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Texas Instruments CLVC574AQDWRG4Q1
- Part No.:
- CLVC574AQDWRG4Q1
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CLVC574AQDWRG4Q1.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,990
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Product details
Overview
CLVC574AQDWRG4Q1 from Texas Instruments is an automotive-qualified octal edge-triggered D-type flip-flop with 3-state outputs, operating from 2 V to 3.6 V, featuring 7 ns max propagation delay at 3.3 V, ±24 mA output drive, and Ioff support for partial-power-down mode - used in automotive I/O port buffering and bidirectional bus interfacing.
For engineers reviewing the CLVC574AQDWRG4Q1 datasheet, CLVC574AQDWRG4Q1 pinout, CLVC574AQDWRG4Q1 application, or CLVC574AQDWRG4Q1 equivalent, key selection criteria include its 20-pin SOIC-DW package, 150 MHz clock frequency, mixed-mode 5-V-tolerant inputs with 3.3-V VCC, automotive temperature range (–40°C to 125°C), and Ioff-enabled power-down protection.
Technical Context
This device implements eight independent positive-edge-triggered D flip-flops with synchronous data capture on CLK↑ and asynchronous 3-state control via OE. Each output supports high-drive capability (±24 mA) and exhibits low ground bounce (<0.8 V) and undershoot (>2 V) at 3.3 V.
It enables mixed-voltage system interfacing: inputs tolerate up to 5.5 V while powered from 2.7–3.6 V, and Ioff circuitry blocks current backflow during power-down - critical for automotive domain controllers where subsystems power up/down asynchronously.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 3.6 V - ensures compatibility with modern automotive 3.3-V supply rails and brown-out resilience down to 2 V. |
| Max Clock Frequency | 150 MHz - supports high-speed data latching in ADAS sensor interface and infotainment data pipelines. |
| tpd (Propagation Delay) | 7 ns at VCC = 3.3 V - enables tight timing margins in synchronous bus applications like CAN/FlexRay peripheral registers. |
| IOL / IOH | ±24 mA at VCC = 3 V - drives heavy capacitive loads (e.g., >50 pF PCB traces) without external buffers in body control modules. |
| Ioff Support | Enabled - prevents damaging back-current when CLVC574AQDWRG4Q1 is unpowered but connected to active 5-V buses in multi-rail ECUs. |
| Input Voltage Tolerance | Up to 5.5 V - allows direct connection to legacy 5-V microcontrollers or sensors without level-shifting in retrofit automotive designs. |
| Operating Temperature | –40°C to 125°C - qualified per AEC-Q100 Grade 1 for under-hood and transmission control unit deployment. |
Pinout & Package
CLVC574AQDWRG4Q1 is housed in a 20-pin SOIC (DW) package, 7.5 mm × 12.8 mm footprint, 2.65 mm max height, RoHS-compliant NIPDAU finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OE (Output Enable) | Active-low 3-state control; does not affect internal flip-flop state - enables bus sharing without data corruption. |
| 2–9 | 1D–8D | Data inputs synchronized to CLK↑; accept 0–5.5 V logic levels independent of VCC. |
| 10 | GND | Ground reference for all I/O and core logic; decoupling required within 10 mm of pin. |
| 11 | VCC | Core supply (2–3.6 V); must be filtered with ≥100 nF ceramic capacitor adjacent to pin. |
| 12–19 | 1Q–8Q | Registered outputs with 3-state capability; drive ±24 mA and tolerate 0–5.5 V in high-Z mode. |
| 20 | CLK | Positive-edge clock input; 150 MHz max rate; requires monotonic rise/fall <2.5 ns for reliable triggering. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q100 Grade 1 qualified - validated for continuous operation from –40°C to 125°C in engine control and chassis systems. |
| Mixed-Mode Signal Operation | 5-V-tolerant inputs on 3.3-V VCC - eliminates level shifters when interfacing with legacy 5-V sensors or microcontrollers. |
| Ioff Partial-Power-Down Protection | Blocks reverse current flow during VCC ramp-down - prevents latch-up or damage when CLVC574AQDWRG4Q1 is powered off mid-bus transaction. |
| Low Ground Bounce | Typical VOLP < 0.8 V at 3.3 V - reduces noise coupling into adjacent analog or RF circuits in integrated domain controllers. |
