / Device Role / Timing Role: SN74AHC541QPWRG4Q1 acts as a controlled signal gate, holding outputs in high-Z while OE1/OE2 are asserted high during MCU boot sequence. Use Value: Eliminates spurious bus traffic and avoids NACK errors on shared vehicle networks without requiring firmware coordination. |
Use Scenario: Driving multiplexed segment drivers in analog gauge clusters where display updates must be synchronized with ECU timing. IC Role / Device Role / Timing Role: SN74AHC541QPWRG4Q1 buffers and amplifies 8-bit address/data signals from cluster MCU to LED driver ICs with precise edge control. Use Value: Ensures clean, fast transitions (<6 ns @ 5 V) to prevent ghosting or flicker in analog needle positioning circuits. |
| ADAS Camera Interface Buffering | Transmission Control Unit Address Latching |
Use Scenario: Conditioning parallel pixel data paths between image sensor and SoC in surround-view camera modules. IC Role / Device Role / Timing Role: SN74AHC541QPWRG4Q1 provides impedance matching and fan-out capability for 8-bit parallel video streams running at 25 MHz. Use Value: Maintains signal integrity over 50-mm PCB traces by reducing capacitive loading and skew between lanes. |
Use Scenario: Holding memory-mapped register addresses stable during gear-shifting interrupt service routines in automatic transmission controllers. IC Role / Device Role / Timing Role: SN74AHC541QPWRG4Q1 latches and isolates address bus signals from processor core during critical ISR execution windows. Use Value: Prevents address corruption caused by simultaneous bus access, ensuring deterministic response to torque request commands. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer/3-state driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVTH16244AQRGYRQ1 | 16-bit, 3.3 V only (2.7–3.6 V), higher drive (±24 mA), LVTH logic family | Requires separate voltage domain; better for high-speed backplanes but incompatible with 5 V buses | Select when interfacing with 3.3 V FPGAs or ASICs needing higher fan-out and lower propagation delay |
| SN74AHC244QPWRG4Q1 | Same AHC family, identical pinout and specs, but lacks Q1 automotive qualification and extended temp rating | Not AEC-Q100 qualified; limited to industrial or consumer use cases below 105 °C ambient | Choose only for cost-sensitive non-automotive designs where full automotive reliability is not required |
Compared with SN74LVTH16244AQRGYRQ1 and SN74AHC244QPWRG4Q1, the SN74AHC541QPWRG4Q1 uniquely combines automotive qualification, dual 3-state enables, 2–5.5 V operation, and TSSOP-20 footprint - making it the sole option for safety-critical 8-bit bus isolation in production vehicles.
Availability
SN74AHC541QPWRG4Q1 is available at Aetrix Electronics and suitable for automotive body control modules, instrument cluster interfaces, ADAS camera subsystems, and transmission control units requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for SN74AHC541QPWRG4Q1 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, embedded processing, and automotive-grade logic solutions, with decades of experience in high-reliability automotive electronics.
The SN74AHC541QPWRG4Q1 belongs to TI's AHC-Q1 automotive logic family, designed specifically for robust signal conditioning, bus isolation, and interface buffering in harsh-temperature vehicle subsystems.
FAQ
What is the maximum operating temperature for SN74AHC541QPWRG4Q1?
The SN74AHC541QPWRG4Q1 is rated for continuous operation from −40 °C to +125 °C ambient temperature, meeting AEC-Q100 Grade 1 requirements for under-hood and transmission control applications. This rating is validated across all electrical parameters in the datasheet's recommended operating conditions table.
Does SN74AHC541QPWRG4Q1 support 3.3 V and 5 V logic simultaneously?
No - the SN74AHC541QPWRG4Q1 operates from a single VCC supply between 2 V and 5.5 V. It can interface with either 3.3 V or 5 V systems depending on its supply voltage, but does not provide level translation between mixed-voltage domains. Input thresholds scale with VCC, ensuring compatibility within its chosen supply range.
How are the two output-enable inputs (OE1 and OE2) used in SN74AHC541QPWRG4Q1?
In the SN74AHC541QPWRG4Q1, OE1 controls Y1–Y4 and OE2 controls Y5–Y8. Both are active-low: outputs enter high-impedance state when either OE is high. This allows independent gating of two 4-bit groups - useful for time-multiplexed bus segments or partial system resets without affecting the entire data path.
Is SN74AHC541QPWRG4Q1 pin-compatible with non-automotive versions like SN74AHC541?
Yes - the SN74AHC541QPWRG4Q1 shares identical pinout, electrical behavior, and package dimensions (TSSOP-20) with the commercial SN74AHC541. However, it adds AEC-Q100 qualification, extended temperature validation, and automotive-specific reliability testing; no PCB layout changes are needed for drop-in replacement in qualified designs.
What thermal derating applies to SN74AHC541QPWRG4Q1 in sealed enclosures?
With RθJA = 116.8 °C/W (TSSOP-20), the SN74AHC541QPWRG4Q1 requires derating above 25 °C ambient. At 85 °C ambient, maximum allowable power dissipation drops to ~360 mW assuming no board-level heatsinking. Layout best practices - including copper pour under exposed pad (if applicable) and 0.1 μF local bypass - are essential to maintain junction temperature below 150 °C.
SN74AHC541QPWRG4Q1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AHC
- 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:
- 3-State
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 2V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
SN74AHC541QPWRG4Q1 FAQ
1.How can I place an order for SN74AHC541QPWRG4Q1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AHC541QPWRG4Q1 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 SN74AHC541QPWRG4Q1 reliable?
The price and inventory of SN74AHC541QPWRG4Q1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AHC541QPWRG4Q1 is usually 5 days.
3.What payment methods are accepted for SN74AHC541QPWRG4Q1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AHC541QPWRG4Q1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AHC541QPWRG4Q1?
SN74AHC541QPWRG4Q1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AHC541QPWRG4Q1 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 SN74AHC541QPWRG4Q1?
For technical support, including SN74AHC541QPWRG4Q1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AHC541QPWRG4Q1 requirements.
6.How does Aetrix verify that SN74AHC541QPWRG4Q1 is sourced from the original manufacturer or authorized distributors?
All SN74AHC541QPWRG4Q1 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 SN74AHC541QPWRG4Q1 meets industry standards.
7.What is the process for return or replacement of SN74AHC541QPWRG4Q1?
All SN74AHC541QPWRG4Q1 units undergo pre-shipment inspection (PSI). If there is an issue with SN74AHC541QPWRG4Q1, 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 SN74AHC541QPWRG4Q1 part is unused and in its original packaging.
Return procedure for SN74AHC541QPWRG4Q1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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