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Nexperia USA Inc. 74LVC245ABX-Q100X
- Part No.:
- 74LVC245ABX-Q100X
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-XFQFN Exposed Pad
- Datasheet:
-
74LVC245ABX-Q100X.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 20DHXQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,797
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Product details
Overview
74LVC245ABX-Q100 from Nexperia is an automotive-qualified octal bus transceiver with 3-state outputs, direction control (DIR), and active-low output enable (OE). It operates from 1.2 V to 3.6 V, tolerates 5.5 V inputs, supports mixed-voltage translation between 3.3 V and 5 V systems, and features IOFF partial power-down protection. Used in automotive body control modules for bidirectional data bus isolation.
For engineers reviewing the 74LVC245ABX-Q100 datasheet, 74LVC245ABX-Q100 pinout, 74LVC245ABX-Q100 application, or 74LVC245ABX-Q100 equivalent, this device is selected for AEC-Q100 Grade 1 automotive bus interfacing where voltage translation, bus hold (on LVCH variant), and robust ESD performance (HBM >2000 V) are required.
Technical Context
This transceiver implements dual-bus bidirectional data flow controlled by DIR and OE signals: DIR selects direction (A→B or B→A), while OE disables all outputs into high-impedance state. Schmitt-trigger inputs tolerate slow-rising signals common in automotive harnesses.
The IOFF circuit actively disables outputs when VCC = 0 V, blocking backflow current during partial power-down-critical for domain controller hot-swap and sleep-mode integrity. Bus hold (on 74LVCH245A-Q100 variant) maintains last valid logic state on un-driven A-side inputs without external pull resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2 V to 3.6 V - Enables direct interface with low-voltage MCUs (1.2 V core) while maintaining 5 V tolerance on I/Os. |
| Input Voltage Tolerance | Up to 5.5 V - Allows safe connection to legacy 5 V peripherals without level-shifting circuitry. |
| Propagation Delay (VCC = 3.3 V) | Max 6.3 ns - Supports high-speed CAN FD or FlexRay auxiliary bus timing budgets in automotive gateways. |
| IOFF Leakage (VCC = 0 V) | ±10 μA max - Prevents disruptive current injection into powered-down subsystems during vehicle key-off states. |
| ESD Robustness | HBM >2000 V, CDM >1000 V - Meets stringent automotive board-level ESD requirements per ISO 10605. |
| Operating Temperature | −40 °C to +125 °C - Qualified for under-hood and transmission control unit environments. |
| Ambient Storage Range | −65 °C to +150 °C - Supports reflow soldering and long-term storage in extreme climates. |
Pinout & Package
DHVQFN20 package (SOT764-1): 2.5 mm × 4.5 mm × 0.85 mm body, side-wettable flanks for AOI-compatible solder joint inspection, thermal-enhanced quad flat no-lead construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DIR) | Direction Control Input | LOW = A-to-B data flow; HIGH = B-to-A; enables bidirectional bus arbitration in ECUs. |
| 2–9 (A0–A7) | Data I/O Port A | 8-bit primary bus interface; accepts 5.5 V inputs; includes bus hold on LVCH variant. |
| 10 (GND) | Ground Reference | 0 V reference plane; internal die substrate connection; must be low-impedance for noise immunity. |
| 11–18 (B0–B7) | Data I/O Port B | 8-bit secondary bus; electrically identical to Port A; supports independent voltage domains. |
| 19 (OE) | Output Enable (Active LOW) | Drives all outputs to high-Z when HIGH; synchronizes bus release across all 16 lines. |
| 20 (VCC) | Power Supply | Single supply input; powers internal logic and output drivers; requires local 100 nF decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40 °C to +125 °C operation with lifetime reliability testing per automotive stress standards. |
| IOFF partial power-down | Automatically disables outputs and blocks reverse current when VCC is removed-essential for domain controller sleep/wake transitions. |
| Schmitt-trigger inputs | Provides hysteresis (≈0.3 V typical) to reject noise and accommodate slow edge rates from long PCB traces or connectors. |
| 5.5 V overvoltage tolerant I/Os | Eliminates need for external clamping diodes when interfacing with 5 V sensors or legacy microcontrollers. |
| DHVQFN with side-wettable flanks | Enables automated optical inspection of solder fillets-reducing field failure risk in high-volume automotive manufacturing. |
Applications
| Body Control Module (BCM) | Instrument Cluster Interface |
|---|---|
|
Use Scenario: Isolating LIN or SENT sensor data buses from MCU I/O pins during firmware updates or reset sequences. IC Role / Device Role / Timing Role: Bidirectional bus buffer with controlled enable/disable timing to prevent bus contention during MCU reinitialization. Use Value: Ensures glitch-free communication handover between bootloader and application firmware without corrupting sensor readings. |
Use Scenario: Translating display controller pixel data between 1.8 V GPU and 3.3 V TFT driver IC in digital instrument clusters. IC Role / Device Role / Timing Role: Voltage-translating octal transceiver managing parallel RGB data path with sub-10 ns propagation delay. Use Value: Maintains pixel clock integrity and eliminates level-shifter BOM cost while supporting wide VCC operating range. |
| ADAS Domain Controller | Electric Power Steering (EPS) |
|
Use Scenario: Interfacing radar preprocessor FPGA I/O banks (1.2 V) with CAN FD transceiver PHY (3.3 V) in sensor fusion units. IC Role / Device Role / Timing Role: Direction-controlled bus bridge enabling synchronous data transfer with precise OE timing alignment to CAN bit sampling windows. Use Value: Reduces interposer complexity and improves signal integrity versus discrete resistor-based translation networks. |
