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Nexperia USA Inc. 74LVCH244ABQ-Q100X
- Part No.:
- 74LVCH244ABQ-Q100X
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
74LVCH244ABQ-Q100X.pdf
- Description:
- IC BUF NON-INVERT 3.6V 20DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,562
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Product details
Overview
74LVCH244ABQ-Q100 from Nexperia is an automotive-grade octal non-inverting 3-state buffer/line driver with bus hold on all data inputs, 1.2 V to 3.6 V supply operation, 5.5 V tolerant inputs, and DHVQFN20 (SOT764-1) package. It enables level translation between 3.3 V and 5 V logic domains in engine control units and ADAS sensor interfaces.
For engineers reviewing the 74LVCH244ABQ-Q100 datasheet, 74LVCH244ABQ-Q100 pinout, 74LVCH244ABQ-Q100 application, or 74LVCH244ABQ-Q100 equivalent, key selection criteria include bus hold functionality, AEC-Q100 Grade 1 qualification (-40 °C to +125 °C), 3-state timing (tpd ≤ 7.5 ns at 3.3 V), and DHVQFN20 thermal performance for space-constrained automotive PCBs.
Technical Context
This device implements two independent 4-bit non-inverting buffer groups (1A0–1A3 / 2A0–2A3), each controlled by dedicated active-low output enable inputs (1OE, 2OE). Schmitt-trigger inputs provide noise immunity against slow-rising signals common in automotive harnesses.
Bus hold circuitry actively maintains data input states without external pull-ups-critical for unconnected or floating lines in modular ECUs. The DHVQFN20 package features side-wettable flanks for AOI-compatible solder joint inspection in high-reliability automotive assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage range | 1.2 V to 3.6 V - supports low-power microcontrollers and mixed-voltage domain interfacing |
| Input voltage tolerance | Up to 5.5 V - enables direct connection to legacy 5 V sensors or CAN transceivers without level shifters |
| Propagation delay (tpd) | ≤ 7.5 ns at VCC = 3.3 V - ensures timing compliance in high-speed data acquisition paths |
| Bus hold current (IBHL/IBHH) | ±60 μA to ±75 μA - sustains valid logic levels on unused inputs, eliminating BOM cost of external resistors |
| Ambient temperature range | -40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood ECU deployment |
| ESD protection | HBM > 2000 V, CDM > 1000 V - meets automotive robustness requirements for handling and board assembly |
| Output drive strength | ±24 mA at VCC = 3.0 V - sufficient to drive 50 pF loads across PCB traces and connectors |
Pinout & Package
DHVQFN20 package (SOT764-1), 2.5 × 4.5 × 0.85 mm body, side-wettable flanks, no leads, 20-terminal layout with exposed thermal pad (GND-connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1Y0–1Y3, 2Y0–2Y3 (pins 12,14,16,18,3,5,7,9) | Buffered outputs (Group 1 & 2) | Non-inverting 3-state outputs; high-impedance when corresponding OE is HIGH |
| 1A0–1A3, 2A0–2A3 (pins 2,4,6,8,17,15,13,11) | Data inputs (Group 1 & 2) | Bus hold enabled on all eight inputs; accepts 0–5.5 V regardless of VCC |
| 1OE, 2OE (pins 1, 19) | Active-low output enable | Independent control of Group 1 and Group 2 outputs; enables selective bus isolation |
| VCC (pin 20) | Power supply | 1.2–3.6 V digital supply; powers internal logic and bus hold circuitry |
| GND (pin 10) | Ground reference | 0 V reference for all I/O and internal circuitry; thermal pad must be connected to GND plane |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 certified for -40 °C to +125 °C operation - validated for powertrain and chassis modules |
| Bus hold on data inputs | Eliminates need for 8 external pull-up/pull-down resistors - reduces BOM count and PCB area in distributed sensor nodes |
| 5.5 V tolerant I/O | Allows direct interface with 5 V analog front-ends or legacy microcontrollers without external level translators |
| Schmitt-trigger inputs | Improves noise margin on long harness runs - tolerates rise/fall times up to 20 ns/V at 1.2 V supply |
| DHVQFN20 with side-wettable flanks | Enables automated optical inspection of solder joints - critical for zero-defect automotive manufacturing standards |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Isolating diagnostic communication lines between MCU and OBD-II interface while maintaining signal integrity across temperature extremes. IC Role / Device Role / Timing Role: 3-state buffer enabling bidirectional UART/ISO 9141-2 signal routing with <7.5 ns propagation delay and bus hold on idle lines. Use Value: Prevents signal contention during firmware updates and eliminates external pull-ups on unused diagnostic pins, reducing component count by 8 resistors per IC. |
Use Scenario: Level-shifting camera sensor data lanes from 5 V image processors to 3.3 V SoC inputs in surround-view systems. IC Role / Device Role / Timing Role: Non-inverting buffer translating 5 V LVCMOS video clock and data signals into 3.3 V domain with sub-8 ns skew. Use Value: Enables direct connection without discrete level shifters, preserving timing margins and reducing interconnect jitter in multi-camera synchronization. |
| Body Control Module (BCM) | Electric Power Steering (EPS) |
Use Scenario: Driving multiple LIN transceiver enable lines from a single MCU GPIO bank in door module controllers. IC Role / Device Role / Timing Role: Octal buffer distributing enable signals with independent 3-state control per group to isolate faulted transceivers. Use Value: Allows hot-swap capability for LIN nodes and prevents bus lockup during individual transceiver failure - improves system-level fault tolerance. |
Use Scenario: Interfacing torque sensor analog conditioning circuitry (5 V powered) with 3.3 V ADC inputs in EPS motor control units. IC Role / Device Role / Timing Role: Input buffer with Schmitt-trigger action cleaning noisy analog sensor enable signals before ADC sampling. Use Value: Rejects EMI-induced glitches on long sensor harnesses, ensuring reliable torque signal acquisition even during high-current motor commutation events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC244ABQ-Q100 | No bus hold circuit; identical pinout, timing, and supply specs | Requires external pull-up resistors on unused inputs; less suitable for modular or field-upgradeable designs | Select when cost sensitivity outweighs design flexibility and BOM simplification benefits |
| SN74LVC244AQDRQ1 | TSSOP20 package (SOT360-1); same electrical specs but different thermal profile and AOI capability | Larger footprint and lower thermal conductivity than DHVQFN20; unsuitable for ultra-dense ECU layouts | Choose only if existing TSSOP reflow infrastructure prohibits DHVQFN20 adoption |
Compared with 74LVC244ABQ-Q100 and SN74LVC244AQDRQ1, the 74LVCH244ABQ-Q100 uniquely combines bus hold, DHVQFN20 AOI support, and AEC-Q100 Grade 1 in one package-delivering the highest integration density and lowest assembly risk for next-generation automotive electronics.
