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Texas Instruments SN74LVC74AWBQARQ1
- Part No.:
- SN74LVC74AWBQARQ1
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 14-WFDFN Exposed Pad
- Datasheet:
-
SN74LVC74AWBQARQ1.pdf
- Description:
- AUTOMOTIVE, DUAL POSITIVE-EDGE-T
- Quantity:
- Payment:
- Shipping:
Inventory:3,850
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Product details
Overview
SN74LVC74AWBQARQ1 from Texas Instruments is an automotive-grade dual positive-edge-triggered D-type flip-flop with independent clear and preset inputs, operating from 2 V to 3.6 V, delivering 5.2 ns max propagation delay at 3.3 V, supporting 100 MHz clock frequency, and featuring 5.5 V-tolerant inputs for mixed-voltage system interfacing in engine control units and ADAS domain controllers.
For engineers reviewing the SN74LVC74AWBQARQ1 datasheet, SN74LVC74AWBQARQ1 pinout, SN74LVC74AWBQARQ1 application, or SN74LVC74AWBQARQ1 equivalent, this page delivers verified functional modes, thermal performance data for WQFN-14, automotive AEC-Q100 qualification status, and precise timing constraints for synchronous logic design in safety-critical automotive electronics.
Technical Context
The SN74LVC74AWBQARQ1 implements two independent edge-triggered D flip-flops with asynchronous active-low preset (PRE) and clear (CLR) inputs, enabling immediate output forcing regardless of clock state. Each channel supports simultaneous data latching on the rising edge of CLK while maintaining separate Q and Q̅ outputs.
Its input voltage tolerance up to 5.5 V allows direct interfacing with legacy 5 V logic without level shifters, and its 2 V–3.6 V supply range aligns with modern low-voltage automotive microcontroller I/O rails. The device meets AEC-Q100 Grade 1 (–40°C to +125°C) requirements and includes ESD protection exceeding ±2000 V HBM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2 V to 3.6 V - compatible with 2.5 V/3.3 V automotive MCU I/O domains and avoids overvoltage stress in 12 V vehicle systems. |
| Max Propagation Delay | 5.2 ns at VCC = 3.3 V - enables reliable operation in high-speed digital control loops up to 100 MHz clock rate. |
| Input Voltage Range | 0 V to 5.5 V - permits direct connection to 5 V sensors or legacy peripherals without external level translation circuitry. |
| Operating Temperature | –40°C to +125°C - qualified per AEC-Q100 Grade 1 for under-hood and powertrain applications. |
| ESD Rating | ±2000 V HBM - exceeds MIL-STD-883 Method 3015, ensuring robustness during automotive assembly and field handling. |
| Output Drive Strength | ±24 mA at VCC = 3 V - sufficient to drive multiple CMOS loads or small capacitive traces without signal degradation. |
| Power Dissipation Capacitance | 51 pF per flip-flop at 10 MHz - enables accurate dynamic power estimation for thermal management in compact ECUs. |
Pinout & Package
SN74LVC74AWBQARQ1 is housed in a 14-pin WQFN (BQA) package measuring 3 mm × 2.5 mm with 0.5 mm pitch and an exposed thermal pad requiring connection to PCB ground for optimal thermal performance and signal integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1CLK, 2CLK | Positive-edge clock input | Triggers synchronous data capture on rising transition; immune to slow-rising edges due to Schmitt-trigger-like threshold behavior. |
| 1D, 2D | Data input | Sampled at CLK↑ if PRE/CLR are high; must meet 3.0 ns setup time (VCC = 3.3 V) to avoid metastability. |
| 1PRE, 2PRE | Asynchronous preset input | Active-low: forces Q = HIGH and Q̅ = LOW immediately, overriding clock and data - used for known-state initialization. |
| 1CLR, 2CLR | Asynchronous clear input | Active-low: forces Q = LOW and Q̅ = HIGH immediately - critical for fault recovery and safe shutdown sequences. |
| 1Q, 2Q | True output | CMOS-compatible output driving capability; VOL ≤ 0.55 V at 24 mA ensures noise margin against 3.3 V logic thresholds. |
| 1Q̅, 2Q̅ | Inverted output | Complementary to Q; supports differential signaling, toggle-mode configuration, or feedback paths in counters. |
