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Nexperia USA Inc. 74LVC4245ABQ-Q100J
- Part No.:
- 74LVC4245ABQ-Q100J
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
74LVC4245ABQ-Q100J.pdf
- Description:
- IC TRANSLATOR BIDIR 24DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,171
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Product details
Overview
74LVC4245ABQ-Q100 from Nexperia is an automotive-grade octal dual-supply translating transceiver with 3-state bus-compatible outputs in both directions, enabling bidirectional level translation between 3 V (VCC(B): 1.5–3.6 V) and 5 V (VCC(A): 1.5–5.5 V) buses. It features independent DIR and active-low OE controls, Schmitt-trigger inputs for noise immunity, and AEC-Q100 Grade 1 qualification (−40 °C to +125 °C). It is used in automotive infotainment backplane interfaces where mixed-voltage subsystems require isolated, direction-controlled data exchange.
For engineers reviewing the 74LVC4245ABQ-Q100 datasheet, 74LVC4245ABQ-Q100 pinout, 74LVC4245ABQ-Q100 application, or 74LVC4245ABQ-Q100 equivalent, key selection considerations include dual-supply voltage tolerance (5 V-tolerant I/O), propagation delay consistency across temperature (1.0–8.5 ns), 3-state isolation timing (tPZL/tPHZ ≤ 11.5 ns), and DHVQFN24 package suitability for AOI-enabled automotive PCB assembly.
Technical Context
This transceiver implements a true bidirectional, direction-controlled bus interface with separate VCC(A) and VCC(B) rails-enabling simultaneous operation of 5 V logic on port A and 3 V logic on port B. Its DIR input selects data flow direction (A→B or B→A), while active-low OE forces all outputs into high-impedance state regardless of DIR or supply status.
Schmitt-trigger inputs provide hysteresis (typ. 0.3–0.5 V) to tolerate slow-rising signals common in automotive harnesses; suspend-mode behavior ensures zero current path when either supply drops to 0 V, satisfying ISO 16750-2 load-dump and battery-disconnect requirements. VCCA ≥ VCCB is enforced except during suspend mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | VCC(A): 1.5–5.5 V (5 V bus); VCC(B): 1.5–3.6 V (3 V bus); supports mixed-voltage system partitioning |
| Propagation Delay | tPHL/tPLH: 1.0–8.5 ns (−40 °C to +125 °C); enables >100 MHz data rates in short-bus automotive modules |
| I/O Voltage Tolerance | 5 V tolerant inputs/outputs on both ports; allows direct connection to legacy 5 V microcontrollers without external resistors |
| 3-State Enable Timing | tPZL/tPHZ: 1.0–11.5 ns; guarantees fast bus release for time-critical arbitration protocols like LIN or CAN FD sideband control |
| ESD Robustness | HBM >2000 V, CDM >1000 V; meets automotive ESD immunity requirements per ISO 10605 Class 3B |
| Operating Temperature | −40 °C to +125 °C; qualified per AEC-Q100 Grade 1 for under-hood and cabin ECUs |
| Package | DHVQFN24 (SOT815-1), 3.5 × 5.5 × 0.85 mm with side-wettable flanks for automated optical inspection of solder joints |
Pinout & Package
DHVQFN24 package (SOT815-1) with 24 terminals, thermal-enhanced construction, and side-wettable flanks for AOI-capable reflow inspection. Body dimensions: 3.5 mm × 5.5 mm × 0.85 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Primary ground return for VCC(B) domain; not electrically connected to thermal pad unless explicitly tied to GND |
| 2–9 (A0–A7) | Data port A I/O | Bidirectional data lines referenced to VCC(A); support 5 V logic levels and tolerate 5.5 V inputs |
| 10 (OE) | Output enable (active LOW) | Asynchronous 3-state control: drives all A/B outputs to high-Z regardless of DIR or supply state |
| 11–13 (GND) | Ground reference | Additional low-inductance ground paths for signal integrity and thermal dissipation |
| 14–21 (B7–B0) | Data port B I/O | Bidirectional data lines referenced to VCC(B); operate down to 1.5 V supply with TTL-compatible thresholds |
| 22 (DIR) | Direction control | Defines data flow: DIR = LOW → A→B; DIR = HIGH → B→A; Schmitt-trigger input rejects noise on routing traces |