Availability
74LVCH244ABQ-Q100 is available at Aetrix Electronics and suitable for engine control units, ADAS sensor interfaces, body control modules, and electric power steering systems requiring stable component supply across extended temperature ranges and automotive lifecycle commitments.
Supply support for 74LVCH244ABQ-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, analog, and MOSFET solutions optimized for automotive, industrial, and mobile applications with emphasis on reliability and energy efficiency.
This device belongs to Nexperia's automotive-qualified LVC/LVCH logic family, designed specifically for robust signal buffering and level translation in harsh-environment vehicle subsystems where AEC-Q100 compliance and thermal resilience are mandatory.
FAQ
What is the function of the bus hold circuit in the 74LVCH244ABQ-Q100?
The bus hold circuit actively maintains the last valid logic state on each data input (1A0–1A3, 2A0–2A3) when the input is floating or disconnected, drawing ±60–75 μA to sustain voltage levels. It eliminates the need for external pull-up or pull-down resistors, reducing BOM cost and PCB area-particularly valuable in modular automotive ECUs with configurable I/O.
Can the 74LVCH244ABQ-Q100 interface directly with 5 V TTL devices?
Yes-the device accepts input voltages up to 5.5 V regardless of VCC (1.2–3.6 V), and its outputs are 5 V tolerant in 3-state mode. This allows direct connection to 5 V TTL or CMOS logic without level-shifting components, making it suitable for bridging legacy 5 V subsystems (e.g., instrument clusters) with modern 3.3 V MCUs in automotive gateways.
How does the DHVQFN20 package improve manufacturability in automotive production?
The SOT764-1 DHVQFN20 package features side-wettable flanks that enable automated optical inspection (AOI) of solder joints-a critical requirement for zero-defect automotive assembly. Its 2.5 × 4.5 mm footprint and 0.85 mm height also support high-density placement in space-constrained engine control units, while the exposed thermal pad improves heat dissipation under continuous 125 °C ambient conditions.
What is the maximum propagation delay at 125 °C ambient temperature?
At VCC = 3.3 V and Tamb = +125 °C, the maximum propagation delay (tpd) is 7.5 ns for input-to-output transitions and 9.5 ns for enable-to-output transitions (ten), as specified in Table 7 of the datasheet. These values are guaranteed across the full AEC-Q100 Grade 1 temperature range and form the basis for timing closure in real-time automotive control loops.
74LVCH244ABQ-Q100X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVCH
- 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:
- 24mA, 24mA
- Voltage - Supply:
- 1.2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-DHVQFN (4.5x2.5)
74LVCH244ABQ-Q100X FAQ
1.How can I place an order for 74LVCH244ABQ-Q100X through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVCH244ABQ-Q100X 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 74LVCH244ABQ-Q100X reliable?
The price and inventory of 74LVCH244ABQ-Q100X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVCH244ABQ-Q100X is usually 5 days.
3.What payment methods are accepted for 74LVCH244ABQ-Q100X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVCH244ABQ-Q100X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVCH244ABQ-Q100X?
74LVCH244ABQ-Q100X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVCH244ABQ-Q100X 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 74LVCH244ABQ-Q100X?
For technical support, including 74LVCH244ABQ-Q100X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVCH244ABQ-Q100X requirements.
6.How does Aetrix verify that 74LVCH244ABQ-Q100X is sourced from the original manufacturer or authorized distributors?
All 74LVCH244ABQ-Q100X 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 74LVCH244ABQ-Q100X meets industry standards.
7.What is the process for return or replacement of 74LVCH244ABQ-Q100X?
All 74LVCH244ABQ-Q100X units undergo pre-shipment inspection (PSI). If there is an issue with 74LVCH244ABQ-Q100X, 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 74LVCH244ABQ-Q100X part is unused and in its original packaging.
Return procedure for 74LVCH244ABQ-Q100X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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