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Texas Instruments CLVC244AQDWRG4Q1
- Part No.:
- CLVC244AQDWRG4Q1
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CLVC244AQDWRG4Q1.pdf
- Description:
- IC BUF NON-INVERT 3.6V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:8,921
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Product details
Overview
CLVC244AQDWRG4Q1 from Texas Instruments is an automotive-qualified octal 3-state buffer/driver IC designed for asynchronous bus interfacing in 1.65V–3.6V systems. It features dual 4-bit banks, 5.9ns max propagation delay at 3.3V, ±24mA output drive, and 5.5V-tolerant inputs - enabling mixed-voltage signal routing between 3.3V logic and legacy 5V peripherals in engine control units and ADAS domain controllers.
For engineers reviewing the CLVC244AQDWRG4Q1 datasheet, CLVC244AQDWRG4Q1 pinout, CLVC244AQDWRG4Q1 application, or CLVC244AQDWRG4Q1 equivalent, this page delivers verified electrical specs, SOIC-20 package details, automotive temperature range (–40°C to +125°C), Ioff-enabled live insertion support, and real-world timing behavior under load - all critical for ECU signal integrity validation and BOM consolidation.
Technical Context
The CLVC244AQDWRG4Q1 implements two independent 4-bit noninverting buffer banks, each controlled by a dedicated active-low output enable (xOE) input. Its CMOS architecture supports bidirectional voltage translation: 5.5V-tolerant inputs operate safely with 1.65V–3.6V VCC, while outputs swing rail-to-rail within VCC limits.
Each bank provides balanced sourcing/sinking capability (±24mA at 3V), low ground bounce (<0.8V VOLP), and undershoot immunity (>2V VOHV). The Ioff feature disables current flow during partial power-down, preventing back-drive damage when VCC = 0V - essential for hot-swap-capable automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 3.6V - enables direct integration into modern 3.3V automotive domains without level-shifting circuitry |
| Input Voltage Tolerance | Up to 5.5V - allows safe connection to 5V legacy sensors or microcontrollers without external clamping |
| Max Propagation Delay | 5.9ns at 3.3V - ensures sub-10ns timing margin for CAN FD or FlexRay interface clock domains |
| Output Drive Strength | ±24mA at 3V - drives 50Ω transmission lines or multiple CMOS loads without external buffers |
| Operating Temperature | –40°C to +125°C - qualified for under-hood applications including powertrain and battery management systems |
| Ioff Support | Active at VCC = 0V - prevents back-driving and latch-up during module hot-plug or power sequencing |
| ESD Rating | ±2000V HBM - meets AEC-Q100 stress requirements for automotive PCB assembly environments |
Pinout & Package
CLVC244AQDWRG4Q1 is supplied in a 20-pin SOIC (DW) package measuring 12.80mm × 10.3mm, with body size 12.80mm × 7.50mm. Pin 1 is marked with a beveled corner; pin 10 is GND and pin 20 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE / 2OE | Active-low enable for Bank 1 / Bank 2 - ties both to VCC via pull-up for power-up high-Z safety |
| 2, 4, 6, 8 / 11, 13, 15, 17 | 1A1–1A4 / 2A1–2A4 | Noninverting input terminals - accept 5.5V signals regardless of VCC setting |
| 12, 14, 16, 18 / 3, 5, 7, 9 | 1Y1–1Y4 / 2Y1–2Y4 | 3-state buffered outputs - enter high-impedance when corresponding OE is high |
| 10 | GND | Ground reference - requires low-inductance connection to minimize switching noise coupling |
| 20 | VCC | Supply pin - must be bypassed with 0.1µF ceramic capacitor placed adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q100 Grade 1 certified - validated for continuous operation in harsh vehicle environments |
| Mixed-Mode Signal Operation | 5V input compatibility with 3.3V VCC - eliminates discrete level shifters in multi-voltage ECUs |
| Low Ground Bounce | VOLP < 0.8V at 3.3V - reduces noise coupling into analog subsystems like ADC references |
| Live Insertion Support | Ioff limits leakage to ±10µA at 5.5V - enables safe replacement of modules without system shutdown |
| Thermal Robustness | RθJA = 58°C/W (SOIC) - sustains full output drive at +125°C ambient without derating |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Isolating sensor data buses (e.g., crankshaft position, camshaft timing) from MCU I/O during firmware updates. IC Role / Device Role / Timing Role: Octal buffer providing galvanically isolated signal path with 3-state disable during reprogramming. Use Value: Prevents spurious sensor readouts or actuator glitches during flash operations - critical for ISO 26262 ASIL-B compliance. |
Use Scenario: Driving long PCB traces (>12 cm) from radar processor to antenna control ICs. IC Role / Device Role / Timing Role: High-speed line driver with controlled edge rates and source termination support. Use Value: Enables clean signal integrity on FR4 traces without external damping resistors - reducing BOM count and layout area. |
| Body Control Module (BCM) | Infotainment Gateway |
Use Scenario: Combining multiple "power good" signals from DC/DC converters into a single system-ready indicator. IC Role / Device Role / Timing Role: Wired-OR logic implementation using 3-state outputs tied to common pull-up. Use Value: Eliminates need for discrete diodes or open-drain logic - improves reliability and reduces thermal footprint. |
Use Scenario: Enabling digital audio or video data lanes between SoC and display/audio codecs operating at different supply voltages. IC Role / Device Role / Timing Role: Voltage-tolerant bus buffer facilitating 3.3V ↔ 5V domain bridging. Use Value: Supports legacy 5V display interfaces while maintaining native 3.3V SoC core voltage - simplifies power architecture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC244AQPWRG4Q1 | TSSOP-20 package (6.5mm × 6.4mm); RθJA = 83°C/W; identical electrical specs and automotive qualification | Better suited for space-constrained layouts where SOIC footprint is prohibitive | Select when board area is constrained and thermal budget allows higher junction rise |
| SN74LVC244ADGSRQ1 | VSSOP-20 package (5.1mm × 4.9mm); RθJA = 87.2°C/W; same logic function and AEC-Q100 Grade 1 rating | Optimized for ultra-dense automotive modules requiring minimal PCB real estate | Choose for compact ECU designs where SOIC or TSSOP cannot fit, accepting higher thermal resistance |
Compared with CLVC244AQDWRG4Q1, the TSSOP and VSSOP alternatives offer identical functionality and automotive qualification but trade larger thermal resistance for smaller footprints - making them viable only when layout density outweighs thermal headroom requirements.