| 23–24 (VCC(B)) | 3 V bus supply | Dual VCC(B) pins reduce IR drop and improve PSRR for noise-sensitive 3 V subsystems (e.g., sensors) |
| 12 (VCC(A)) | 5 V bus supply | Single VCC(A) pin optimized for compact layout; supports up to 5.5 V for robustness against load dump transients |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40 °C to +125 °C operation with full parametric compliance across temperature and voltage corners |
| Dual independent supply rails | VCC(A) and VCC(B) can be powered/sequenced independently; no current path between supplies in suspend mode |
| Schmitt-trigger inputs | Input hysteresis ≥0.3 V ensures reliable edge detection on slow or noisy automotive bus signals (e.g., LIN wake-up) |
| Side-wettable flanks (SWF) | Enables 100% automated optical inspection of solder joint quality on bottom-terminated QFN-critical for automotive zero-defect manufacturing |
| 5 V-tolerant I/O on both ports | Eliminates need for external level-shifting resistors when interfacing with legacy 5 V MCUs or peripherals in modern 3 V domains |
Applications
| Automotive Infotainment Backplane | ADAS Camera Interface Bridge |
|---|---|
|
Use Scenario: Interfacing a 5 V video processor SoC with a 3 V MIPI CSI-2 serializer IC across a rigid-flex cable harness. IC Role / Device Role / Timing Role: Bidirectional level translator managing clock/data handshaking between voltage domains while maintaining sub-10 ns timing skew. Use Value: Enables direct integration without external passive components; tsk(o) ≤ 1.5 ns ensures pixel clock integrity across temperature. |
Use Scenario: Isolating diagnostic communication lines between a 3 V ADAS domain controller and 5 V radar module during firmware updates. IC Role / Device Role / Timing Role: Direction-controlled bus isolator using OE to decouple domains during reset sequences. Use Value: Prevents backfeed during power sequencing; high-impedance state holds at VCC(A) = 0 V per ISO 16750-2 requirement. |
| Body Control Module (BCM) Gateway | Electric Power Steering (EPS) Sensor Hub |
|
Use Scenario: Translating LIN bus signals between a 5 V MCU and multiple 3 V door-module sensors in a distributed architecture. IC Role / Device Role / Timing Role: Voltage-translating transceiver with Schmitt-trigger inputs rejecting harness-induced EMI on long LIN stubs. Use Value: Input hysteresis ≥0.3 V suppresses false triggers; AEC-Q100 qualification ensures reliability over 15-year vehicle lifetime. |
Use Scenario: Aggregating analog sensor outputs (steering angle, torque) from 3 V ASICs to a 5 V EPS main controller via parallel digital bus. IC Role / Device Role / Timing Role: Octal parallel translator providing deterministic latency (tPHL ≤ 8.5 ns) for real-time torque feedback loops. Use Value: Propagation delay variation <1.5 ns across channels maintains phase alignment critical for closed-loop motor control stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply translating transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVC4T245QPWRQ1 | 4-bit (not octal); lower drive strength (24 mA vs 32 mA); identical AEC-Q100 Grade 1 rating | Suitable for space-constrained modules with ≤4 signal lines; insufficient for full 8-bit data buses | Select when board area is primary constraint and channel count ≤4; verify tPHL remains <9 ns at VCC(B) = 2.7 V |
| TXB0308PWR | Auto-direction sensing (no DIR pin); higher ICC (100 μA typical vs 5 μA); non-AEC-Q100 rated | Applicable only in non-automotive industrial systems; lacks suspend-mode zero-current guarantee | Not recommended for automotive use; avoid where DIR-controlled deterministic direction or AEC-Q100 compliance is required |
Compared with SN74AVC4T245QPWRQ1 and TXB0308PWR, the 74LVC4245ABQ-Q100 uniquely delivers octal width, AEC-Q100 Grade 1 assurance, and explicit DIR control-making it the only option qualified for safety-critical 8-bit automotive data bridges requiring deterministic directionality and zero-current suspend behavior.
