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Nexperia USA Inc. 74AHCT273BQ-Q100X
- Part No.:
- 74AHCT273BQ-Q100X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
74AHCT273BQ-Q100X.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,555
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Product details
Overview
74AHCT273BQ-Q100 from Nexperia is an automotive-grade octal positive-edge-triggered D-type flip-flop with synchronous data capture and asynchronous master reset (MR). It operates across -40 °C to +125 °C, supports 4.5–5.5 V supply, features TTL-level inputs, and delivers propagation delay as low as 4.0 ns (CL = 15 pF) for reliable clock-domain synchronization in engine control units and ADAS sensor interfaces.
For engineers reviewing the 74AHCT273BQ-Q100 datasheet, 74AHCT273BQ-Q100 pinout, 74AHCT273BQ-Q100 application, or 74AHCT273BQ-Q100 equivalent, this device serves as a robust, AEC-Q100 Grade 1–qualified register for high-noise automotive digital subsystems requiring deterministic edge-triggered state capture and fail-safe reset behavior.
Technical Context
This device implements eight independent D-type flip-flops sharing a common clock (CP) and active-low master reset (MR), enabling simultaneous latching of 8-bit parallel data on each LOW-to-HIGH CP transition. Input setup/hold times are fixed at 3.0 ns/1.0 ns respectively over full temperature and voltage range.
All inputs tolerate up to 5.5 V regardless of VCC, supporting mixed-voltage interfacing with legacy 5 V logic or microcontroller GPIOs. Outputs drive ±8 mA loads with VOH ≥ 3.94 V and VOL ≤ 0.36 V at VCC = 4.5 V, ensuring clean signal integrity in noisy under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | AHCT - TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max) enable direct connection to 5 V microcontrollers without level shifters. |
| Supply Voltage Range | 4.5–5.5 V - Matches automotive 5 V rail tolerances; supports operation during cold-crank transients down to 4.5 V. |
| Propagation Delay (tpd) | 4.0 ns (typ, CL = 15 pF, VCC = 5 V) - Enables reliable operation up to 100 MHz maximum frequency in timing-critical control loops. |
| Input Overvoltage Tolerance | 5.5 V absolute max - Allows safe interfacing with 5 V signals even when VCC is powered down or at 3.3 V. |
| Operating Temperature | -40 °C to +125 °C - Qualified per AEC-Q100 Grade 1 for under-hood placement in powertrain and chassis modules. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - Meets stringent automotive ESD immunity requirements for assembly and field reliability. |
| Power Dissipation | ICC ≤ 4.0 μA (typ, VCC = 5.5 V, static) - Ultra-low quiescent current minimizes system-level power budget impact. |
Pinout & Package
DHVQFN20 package (SOT764-1): 2.5 × 4.5 × 0.85 mm body, side-wettable flanks for AOI-compatible solder joint inspection, thermal-enhanced construction for automotive under-hood thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (MR) | Master Reset input | Asynchronous active-LOW reset forcing all Q outputs LOW independently of clock; critical for fail-safe system initialization. |
| 2–9, 12–19 (D0–D7, Q0–Q7) | Data inputs / Flip-flop outputs | Eight independent D/Q pairs; Dn sampled on CP rising edge; Qn reflects prior Dn state after tpd delay. |
| 10 (GND) | Ground reference | 0 V return path; internal die substrate connection; must be low-impedance for noise immunity and timing stability. |
| 11 (CP) | Clock input | LOW-to-HIGH edge-triggered; defines precise sampling instant for all eight flip-flops simultaneously. |
| 20 (VCC) | Supply voltage | Primary power rail; decoupling capacitor required within 10 mm for stable switching performance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use from -40 °C to +125 °C ambient, including lifetime reliability testing per stress conditions. |
| Overvoltage-tolerant inputs | Accepts 0–5.5 V input signals regardless of VCC level - enables seamless integration into mixed-supply systems. |
| High noise immunity | Guaranteed 0.4 V noise margin at VCC = 4.5 V due to Schmitt-trigger input action and balanced threshold design. |
| Common clock and reset | Single CP and MR pins simplify PCB routing and reduce timing skew across all eight channels in safety-critical paths. |
| Low dynamic power | CPD = 18 pF - minimizes switching power consumption in high-frequency applications like CAN/LIN bus interface buffering. |
Applications
| Engine Control Unit (ECU) I/O Expansion | ADAS Camera Sensor Interface |
|---|---|
|
Use Scenario: Latching diagnostic status bits from multiple sensors before transmission via CAN FD. IC Role / Device Role / Timing Role: Synchronous 8-bit register capturing parallel sensor flags on ECU clock edge with deterministic timing. Use Value: Eliminates metastability risk during multi-sensor readout; MR ensures known state after power-on reset or fault recovery. |
Use Scenario: Buffering pixel data streams from image sensors before serialization to MIPI CSI-2 transmitter. IC Role / Device Role / Timing Role: Edge-aligned data staging element synchronizing asynchronous sensor output to system clock domain. Use Value: Reduces jitter-induced bit errors in high-speed imaging pipelines; TTL input compatibility avoids external level shifters. |
| Electric Power Steering (EPS) Motor Control | Automotive Infotainment Display Driver |
|
Use Scenario: Capturing torque feedback signals from Hall-effect sensors for closed-loop motor current regulation. IC Role / Device Role / Timing Role: Deterministic sampling node aligning analog-to-digital converter outputs to PWM update cycles. Use Value: Ensures sub-microsecond timing correlation between sensor input and actuator command, improving steering responsiveness. |
Use Scenario: Holding display refresh data for segmented LCD drivers in instrument clusters. IC Role / Device Role / Timing Role: Parallel-to-serial interface buffer isolating MCU GPIOs from capacitive display load. Use Value: Prevents display flicker during MCU interrupt servicing; MR allows synchronized blanking during firmware updates. |
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 |
|---|---|---|---|
| 74AHC273BQ-Q100 | CMOS-level inputs (VIH = 3.85 V @ VCC = 5.5 V); lower ICC (4 μA typ); 6.0 ns tpd (VCC = 5 V) | Better suited for 3.3 V–5 V mixed-signal domains where input voltage margins are tighter | Select when interfacing with CMOS microcontrollers or when ultra-low static power is prioritized over TTL compatibility. |
| SN74LVC273PWR | 3.3 V only (1.65–3.6 V); LVCMOS inputs; higher speed (3.3 ns tpd); no AEC-Q100 qualification | Limited to non-automotive or cabin-only applications with strict 3.3 V rails | Choose only for cost-sensitive consumer or industrial designs lacking automotive qualification requirements. |
Compared with 74AHC273BQ-Q100 and SN74LVC273PWR, the 74AHCT273BQ-Q100 uniquely balances AEC-Q100 compliance, 5 V TTL interoperability, and sub-5 ns propagation delay - making it the sole qualified option for under-hood timing-critical register functions.