| High-Drive 3-State Outputs | ±24 mA drive strength with fast enable/disable (ten = 7.5 ns, tdis = 6.4 ns) - supports hot-plug-capable modular ECU architectures. |
Applications
| Automotive Body Control Module (BCM) | ADAS Camera Interface Buffer |
|---|---|
Use Scenario: Latching door lock status, mirror position, and lighting commands from MCU before driving high-capacitance wiring harnesses. IC Role / Device Role / Timing Role: Octal D flip-flop acting as output register with synchronous update on CLK↑ and 3-state isolation during bus arbitration. Use Value: Enables deterministic timing control and noise-immune signal integrity across 2+ meter wire runs using only one IC instead of discrete buffers. |
Use Scenario: Capturing parallel pixel data streams from image sensors before serialization over MIPI or LVDS. IC Role / Device Role / Timing Role: Edge-triggered data register synchronizing sensor output to system clock domain while isolating sensor-side noise. Use Value: Provides 7 ns setup/hold compliance and 5.5-V input tolerance to handle sensor voltage swings without external clamping. |
| Infotainment System I/O Expander | Electric Power Steering (EPS) Diagnostic Port |
Use Scenario: Extending GPIO count of main SoC to manage USB hub control lines, display backlight PWM, and audio codec configuration. IC Role / Device Role / Timing Role: Bidirectional bus driver with OE-controlled 3-state outputs enabling shared control of multiple peripherals on same trace set. Use Value: Eliminates need for external pull-ups and reduces PCB layer count by supporting bus contention-free multi-drop topology. |
Use Scenario: Isolating diagnostic communication lines between EPS ECU and service tool during firmware updates or calibration. IC Role / Device Role / Timing Role: Data latch providing galvanic separation and voltage translation between 5-V tester interface and 3.3-V EPS controller. Use Value: Ioff protection prevents backfeed damage during partial ECU power-down, meeting ISO 16750-2 transient immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC574AQDWRQ1 | Same silicon die and electrical specs; differs only in TI's internal assembly/test flow (G4 vs non-G4 suffix). | No functional difference; both qualified for automotive use and share identical pinout, timing, and thermal behavior. | Select SN74LVC574AQDWRQ1 if G4-specific traceability or packaging format (e.g., tape-and-reel marking variant) is required by OEM procurement policy. |
| MC74LCX574DTG | 3.3-V-only operation (no 5-V input tolerance); lower drive (±24 mA same, but VOH/VOL specs tighter at 3.3 V); different pinout (TSSOP-20 only). | Lacks mixed-voltage capability - unsuitable for 5-V sensor interfacing; requires layout change due to non-pin-compatible TSSOP footprint. | Choose MC74LCX574DTG only in fully 3.3-V systems where cost sensitivity outweighs flexibility; verify OE timing and Ioff absence in target application. |
Compared with CLVC574AQDWRG4Q1, SN74LVC574AQDWRQ1 offers identical functionality with alternate manufacturing traceability, while MC74LCX574DTG sacrifices 5-V input tolerance and pin compatibility for marginally lower static current - making CLVC574AQDWRG4Q1 the optimal choice for mixed-voltage automotive domains requiring guaranteed AEC-Q100 compliance and drop-in replacement assurance.
Availability
CLVC574AQDWRG4Q1 is available at Aetrix Electronics and suitable for automotive body control modules, ADAS camera interfaces, infotainment I/O expansion, electric power steering diagnostics, and domain controller register buffering requiring stable component supply across extended temperature and long lifecycle programs.
Supply support for CLVC574AQDWRG4Q1 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 delivering analog, embedded processing, and connectivity solutions with deep automotive qualification expertise and broad AEC-Q100 product coverage.
The CLVC574AQDWRG4Q1 belongs to TI's LVC logic family - designed specifically for automotive signal integrity, mixed-voltage interoperability, and robust operation in harsh ECU environments.