| VCC | Supply rail | Must be bypassed with 0.1 µF capacitor near pin; supports simultaneous 2.7 V–3.6 V operation across both flip-flops. |
| GND | Ground reference | Connected to exposed thermal pad via multiple vias - required for thermal dissipation and stable ground return path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Grade 1 (–40°C to +125°C) - certified for automotive powertrain, chassis, and ADAS applications per TI's production release documentation. |
| 5.5 V-Tolerant Inputs | Enables direct interface with 5 V sensors, CAN transceivers, or legacy microcontrollers without external level shifters or resistive dividers. |
| Low Ground Bounce | Typical VOLP < 0.8 V at VCC = 3.3 V - minimizes switching noise coupling into adjacent analog or RF circuits on shared PCB layers. |
| High-Speed Timing | 100 MHz max clock frequency with 3.3 ns minimum pulse width - supports real-time sampling in motor control PWM synchronization and sensor data capture. |
| Thermal Pad Integration | Exposed bottom thermal pad in WQFN-14 package reduces junction-to-board thermal resistance to 70.9°C/W - essential for sustained operation in sealed ECU enclosures. |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
|
Use Scenario: Synchronizing crankshaft/camshaft position signals before combustion timing calculation. IC Role / Device Role / Timing Role: Dual-channel D flip-flop captures two independent 5 V Hall-effect sensor edges with precise phase alignment relative to engine rotation. Use Value: 5.5 V-tolerant inputs eliminate level-shifter components; 5.2 ns tpd ensures sub-degree crank angle resolution at 8000 RPM. |
Use Scenario: Latching radar echo pulses in 77 GHz front-end timing chains before ADC sampling. IC Role / Device Role / Timing Role: Asynchronous preset/clear enables deterministic reset of pulse-width measurement counters upon detection of object proximity thresholds. Use Value: AEC-Q100 qualification guarantees reliability under vibration and thermal cycling; 100 MHz clock support matches radar baseband timing requirements. |
| Body Control Module (BCM) | Electric Power Steering (EPS) |
|
Use Scenario: Debouncing door lock/unlock switch inputs in distributed body networks. IC Role / Device Role / Timing Role: Dual flip-flop implements synchronized SR-latch behavior using PRE/CLR for glitch-free state transitions. Use Value: Independent clear/preset per channel allows isolated fault recovery without resetting entire module logic; 2 V min VCC supports battery brownout operation. |
Use Scenario: Capturing torque sensor quadrature signals for motor commutation timing in brushless EPS actuators. IC Role / Device Role / Timing Role: Edge-triggered D latch synchronizes quadrature A/B edges to MCU clock domain while preserving phase relationship. Use Value: Low ground bounce (<0.8 V) prevents corruption of sensitive analog torque feedback; thermal pad ensures stable operation at 125°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC74ADRQ1 | SOIC-14 package (8.65 mm × 6 mm), higher RθJA = 127.8°C/W, no exposed thermal pad. | Suitable for non-thermal-constrained prototyping or legacy board designs where WQFN reflow is unavailable. | Select when manual soldering, through-hole compatibility, or existing SOIC footprints are required - not for high-power-density automotive modules. |
| SN74LVC74AQPWRQ1 | TSSOP-14 package (5 mm × 6.4 mm), RθJA = 150.8°C/W, same electrical specs but lower thermal performance than BQA. | Preferred for space-constrained boards needing finer pitch than SOIC but lacking WQFN assembly capability. | Choose only if TSSOP reflow infrastructure exists and junction temperature rise remains within limits per thermal simulation. |
Compared with SN74LVC74ADRQ1 and SN74LVC74AQPWRQ1, the SN74LVC74AWBQARQ1 provides superior thermal management via its exposed pad and smallest footprint (3 mm × 2.5 mm), making it the sole option qualified for continuous operation in thermally dense engine bay environments.