Availability
74LVC4245ABQ-Q100 is available at Aetrix Electronics and suitable for automotive infotainment backplanes, ADAS camera interface bridges, and body control module gateways requiring stable component supply across extended temperature and automotive lifecycle demands.
Supply support for 74LVC4245ABQ-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 delivering high-performance logic, discrete, and MOSFET solutions optimized for automotive, industrial, and mobile applications-with emphasis on reliability, efficiency, and AEC-Q100 compliance.
The 74LVC4245A-Q100 belongs to Nexperia's automotive-qualified LVC logic family, designed specifically for robust bidirectional level translation in mixed-voltage automotive subsystems operating from −40 °C to +125 °C.
FAQ
Can 74LVC4245ABQ-Q100 operate with VCC(A) = 3.3 V and VCC(B) = 2.5 V?
No. The datasheet mandates VCC(A) ≥ VCC(B) at all times except suspend mode. With VCC(A) = 3.3 V and VCC(B) = 2.5 V, the condition is satisfied-but operation must remain within Fig. 3's defined supply operation area. At those voltages, propagation delay increases to ≤10 ns and output drive degrades; verify VOH/VOL margins meet your receiver's VIH/VIL at worst-case temperature.
What happens if OE is held HIGH while DIR toggles?
When OE is HIGH (active LOW logic), all A and B port outputs enter high-impedance state regardless of DIR state or data activity. DIR transitions have no effect on output drivers-only on internal signal routing readiness. This enables safe bus arbitration: OE asserts isolation before DIR changes direction, preventing bus contention.
Is the thermal pad (pin 12) required to be soldered to GND?
No. Per datasheet note, the exposed thermal pad (terminal 12) has no electrical or mechanical requirement to be soldered. If soldered, it must remain floating or connect to GND-never to VCC or signal nets. Its primary function is thermal conduction, not grounding; improper connection risks short circuits or thermal stress fractures.
Does 74LVC4245ABQ-Q100 support hot insertion between live 3 V and 5 V buses?
Yes-within limits. Its I/O pins are 5 V tolerant and feature overvoltage-tolerant control inputs (OE/DIR up to 5.5 V). However, hot insertion requires controlled supply ramping: VCC(A) and VCC(B) must be established before applying signals. Simultaneous live insertion of both buses may exceed limiting values (e.g., VI > VCC + 0.5 V), risking latch-up per JESD78 Class 1 compliance boundary.
74LVC4245ABQ-Q100J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AVC
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Translator Type:
- -
- Channel Type:
- -
- Number of Circuits:
- -
- Channels per Circuit:
- -
- Voltage - VCCA:
- -
- Voltage - VCCB:
- -
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- -
- Data Rate:
- -
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-VFQFN Exposed Pad
74LVC4245ABQ-Q100J FAQ
1.How can I place an order for 74LVC4245ABQ-Q100J through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC4245ABQ-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 74LVC4245ABQ-Q100J reliable?
The price and inventory of 74LVC4245ABQ-Q100J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC4245ABQ-Q100J is usually 5 days.
3.What payment methods are accepted for 74LVC4245ABQ-Q100J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC4245ABQ-Q100J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC4245ABQ-Q100J?
74LVC4245ABQ-Q100J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC4245ABQ-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 74LVC4245ABQ-Q100J?
For technical support, including 74LVC4245ABQ-Q100J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC4245ABQ-Q100J requirements.
6.How does Aetrix verify that 74LVC4245ABQ-Q100J is sourced from the original manufacturer or authorized distributors?
All 74LVC4245ABQ-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 74LVC4245ABQ-Q100J meets industry standards.
7.What is the process for return or replacement of 74LVC4245ABQ-Q100J?
All 74LVC4245ABQ-Q100J units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC4245ABQ-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 74LVC4245ABQ-Q100J part is unused and in its original packaging.
Return procedure for 74LVC4245ABQ-Q100J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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