Availability
CLVC244AQDWRG4Q1 is available at Aetrix Electronics and suitable for engine control units, ADAS domain controllers, and body control modules requiring stable component supply across extended temperature ranges and automotive lifecycle commitments.
Supply support for CLVC244AQDWRG4Q1 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 and embedded processing technologies, with over 50 years of automotive IC design expertise and AEC-Q100-compliant manufacturing.
The SN74LVC244A-Q1 product line delivers robust, voltage-flexible bus interface solutions specifically engineered for automotive signal routing - balancing speed, noise immunity, and power-domain interoperability in safety-critical systems.
FAQ
What is the maximum operating temperature range for CLVC244AQDWRG4Q1?
The CLVC244AQDWRG4Q1 is rated for continuous operation from –40°C to +125°C, meeting AEC-Q100 Grade 1 requirements. This range is validated across all electrical parameters including propagation delay, output drive, and leakage current - ensuring reliable performance in under-hood automotive environments where ambient temperatures exceed 105°C.
Does CLVC244AQDWRG4Q1 support 5V input signals while powered from 3.3V?
Yes, CLVC244AQDWRG4Q1 accepts input voltages up to 5.5V regardless of VCC level (1.65V–3.6V). This mixed-mode capability is explicitly specified in the Recommended Operating Conditions table and enables direct interfacing with 5V sensors or legacy microcontrollers without external level shifters - a key advantage in multi-voltage automotive architectures.
How does the Ioff feature of CLVC244AQDWRG4Q1 protect during partial power-down?
The Ioff feature in CLVC244AQDWRG4Q1 disables current flow through the device when VCC = 0V, limiting input/output leakage to ±10µA even with 5.5V applied. This prevents back-driving of powered-down sections and eliminates latch-up risk during hot-swap scenarios - critical for modular automotive electronics requiring field-replaceable units.
What is the recommended bypass capacitor for CLVC244AQDWRG4Q1?
A 0.1µF ceramic capacitor is recommended for CLVC244AQDWRG4Q1, placed as close as possible to pin 20 (VCC) with a low-inductance path to pin 10 (GND). TI's layout guidelines specify mounting on the same PCB side as the IC, using wide traces and an unbroken ground plane beneath - minimizing supply noise that could affect timing margins or cause false triggering in adjacent circuits.
Can CLVC244AQDWRG4Q1 be used as a drop-in replacement for standard SN74LVC244A in automotive designs?
No - CLVC244AQDWRG4Q1 is the automotive-qualified variant (AEC-Q100 Grade 1, –40°C to +125°C, enhanced ESD and latch-up immunity), whereas the commercial SN74LVC244A is rated only to +85°C and lacks automotive qualification. Using the commercial part in automotive applications violates functional safety requirements and voids warranty - CLVC244AQDWRG4Q1 must be specified for any vehicle-grade deployment.
CLVC244AQDWRG4Q1 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
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
CLVC244AQDWRG4Q1 FAQ
1.How can I place an order for CLVC244AQDWRG4Q1 through Aetrix?
Please submit a Request for Quotation (RFQ) for CLVC244AQDWRG4Q1 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 CLVC244AQDWRG4Q1 reliable?
The price and inventory of CLVC244AQDWRG4Q1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CLVC244AQDWRG4Q1 is usually 5 days.
3.What payment methods are accepted for CLVC244AQDWRG4Q1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CLVC244AQDWRG4Q1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CLVC244AQDWRG4Q1?
CLVC244AQDWRG4Q1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CLVC244AQDWRG4Q1 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 CLVC244AQDWRG4Q1?
For technical support, including CLVC244AQDWRG4Q1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CLVC244AQDWRG4Q1 requirements.
6.How does Aetrix verify that CLVC244AQDWRG4Q1 is sourced from the original manufacturer or authorized distributors?
All CLVC244AQDWRG4Q1 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 CLVC244AQDWRG4Q1 meets industry standards.
7.What is the process for return or replacement of CLVC244AQDWRG4Q1?
All CLVC244AQDWRG4Q1 units undergo pre-shipment inspection (PSI). If there is an issue with CLVC244AQDWRG4Q1, 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 CLVC244AQDWRG4Q1 part is unused and in its original packaging.
Return procedure for CLVC244AQDWRG4Q1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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