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Texas Instruments SN74LV244AQWRKSRQ1
- Part No.:
- SN74LV244AQWRKSRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
SN74LV244AQWRKSRQ1.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V 20VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,628
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Product details
Overview
SN74LV244AQWRKSRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive octal buffer/driver IC with dual 4-channel banks, 3-state outputs, 2 V–5.5 V supply operation, 6.5 ns max propagation delay at 5 V, and Ioff partial-power-down support - used for signal routing and bus isolation in engine control units and ADAS domain controllers.
For engineers reviewing the SN74LV244AQWRKSRQ1 datasheet, SN74LV244AQWRKSRQ1 pinout, SN74LV244AQWRKSRQ1 application, or SN74LV244AQWRKSRQ1 equivalent, key selection criteria include automotive temperature range (–40°C to +125°C), WRKS WQFN-20 wettable-flank package compatibility, mixed-voltage interface capability, and bank-level 3-state control via independent OE pins.
Technical Context
The SN74LV244AQWRKSRQ1 implements two independent 4-bit noninverting buffer banks, each controlled by a dedicated active-low output enable (1OE/2OE). Its CMOS architecture supports bidirectional voltage translation across banks - inputs tolerate up to 5.5 V regardless of VCC, enabling mixed-mode interfacing between 3.3 V and 5 V subsystems.
It integrates Ioff circuitry that disables all outputs and limits leakage to ≤5 µA when VCC = 0 V, preventing backflow current during power sequencing. The device uses balanced push-pull outputs capable of sourcing/sinking ±16 mA at 5 V, with defined VOL/VOH performance across –40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 5.5 V - enables direct interface with 2.5 V, 3.3 V, and 5 V logic domains without level shifters. |
| tpd (max) | 6.5 ns at VCC = 5 V, CL = 15 pF - ensures timing compliance in high-speed automotive data paths (e.g., sensor multiplexing). |
| Operating Temp | –40°C to +125°C (Grade 1) - qualified for under-hood and safety-critical ECU environments per AEC-Q100. |
| Ioff Leakage | ≤5 µA at VCC = 0 V - guarantees safe partial-power-down operation during controller reset or sleep mode. |
| Output Drive | ±16 mA at VCC = 5 V - sufficient to drive 50 pF loads and standard CMOS/TTL inputs without external buffers. |
| ESD Rating | HBM ±4 kV, CDM ±2 kV - meets automotive robustness requirements for assembly and field operation. |
| Input Voltage Range | 0 V to 5.5 V - allows 5 V-tolerant inputs even when VCC = 2.5 V, supporting legacy interface coexistence. |
Pinout & Package
SN74LV244AQWRKSRQ1 is packaged in a 20-pin WQFN (WRKS) with 0.4 mm pitch, 4.50 mm × 2.50 mm body size, and wettable flanks for AOI-compatible solder joint inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Active-low bank enable inputs | Control 4-channel output groups independently; tie to VCC via pull-up for power-up high-impedance safety. |
| 1A1–1A4, 2A1–2A4 | Buffer input terminals | Noninverting inputs for respective banks; CMOS-compatible with rail-to-rail voltage tolerance. |
| 1Y1–1Y4, 2Y1–2Y4 | 3-state buffered outputs | Drive external loads only when OE is low; enter high-Z state otherwise to prevent bus contention. |
| VCC (Pin 20) | Positive supply | Single supply powers both banks; bypass with 0.1 µF capacitor placed adjacent to pin. |
| GND (Pin 10) | Ground reference | Common return path for all I/O and supply currents; requires low-impedance PCB plane connection. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for continuous operation from –40°C to +125°C ambient, meeting automotive reliability and lifetime requirements. |
| Wettable-flank WRKS package | Enables automated optical inspection (AOI) of side-solder fillets, improving manufacturing yield and traceability in automotive SMT lines. |
| Mixed-mode voltage interface | Accepts 0–5.5 V inputs irrespective of VCC setting - eliminates need for external level translators in multi-rail systems. |
| Bank-selectable 3-state control | Two independent OE pins allow staggered bus arbitration or selective channel shutdown without affecting other bank functionality. |
| Ioff partial-power-down protection | Prevents damaging current flow between powered and unpowered sections during hot-plug or power sequencing events. |
Applications
| Engine Control Unit (ECU) Signal Routing | ADAS Camera Interface Buffering |
|---|---|
Use Scenario: Isolating sensor data lines (e.g., crankshaft position, knock sensor) from microcontroller GPIO during reset or firmware update. IC Role / Device Role / Timing Role: Octal buffer providing directionally transparent signal pass-through with bank-level 3-state control synchronized to MCU reset assertion. Use Value: Prevents bus contention and invalid reads during controller initialization; maintains signal integrity across 12 cm+ traces using 6.5 ns tpd timing margin. |
Use Scenario: Driving parallel LVDS or CMOS image sensor data lanes to SoC input receivers in surround-view camera modules. IC Role / Device Role / Timing Role: Level-translating buffer enabling 3.3 V sensor outputs to interface with 5 V tolerant SoC inputs while maintaining skew <1.5 ns. Use Value: Eliminates need for discrete level shifters; wettable-flank WRKS package supports IPC-A-610 Class 3 automotive assembly standards. |
| Body Control Module (BCM) Switch Debouncing | Automotive Infotainment Display Multiplexing |
Use Scenario: Conditioning mechanical switch inputs (e.g., door lock, mirror adjustment) before feeding to low-voltage MCU GPIO. IC Role / Device Role / Timing Role: Digital buffer with Ioff support holding stable high-Z state during BCM deep-sleep mode to minimize quiescent current. Use Value: Reduces system standby current by blocking leakage paths; ±16 mA drive strength handles capacitive switch node loads without external RC networks. |
