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Nexperia USA Inc. 74LVC245AD-Q100J
- Part No.:
- 74LVC245AD-Q100J
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74LVC245AD-Q100J.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,828
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Product details
Overview
74LVC245AD-Q100 from Nexperia is an automotive-grade 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 74LVC245AD-Q100 datasheet, 74LVC245AD-Q100 pinout, 74LVC245AD-Q100 application, or 74LVC245AD-Q100 equivalent, key selection criteria include AEC-Q100 Grade 1 qualification (-40 °C to +125 °C), 5.5 V overvoltage-tolerant inputs, IOFF-enabled safe power sequencing, Schmitt-trigger input noise immunity, and SO20 package compatibility with legacy PCB layouts.
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 enables/disables all outputs into high-impedance state. The IOFF circuit actively disables outputs when VCC = 0 V, preventing backflow current during partial power-down sequences common in automotive domain controllers.
Schmitt-trigger inputs ensure robust operation with slow-rising signals (e.g., from mechanical switches or LIN bus peripherals), and 5.5 V tolerance allows direct interfacing with legacy 5 V microcontrollers without level-shifting. Bus hold functionality is absent in the 74LVC245A variant (present only in 74LVCH245A), confirming this part relies on external termination or system-level pull resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage range | 1.2 V to 3.6 V - Enables operation across low-power MCU domains (1.8 V) and standard 3.3 V logic rails. |
| Input voltage tolerance | Up to 5.5 V - Allows direct connection to 5 V peripherals without external clamping or translators. |
| Propagation delay (VCC = 3.3 V) | Max 6.3 ns - Supports >80 MHz data throughput in synchronous bus applications. |
| IOFF leakage (VCC = 0 V) | ±20 μA - Limits backfeed current during hot-swap or multi-rail power sequencing. |
| ESD rating (HBM) | >2000 V - Meets automotive board-level ESD robustness requirements per ISO 10605. |
| Operating temperature | -40 °C to +125 °C - Qualified per AEC-Q100 Grade 1 for under-hood and powertrain ECUs. |
| Output drive strength | ±24 mA at VCC = 3.0 V - Sufficient to drive 15 pF loads with 10 ns rise/fall times across full temp range. |
Pinout & Package
74LVC245AD-Q100 uses the SO20 (SOT163-1) package: plastic small outline, 20 leads, 7.5 mm body width, 1.27 mm lead pitch. Pin 1 index located at top-left corner with notch or dot marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DIR) | Direction control input | LOW routes data from A-side to B-side; HIGH routes from B-side to A-side - enables bidirectional bus arbitration. |
| 2–9 (A0–A7) | Port A data I/O | 8-bit bidirectional data port; inputs when DIR selects A→B, outputs when DIR selects B→A. |
| 10 (GND) | Ground reference | 0 V return path for all internal logic and I/O - must be low-inductance connection in automotive PCBs. |
| 11–18 (B0–B7) | Port B data I/O | 8-bit bidirectional data port; complementary to A-port - forms full 16-pin transceiver interface. |
| 19 (OE) | Output enable (active LOW) | Drives all outputs to high-impedance when HIGH - enables bus sharing among multiple devices. |
| 20 (VCC) | Power supply | Core logic and I/O supply - decoupling capacitor (100 nF) required within 5 mm of pin per automotive layout rules. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for -40 °C to +125 °C operation - certified for engine control, transmission, and ADAS domain controllers. |
| IOFF partial power-down protection | Outputs disabled at VCC = 0 V with ±20 μA leakage - prevents back-current damage during battery disconnect or rail sequencing. |
| 5.5 V tolerant inputs | Accepts 5 V logic levels while powered from 1.2–3.6 V - eliminates need for discrete level shifters in mixed-voltage clusters. |
| Schmitt-trigger inputs | Hysteresis ≥0.3 V at VCC = 3.3 V - rejects noise on long harness traces and tolerates slow-switching sensors. |
| JEDEC-compliant voltage ranges | Supports JESD8-7A (1.65–1.95 V), JESD8-5A (2.3–2.7 V), JESD8-C/JESD36 (2.7–3.6 V) - ensures interoperability with industry-standard logic families. |
Applications
| Automotive Body Control Module (BCM) | Infotainment Head Unit Interface |
|---|---|
Use Scenario: Isolating CAN/LIN microcontroller data buses from high-noise door module wiring harnesses. IC Role / Device Role / Timing Role: Bidirectional data buffer with direction control synchronized to message framing; OE gated by MCU GPIO during sleep mode entry. Use Value: Prevents ground loop currents and signal corruption during vehicle power mode transitions (e.g., ignition OFF → ACC). |
Use Scenario: Level-shifting between 3.3 V application processor and 5 V display timing controller in head-up display (HUD) subsystem. IC Role / Device Role / Timing Role: Voltage-translating bus transceiver enabling synchronous pixel data transfer without added delay stages. Use Value: Eliminates external level shifters, reducing BOM count and PCB area while maintaining <6.3 ns propagation delay for 80 MHz pixel clocks. |
| Advanced Driver Assistance Systems (ADAS) Camera Link | Electric Power Steering (EPS) Motor Controller |
