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Nexperia USA Inc. 74HCT244BQ-Q100,11
- Part No.:
- 74HCT244BQ-Q100,11
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
74HCT244BQ-Q100,11.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,876
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Product details
Overview
74HCT244BQ-Q100 from Nexperia is an automotive-grade octal non-inverting 3-state buffer/line driver in DHVQFN20 package, operating from 4.5 V to 5.5 V, with TTL-compatible inputs, ±7.8 mA output drive, and guaranteed operation from −40 °C to +125 °C. It serves as bidirectional bus interface logic in engine control units (ECUs) and body control modules (BCMs), enabling isolation of microcontroller I/O banks from noisy power domains.
For engineers reviewing the 74HCT244BQ-Q100 datasheet, 74HCT244BQ-Q100 pinout, 74HCT244BQ-Q100 application, or 74HCT244BQ-Q100 equivalent, key selection criteria include TTL-level input compatibility, dual independent 3-state enable control (1OE/2OE), propagation delay ≤22 ns at 4.5 V, high-impedance OFF-state leakage <±5 μA, and AEC-Q100 Grade 1 qualification for under-hood deployment.
Technical Context
This device implements two independent 4-bit non-inverting buffer sections, each controlled by a dedicated active-low output enable (1OE for Y0–Y3, 2OE for Y0'–Y3'). The TTL-input threshold (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V) ensures robust interfacing with legacy 5 V microcontrollers and ASICs without level-shifting.
Its CMOS output stage delivers rail-to-rail swing with VOH ≥3.98 V and VOL ≤0.26 V at IO = ±6 mA, while input clamp diodes support safe overvoltage tolerance up to VCC + 0.5 V. The DHVQFN20 package provides thermal enhancement and AOI-compatible side-wettable flanks for automotive reflow reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Matches standard automotive 5 V rail; avoids brown-out during cold-crank transients. |
| Input Logic Type | TTL-compatible - Accepts 0.8 V/2.0 V thresholds; interoperable with legacy 5 V MCUs without external biasing. |
| Propagation Delay | 13 ns (typ), 33 ns (max) at VCC = 4.5 V - Enables reliable 30 MHz bus operation with timing margin. |
| Output Drive | ±6 mA - Sufficient to drive 50 pF loads across PCB traces and multiple gate inputs in ECU backplanes. |
| 3-State Leakage | ±5.0 μA max at −40 °C to +125 °C - Ensures minimal current injection into disabled subsystems during sleep modes. |
| AEC-Q100 Grade | Grade 1 (−40 °C to +125 °C) - Qualified for powertrain and chassis applications per automotive stress test requirements. |
| ESD Robustness | HBM >2000 V, CDM >1000 V - Withstands assembly handling and in-vehicle electrostatic events without latch-up. |
Pinout & Package
DHVQFN20 (SOT764-1) package: 2.5 mm × 4.5 mm × 0.85 mm body, no leads, side-wettable flanks for automated optical inspection, exposed thermal pad (non-soldered or floating/grounded per layout).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low enables for Group 1 (Y0–Y3) and Group 2 (Y0'–Y3') outputs; independent control allows staggered bus arbitration. |
| 2, 4, 6, 8 | 1A0–1A3 | Inputs for first 4-bit buffer group; routed to corresponding 1Y0–1Y3 outputs when 1OE = LOW. |
| 11, 13, 15, 17 | 2A0–2A3 | Inputs for second 4-bit buffer group; routed to 2Y0–2Y3 outputs when 2OE = LOW. |
| 12, 14, 16, 18 | 1Y0–1Y3 | Non-inverting 3-state outputs for Group 1; high-impedance when 1OE = HIGH. |
| 3, 5, 7, 9 | 2Y0–2Y3 | Non-inverting 3-state outputs for Group 2; high-impedance when 2OE = HIGH. |
| 10 | GND | Reference ground (0 V); must be low-inductance connection to minimize switching noise coupling. |
| 20 | VCC | Positive supply (4.5–5.5 V); requires local 100 nF ceramic decoupling adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40 °C to +125 °C operation with full temperature cycling, HTOL, and ESD testing per automotive standards. |
| Dual independent 3-state control | Separate 1OE/2OE pins allow selective activation of either 4-bit segment-critical for time-multiplexed CAN/LIN transceiver data routing. |
| TTL-compatible input thresholds | VIH ≥2.0 V, VIL ≤0.8 V at 5 V supply-ensures clean logic recognition from legacy 5 V peripherals without pull-ups or translators. |
| Clamp diode protected inputs | Enables direct interface to signals exceeding VCC (e.g., 12 V sensor lines) when used with current-limiting resistors. |
| DHVQFN20 with side-wettable flanks | Supports automated optical inspection of solder joints-mandatory for zero-defect automotive manufacturing audits. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Isolating MCU GPIO banks from high-noise injector driver circuits during transient load switching. IC Role / Device Role / Timing Role: Bidirectional 3-state buffer enabling time-gated communication between 32-bit ARM core and discrete power FET drivers. Use Value: Prevents ground bounce-induced false triggering via high-impedance isolation during critical ignition timing windows. |
Use Scenario: Level-shifting and bus buffering between 5 V microcontroller and 12 V door lock actuator interface ICs. IC Role / Device Role / Timing Role: Non-inverting octal driver translating logic signals while maintaining signal integrity across long harness runs. Use Value: Delivers 6 mA drive into 50 pF + 1 kΩ loads, ensuring <15 ns rise/fall times despite cable capacitance. |