Use Scenario: Time-multiplexing multiple display panel control signals (e.g., backlight PWM, touch controller I²C) onto shared MCU pins. IC Role / Device Role / Timing Role: Bank-isolated buffer enabling dynamic reconfiguration of display interface resources without software overhead. Use Value: Dual OE control allows real-time switching between display sub-systems; 2 V–5.5 V operation matches diverse panel voltage rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC244AQPWRQ1 | Lower VCC min (1.65 V), higher speed (4.2 ns tpd @ 3.3 V), but no wettable flanks in PW package. | Preferred for 1.8 V–3.3 V-only systems requiring tighter timing; unsuitable where AOI inspection of QFN side joints is mandated. | Select when operating exclusively below 3.6 V and board-level AOI is not required. |
| MC74VHC244DTG | Non-automotive grade (no AEC-Q100), wider VCC (2–5.5 V), same pinout but DIP-20 package only. | Limited to prototyping or non-safety-critical industrial use; lacks thermal metrics and automotive qualification documentation. | Use only for bench validation or cost-sensitive non-automotive designs where WRKS packaging is unnecessary. |
Compared with SN74LV244AQWRKSRQ1, SN74LVC244AQPWRQ1 offers faster timing at lower voltages but sacrifices manufacturability assurance, while MC74VHC244DTG provides functional equivalence without automotive compliance - making SN74LV244AQWRKSRQ1 the sole choice for production-grade WRKS-packaged, AEC-Q100-compliant octal buffering.
Availability
SN74LV244AQWRKSRQ1 is available at Aetrix Electronics and suitable for engine control units, ADAS camera interfaces, body control modules, and infotainment display multiplexing requiring stable component supply across automotive production lifecycles.
Supply support for SN74LV244AQWRKSRQ1 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-grade logic solutions with over 50 years of automotive qualification experience.
The SN74LV244AQWRKSRQ1 belongs to TI's automotive-qualified LV family of low-voltage logic devices, designed specifically for robust signal conditioning in harsh-temperature vehicle subsystems including powertrain, chassis, and driver-assistance systems.
FAQ
What is the maximum operating temperature for SN74LV244AQWRKSRQ1?
The SN74LV244AQWRKSRQ1 is rated for continuous operation from –40°C to +125°C ambient temperature as an AEC-Q100 Grade 1 automotive device. This specification is validated across all electrical parameters in the datasheet and applies to the WRKS WQFN-20 package under recommended operating conditions.
Does SN74LV244AQWRKSRQ1 support partial-power-down mode?
Yes, SN74LV244AQWRKSRQ1 includes Ioff circuitry that disables all outputs and limits leakage current to ≤5 µA when VCC = 0 V. This feature prevents backflow current during power sequencing or controller reset, making it suitable for systems requiring safe partial-power-down behavior.
Can SN74LV244AQWRKSRQ1 interface between 3.3 V and 5 V logic domains?
Yes, SN74LV244AQWRKSRQ1 supports mixed-mode voltage operation: its inputs tolerate 0–5.5 V regardless of VCC setting, and outputs swing rail-to-rail. When VCC = 3.3 V, it can accept 5 V inputs and drive 3.3 V–compatible loads - eliminating external level shifters in many automotive interfaces.
What is the purpose of the wettable flanks on the SN74LV244AQWRKSRQ1 WRKS package?
The wettable flanks on the SN74LV244AQWRKSRQ1 WRKS package provide enhanced side-solder fillet formation during reflow, enabling reliable automated optical inspection (AOI) of solder joints. This feature improves process control and defect detection in high-reliability automotive SMT assembly lines.
How many independent output enable controls does SN74LV244AQWRKSRQ1 have?
SN74LV244AQWRKSRQ1 has two independent active-low output enable pins: 1OE controls outputs 1Y1–1Y4 (Bank 1), and 2OE controls outputs 2Y1–2Y4 (Bank 2). This allows selective 3-state control of either four-channel group without affecting the other, supporting flexible bus arbitration schemes.
SN74LV244AQWRKSRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-VFQFN Exposed Pad
- 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:
- 16mA, 16mA
- Voltage - Supply:
- 2V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 20-VQFN (2.5x4.5)
SN74LV244AQWRKSRQ1 FAQ
1.How can I place an order for SN74LV244AQWRKSRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LV244AQWRKSRQ1 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 SN74LV244AQWRKSRQ1 reliable?
The price and inventory of SN74LV244AQWRKSRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LV244AQWRKSRQ1 is usually 5 days.
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4.How is shipping managed for SN74LV244AQWRKSRQ1?
SN74LV244AQWRKSRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LV244AQWRKSRQ1 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 SN74LV244AQWRKSRQ1?
For technical support, including SN74LV244AQWRKSRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LV244AQWRKSRQ1 requirements.
6.How does Aetrix verify that SN74LV244AQWRKSRQ1 is sourced from the original manufacturer or authorized distributors?
All SN74LV244AQWRKSRQ1 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 SN74LV244AQWRKSRQ1 meets industry standards.
7.What is the process for return or replacement of SN74LV244AQWRKSRQ1?
All SN74LV244AQWRKSRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LV244AQWRKSRQ1, 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 SN74LV244AQWRKSRQ1 part is unused and in its original packaging.
Return procedure for SN74LV244AQWRKSRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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