Availability
74AHCT273BQ-Q100 is available at Aetrix Electronics and suitable for engine control units, ADAS sensor interfaces, and electric power steering systems requiring stable component supply across extended automotive temperature ranges and long production lifecycles.
Supply support for 74AHCT273BQ-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 specializing in high-performance, high-reliability logic, analog, and discrete components, with deep expertise in automotive qualification and manufacturing scalability.
The 74AHCT273BQ-Q100 belongs to Nexperia's automotive-qualified logic portfolio, engineered specifically for robust digital signal registration in harsh automotive environments where deterministic timing and fail-safe reset are mandatory.
FAQ
What is the minimum pulse width required on the MR pin to ensure reliable reset?
The MR pin requires a minimum LOW pulse width of 5.0 ns at VCC = 4.5–5.5 V and 6.0 ns at VCC = 3.0–3.6 V across the full -40 °C to +125 °C operating range. This specification ensures complete reset assertion across worst-case voltage and temperature corners without requiring external pulse stretching.
Can the 74AHCT273BQ-Q100 operate reliably with a 3.3 V supply?
No - the 74AHCT273BQ-Q100 is specified only for 4.5–5.5 V operation. Its TTL-compatible input thresholds (VIH = 2.0 V min) are optimized for 5 V systems; applying 3.3 V violates recommended operating conditions and risks unreliable logic recognition, especially at temperature extremes.
How does the DHVQFN20 package improve thermal performance in automotive applications?
The DHVQFN20 (SOT764-1) package features an exposed thermal pad and thin 0.85 mm profile, achieving 12.9 mW/K derating above 111 °C. This enables sustained 125 °C operation with lower junction temperature rise compared to SO20 or TSSOP20, critical for under-hood ECU modules with limited airflow.
Is the GND pad (Pin 10) required to be soldered to the PCB ground plane?
No - the GND pad (Pin 10) has no electrical or mechanical requirement to be soldered. If connected, it must remain floating or tied to system GND; improper grounding can introduce noise coupling or thermal stress. The functional ground connection is provided through Pin 10's internal bond wire, not the thermal pad.
74AHCT273BQ-Q100X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHCT
- Package/Case:
- 20-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Master Reset
- Type:
- D-Type
- Output Type:
- Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 75 MHz
- Max Propagation Delay @ V, Max CL:
- 9.2ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 4 µA
- Input Capacitance:
- 3 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-DHVQFN (4.5x2.5)
74AHCT273BQ-Q100X FAQ
1.How can I place an order for 74AHCT273BQ-Q100X through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT273BQ-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 74AHCT273BQ-Q100X reliable?
The price and inventory of 74AHCT273BQ-Q100X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT273BQ-Q100X is usually 5 days.
3.What payment methods are accepted for 74AHCT273BQ-Q100X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT273BQ-Q100X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT273BQ-Q100X?
74AHCT273BQ-Q100X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT273BQ-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 74AHCT273BQ-Q100X?
For technical support, including 74AHCT273BQ-Q100X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT273BQ-Q100X requirements.
6.How does Aetrix verify that 74AHCT273BQ-Q100X is sourced from the original manufacturer or authorized distributors?
All 74AHCT273BQ-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 74AHCT273BQ-Q100X meets industry standards.
7.What is the process for return or replacement of 74AHCT273BQ-Q100X?
All 74AHCT273BQ-Q100X units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT273BQ-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 74AHCT273BQ-Q100X part is unused and in its original packaging.
Return procedure for 74AHCT273BQ-Q100X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74AHCT273BQ-Q100X Tags
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SN74HC74DR
Texas Instruments
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74LVC1G74GT,115
Nexperia USA Inc.
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CD4013BM96
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SN74HCT273PWR
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SN74HC574DWR
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74LVC1G74DC,125
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SN74HC273DWR
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SN74HCT574DWR
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SN74LVC1G74DCTR
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