| Advanced Driver Assistance Systems (ADAS) Camera Interface | Automotive Infotainment Display Backlight Control |
Use Scenario: Multiplexing parallel image data lanes from dual camera sensors onto shared MIPI CSI-2 serializer input buffers. IC Role / Device Role / Timing Role: Dual-group 3-state buffer synchronizing pixel clock-aligned data bursts from redundant vision sensors. Use Value: 22 ns max propagation delay preserves setup/hold margins for 100 MHz pixel clocks in safety-critical vision fusion paths. |
Use Scenario: Driving PWM-controlled LED backlight strings in instrument cluster displays where EMI must be minimized. IC Role / Device Role / Timing Role: Low-noise 3-state buffer isolating MCU PWM outputs from high-current LED driver ICs during dimming transitions. Use Value: ±5 μA OFF-state leakage prevents unintended LED glow during display sleep states, meeting UNECE R128 dark-mode compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HCT244QPWRQ1 | TSSOP20 package (SOT360-1); same electrical specs but 4.4 mm body width vs. 2.5 mm × 4.5 mm DHVQFN. | Larger footprint; less suitable for space-constrained ADAS camera modules requiring ultra-thin packaging. | Select when board real estate permits and AOI of side-wettable flanks is not required. |
| 74HCT244D-Q100 | SO20 package (SOT163-1); 7.5 mm body width, higher thermal resistance (12.3 mW/K derating above 109 °C). | Lower power density handling; unsuitable for under-hood ECU locations with ambient >105 °C. | Choose only for legacy designs with existing SO20 footprints and lower ambient temperature zones. |
Compared with SN74HCT244QPWRQ1 and 74HCT244D-Q100, the 74HCT244BQ-Q100 offers superior thermal performance and miniaturization for next-gen automotive electronics, while retaining identical logic behavior and AEC-Q100 qualification-making it optimal for new designs targeting ASIL-B functional safety partitions.
Availability
74HCT244BQ-Q100 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera interfaces, and infotainment display systems requiring stable component supply across automotive production lifecycles.
Supply support for 74HCT244BQ-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.
The 74HCT244BQ-Q100 belongs to Nexperia's AEC-Q100-qualified logic portfolio, engineered specifically for robust signal integrity and thermal resilience in harsh automotive environments including powertrain and chassis control systems.
FAQ
Is the 74HCT244BQ-Q100 pin-compatible with the 74HC244BQ-Q100?
Yes-both share identical DHVQFN20 pinout and function table, but differ in input voltage thresholds: 74HCT244BQ-Q100 accepts TTL levels (VIH ≥2.0 V), while 74HC244BQ-Q100 requires CMOS levels (VIH ≥3.15 V at 4.5 V). Swapping requires verification of driving source compatibility.
What is the maximum allowable output load capacitance for stable operation?
The device is characterized up to 50 pF load capacitance per output (per Table 9 test conditions). At CL = 50 pF and VCC = 4.5 V, propagation delay remains ≤33 ns and transition time ≤18 ns-ensuring timing compliance for 20 MHz bus rates with margin.
Does the exposed thermal pad on the DHVQFN20 package require soldering?
No-per datasheet note (1), the thermal pad has no electrical or mechanical requirement to be soldered. If connected, it must remain electrically floating or tied to GND; intentional grounding improves thermal dissipation but is optional for functional operation.
Can 1OE and 2OE be tied together for single-enable operation?
Yes-connecting 1OE and 2OE simplifies control logic and enables simultaneous 8-bit buffering. However, this eliminates independent group isolation, which is essential for time-multiplexed bus architectures like those in multi-sensor ADAS systems.
74HCT244BQ-Q100,11 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- 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:
- 6mA, 6mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-DHVQFN (4.5x2.5)
74HCT244BQ-Q100,11 FAQ
1.How can I place an order for 74HCT244BQ-Q100,11 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT244BQ-Q100,11 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 74HCT244BQ-Q100,11 reliable?
The price and inventory of 74HCT244BQ-Q100,11 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT244BQ-Q100,11 is usually 5 days.
3.What payment methods are accepted for 74HCT244BQ-Q100,11?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT244BQ-Q100,11 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT244BQ-Q100,11?
74HCT244BQ-Q100,11 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT244BQ-Q100,11 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 74HCT244BQ-Q100,11?
For technical support, including 74HCT244BQ-Q100,11 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT244BQ-Q100,11 requirements.
6.How does Aetrix verify that 74HCT244BQ-Q100,11 is sourced from the original manufacturer or authorized distributors?
All 74HCT244BQ-Q100,11 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 74HCT244BQ-Q100,11 meets industry standards.
7.What is the process for return or replacement of 74HCT244BQ-Q100,11?
All 74HCT244BQ-Q100,11 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT244BQ-Q100,11, 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 74HCT244BQ-Q100,11 part is unused and in its original packaging.
Return procedure for 74HCT244BQ-Q100,11:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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