FAQ
What is the maximum clock frequency supported by CLVC574AQDWRG4Q1?
The CLVC574AQDWRG4Q1 supports a maximum clock frequency of 150 MHz across its full operating temperature range (–40°C to 125°C) at VCC = 3.3 V. This rating is verified per TI's SCAS715B datasheet switching characteristics table and applies to all eight flip-flops simultaneously under standard load conditions (CL = 50 pF). Timing margins must be validated against actual board parasitics in final design.
Does CLVC574AQDWRG4Q1 support 5-V input signals while powered from 3.3 V?
Yes, CLVC574AQDWRG4Q1 accepts input voltages up to 5.5 V regardless of VCC level (2 V to 3.6 V), enabling seamless integration in mixed-voltage automotive systems. This feature is explicitly specified in the "Recommended Operating Conditions" table and confirmed in the "Description" section of the TI datasheet - no external level shifters are needed when interfacing with 5-V sensors or legacy MCUs.
What is the purpose of the Ioff feature in CLVC574AQDWRG4Q1?
The Ioff feature in CLVC574AQDWRG4Q1 disables all outputs and blocks current backflow when VCC = 0 V, protecting the device and upstream circuitry during partial power-down events. This is critical in automotive ECUs where subsystems power up/down asynchronously. The function is tested per JEDEC JESD78 and documented in TI's SCAS715B datasheet under "Ioff Supports Partial-Power-Down Mode Operation."
Is CLVC574AQDWRG4Q1 pin-compatible with standard SN74LVC574A variants?
Yes, CLVC574AQDWRG4Q1 uses the same SOIC-DW (20-pin) package and identical pinout as SN74LVC574AQDWRQ1 and SN74LVC574A - including CLK, OE, D/Q assignments and power pin locations. Mechanical and electrical pin compatibility is confirmed in TI's DW0020A package drawing and SCAS715B logic diagram, ensuring drop-in replacement in existing layouts.
What is the thermal resistance (θJA) of CLVC574AQDWRG4Q1 in its SOIC-DW package?
The junction-to-ambient thermal resistance (θJA) for CLVC574AQDWRG4Q1 in the SOIC-DW package is 58°C/W, as specified in the "Absolute Maximum Ratings" table of TI's SCAS715B datasheet. This value assumes standard JEDEC 2-layer board conditions (1-inch² copper pad, 2 oz Cu) and is used to calculate maximum allowable power dissipation at elevated ambient temperatures in automotive under-hood applications.
CLVC574AQDWRG4Q1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 150 MHz
- Max Propagation Delay @ V, Max CL:
- 7ns @ 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:
- 4 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
CLVC574AQDWRG4Q1 FAQ
1.How can I place an order for CLVC574AQDWRG4Q1 through Aetrix?
Please submit a Request for Quotation (RFQ) for CLVC574AQDWRG4Q1 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 CLVC574AQDWRG4Q1 reliable?
The price and inventory of CLVC574AQDWRG4Q1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CLVC574AQDWRG4Q1 is usually 5 days.
3.What payment methods are accepted for CLVC574AQDWRG4Q1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CLVC574AQDWRG4Q1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CLVC574AQDWRG4Q1?
CLVC574AQDWRG4Q1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CLVC574AQDWRG4Q1 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 CLVC574AQDWRG4Q1?
For technical support, including CLVC574AQDWRG4Q1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CLVC574AQDWRG4Q1 requirements.
6.How does Aetrix verify that CLVC574AQDWRG4Q1 is sourced from the original manufacturer or authorized distributors?
All CLVC574AQDWRG4Q1 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 CLVC574AQDWRG4Q1 meets industry standards.
7.What is the process for return or replacement of CLVC574AQDWRG4Q1?
All CLVC574AQDWRG4Q1 units undergo pre-shipment inspection (PSI). If there is an issue with CLVC574AQDWRG4Q1, 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 CLVC574AQDWRG4Q1 part is unused and in its original packaging.
Return procedure for CLVC574AQDWRG4Q1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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