Use Scenario: Interfacing 3.3 V image sensor serializer with 5 V deserializer ASIC in surround-view camera systems. IC Role / Device Role / Timing Role: Direction-controlled data bridge with IOFF protection during camera power cycling. Use Value: Ensures no backfeed into powered-down sensor side during hot-plug events, meeting ISO 11452-4 EMC immunity requirements. |
Use Scenario: Buffering SPI commands from 3.3 V MCU to 5 V gate driver IC in motor phase control loop. IC Role / Device Role / Timing Role: Low-latency command relay with OE synchronized to PWM dead-time insertion. Use Value: Guarantees sub-10 ns timing margin between MCU command issuance and gate driver activation, critical for torque ripple suppression. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC245APW-Q100 | TSSOP20 package (4.4 mm width); 10.0 mW/K thermal derating above 100 °C | Better thermal performance in dense layouts; requires rework of land pattern and stencil | Select when board space is constrained and thermal resistance < 120 K/W is required. |
| SN74LVC245AQPWRQ1 | Texas Instruments variant; identical electrical specs but different IOFF leakage (±10 μA max) and JEDEC compliance scope | Approved for TI-specific automotive platforms; not cross-qualified to AEC-Q100 Rev G test plan | Choose only if mandated by OEM platform design-in requirements or TI ecosystem alignment. |
Compared with 74LVC245APW-Q100, the SO20 package offers superior manufacturability in legacy automotive assembly lines; compared with SN74LVC245AQPWRQ1, the Nexperia part provides tighter IOFF leakage control and broader JEDEC standard coverage, enhancing reliability in multi-rail power architectures.
Availability
74LVC245AD-Q100 is available at Aetrix Electronics and suitable for automotive body control modules, infotainment interfaces, and ADAS camera links requiring stable component supply across extended temperature ranges and AEC-Q100-compliant traceability.
Supply support for 74LVC245AD-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 leading semiconductor manufacturer headquartered in Nijmegen, Netherlands, specializing in high-volume logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74LVC245A-Q100 belongs to Nexperia's automotive-qualified logic portfolio, designed specifically for robust bidirectional data buffering in electrically noisy, thermally demanding vehicle subsystems.
FAQ
Is 74LVC245AD-Q100 compatible with 5 V TTL inputs?
Yes - its inputs tolerate up to 5.5 V regardless of VCC level (1.2 V to 3.6 V), enabling direct interface with 5 V TTL outputs without external level shifters. Input thresholds scale with VCC (e.g., VIH = 2.0 V min at VCC = 3.3 V), ensuring reliable recognition of TTL HIGH/LOW states.
What is the maximum capacitive load this transceiver can drive reliably?
At VCC = 3.3 V and Tamb = 125 °C, it drives 24 mA with VOL ≤ 0.55 V into a 15 pF load, supporting typical PCB trace + connector capacitance. For heavier loads (>30 pF), propagation delay increases to 8.0 ns max and output rise/fall times degrade - use series termination or reduce trace length.
Does this device include bus hold circuitry?
No - bus hold (IBHL/IBHH) is exclusive to the 74LVCH245A-Q100 variant. The 74LVC245AD-Q100 lacks internal weak pull-up/pull-down on data pins, requiring external termination resistors or system-level biasing for floating-input stability in automotive harness environments.
How does IOFF protection function during battery disconnect scenarios?
When VCC drops below 0.2 V, the IOFF circuit disables all outputs, limiting backfeed current to ±20 μA even if 5 V remains present on A/B pins. This prevents reverse current flow into a powered-down domain, protecting downstream regulators and meeting ISO 16750-2 transient load-dump survivability requirements.
74LVC245AD-Q100J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVC
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-SO
74LVC245AD-Q100J FAQ
1.How can I place an order for 74LVC245AD-Q100J through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC245AD-Q100J 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 74LVC245AD-Q100J reliable?
The price and inventory of 74LVC245AD-Q100J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC245AD-Q100J is usually 5 days.
3.What payment methods are accepted for 74LVC245AD-Q100J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC245AD-Q100J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC245AD-Q100J?
74LVC245AD-Q100J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC245AD-Q100J 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 74LVC245AD-Q100J?
For technical support, including 74LVC245AD-Q100J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC245AD-Q100J requirements.
6.How does Aetrix verify that 74LVC245AD-Q100J is sourced from the original manufacturer or authorized distributors?
All 74LVC245AD-Q100J 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 74LVC245AD-Q100J meets industry standards.
7.What is the process for return or replacement of 74LVC245AD-Q100J?
All 74LVC245AD-Q100J units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC245AD-Q100J, 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 74LVC245AD-Q100J part is unused and in its original packaging.
Return procedure for 74LVC245AD-Q100J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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