Availability
SN74LVC74AWBQARQ1 is available at Aetrix Electronics and suitable for engine control units, ADAS domain controllers, and electric power steering modules requiring stable component supply across automotive production lifecycles.
Supply support for SN74LVC74AWBQARQ1 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 leader specializing in analog, embedded processing, and automotive ICs, with over 50 years of automotive qualification experience and ISO/TS 16949-certified manufacturing.
The SN74LVC74AWBQARQ1 belongs to TI's LVC logic family designed specifically for automotive signal integrity, low-power operation, and AEC-Q100 compliance - targeting timing-critical control functions in next-generation vehicle architectures.
FAQ
What automotive qualification does SN74LVC74AWBQARQ1 meet?
SN74LVC74AWBQARQ1 is qualified per AEC-Q100 Grade 1, covering –40°C to +125°C operation, and includes full failure analysis, HTOL, and ESD testing per TI's automotive release process. It is approved for use in engine control, transmission, and ADAS systems where functional safety is required.
Does SN74LVC74AWBQARQ1 support 5 V input signals?
Yes, SN74LVC74AWBQARQ1 accepts input voltages up to 5.5 V regardless of VCC level - enabling direct connection to 5 V sensors or legacy microcontrollers without external level shifters, while maintaining full 3.3 V output swing compatibility.
What is the maximum clock frequency supported by SN74LVC74AWBQARQ1?
SN74LVC74AWBQARQ1 supports up to 100 MHz clock frequency at VCC = 3.3 V ± 0.3 V, with minimum pulse width of 3.3 ns for CLK high/low states and 3.4 ns setup time for data inputs - verified across the full automotive temperature range.
How should the thermal pad on SN74LVC74AWBQARQ1 be connected?
The exposed thermal pad on SN74LVC74AWBQARQ1 must be soldered to a PCB ground plane using ≥4 thermal vias (0.3 mm diameter) placed within the pad area. TI recommends connecting it directly to GND - not floating or tied to VCC - to ensure thermal performance and signal reference stability.
Can SN74LVC74AWBQARQ1 replace SN74LVC74ADRQ1 in an existing design?
No direct replacement: SN74LVC74AWBQARQ1 uses WQFN-14 (3 mm × 2.5 mm) while SN74LVC74ADRQ1 uses SOIC-14 (8.65 mm × 6 mm). Footprint, reflow profile, and thermal pad requirements differ significantly - redesign of layout, stencil, and test fixtures is required for migration.
SN74LVC74AWBQARQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 14-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Set(Preset) and Reset
- Type:
- D-Type
- Output Type:
- Complementary
- Number of Elements:
- 2
- Number of Bits per Element:
- 1
- Clock Frequency:
- 100 MHz
- Max Propagation Delay @ V, Max CL:
- 5.2ns @ 3.3V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 2V ~ 3.6V
- Current - Quiescent (Iq):
- 10 µA
- Input Capacitance:
- 5 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 14-WQFN (3x2.5)
SN74LVC74AWBQARQ1 FAQ
1.How can I place an order for SN74LVC74AWBQARQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC74AWBQARQ1 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 SN74LVC74AWBQARQ1 reliable?
The price and inventory of SN74LVC74AWBQARQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC74AWBQARQ1 is usually 5 days.
3.What payment methods are accepted for SN74LVC74AWBQARQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC74AWBQARQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC74AWBQARQ1?
SN74LVC74AWBQARQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC74AWBQARQ1 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 SN74LVC74AWBQARQ1?
For technical support, including SN74LVC74AWBQARQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC74AWBQARQ1 requirements.
6.How does Aetrix verify that SN74LVC74AWBQARQ1 is sourced from the original manufacturer or authorized distributors?
All SN74LVC74AWBQARQ1 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 SN74LVC74AWBQARQ1 meets industry standards.
7.What is the process for return or replacement of SN74LVC74AWBQARQ1?
All SN74LVC74AWBQARQ1 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC74AWBQARQ1, 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 SN74LVC74AWBQARQ1 part is unused and in its original packaging.
Return procedure for SN74LVC74AWBQARQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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