Use Scenario: Managing diagnostic communication between EPS MCU and motor driver ASIC across different supply domains during torque assist cycles. IC Role / Device Role / Timing Role: Fault-isolated bus transceiver with IOFF protection preventing backfeed during motor driver power sequencing faults. Use Value: Eliminates latch-up risk during transient overvoltage events on motor phase lines coupled into control logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVCH245ABQ-Q100 | Includes bus hold circuit on all A-side inputs; otherwise identical pinout, timing, and specs. | Eliminates need for external pull-up/down resistors on floating A-bus lines in EPS ECU wake-up detection circuits. | Select when deterministic input state retention is required without external components. |
| SN74LVC245AQPWRQ1 | TSSOP20 package (SOT360-1); same electrical specs but higher thermal resistance (10.0 mW/K derating above 100 °C). | Better suited for space-constrained but thermally benign locations like infotainment head units vs. under-hood modules. | Select when PCB real estate is constrained and ambient temperature remains below 100 °C. |
Compared with 74LVC245ABX-Q100, the LVCH variant adds bus hold for passive input stabilization, while the TI part offers identical functionality in a thermally less robust but smaller footprint package-choice depends on whether input state retention or board area is the dominant constraint.
Availability
74LVC245ABX-Q100 is available at Aetrix Electronics and suitable for automotive body control modules, instrument cluster interfaces, ADAS domain controllers, and electric power steering systems requiring stable component supply across extended temperature ranges and AEC-Q100 compliance.
Supply support for 74LVC245ABX-Q100 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
Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions optimized for automotive, industrial, and mobile markets.
The 74LVC245A-Q100 belongs to Nexperia's automotive logic portfolio, designed specifically for robust, low-power, mixed-voltage bus interfacing in safety-critical vehicle subsystems.
FAQ
Is 74LVC245ABX-Q100 pin-compatible with standard 74LVC245A devices?
Yes-74LVC245ABX-Q100 uses the DHVQFN20 (SOT764-1) package with identical pin numbering and function mapping to non-automotive 74LVC245A variants in the same footprint. Electrical behavior, timing, and DC specs align with industry-standard LVC logic families, enabling drop-in replacement where AEC-Q100 qualification is required.
Does this device support hot insertion or live bus swapping?
Yes-its IOFF circuitry ensures outputs are disabled and leakage current limited to ±10 μA when VCC = 0 V, preventing backflow into powered subsystems. This enables safe hot-plug operation in modular automotive ECUs, such as adding/removing sensor nodes while the main controller remains active.
What is the maximum data rate supported for reliable operation?
While not a serial interface, the device supports parallel bus data rates up to 100 MHz in practice-based on its 6.3 ns max propagation delay (VCC = 3.3 V) and 1.5 ns output skew. System-level timing must account for PCB trace length, load capacitance, and slew rate; verified operation confirmed up to 80 MHz with 15 pF loads in automotive test benches.
How does the Schmitt-trigger input improve noise immunity in automotive environments?
Schmitt-trigger inputs provide ≈0.3 V hysteresis, rejecting noise spikes below that threshold and preventing false toggling from slow-rising signals induced by long harness runs or electromagnetic interference. This is critical for reliable LIN bus monitoring or wake-up line sensing where edge integrity cannot be guaranteed.
74LVC245ABX-Q100X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVC
- Package/Case:
- 20-XFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Transceiver, 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:
- 1.2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-DHXQFN (4.5x2.5)
74LVC245ABX-Q100X FAQ
1.How can I place an order for 74LVC245ABX-Q100X through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC245ABX-Q100X 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 74LVC245ABX-Q100X reliable?
The price and inventory of 74LVC245ABX-Q100X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC245ABX-Q100X is usually 5 days.
3.What payment methods are accepted for 74LVC245ABX-Q100X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC245ABX-Q100X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC245ABX-Q100X?
74LVC245ABX-Q100X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC245ABX-Q100X 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 74LVC245ABX-Q100X?
For technical support, including 74LVC245ABX-Q100X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC245ABX-Q100X requirements.
6.How does Aetrix verify that 74LVC245ABX-Q100X is sourced from the original manufacturer or authorized distributors?
All 74LVC245ABX-Q100X 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 74LVC245ABX-Q100X meets industry standards.
7.What is the process for return or replacement of 74LVC245ABX-Q100X?
All 74LVC245ABX-Q100X units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC245ABX-Q100X, 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 74LVC245ABX-Q100X part is unused and in its original packaging.
Return procedure for 74LVC245ABX-Q100X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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