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Nexperia USA Inc. 74AHC273BQ-Q100X
- Part No.:
- 74AHC273BQ-Q100X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
74AHC273BQ-Q100X.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,317
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Product details
Overview
74AHC273BQ-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 2.0–5.5 V supply, supports -40 °C to +125 °C ambient, features overvoltage-tolerant inputs up to 5.5 V, and delivers propagation delay as low as 4.2 ns (VCC = 5.0 V, CL = 15 pF). It is used in automotive body control modules for latching sensor interface signals prior to microcontroller sampling.
For engineers reviewing the 74AHC273BQ-Q100 datasheet, 74AHC273BQ-Q100 pinout, 74AHC273BQ-Q100 application, or 74AHC273BQ-Q100 equivalent, this page provides verified functional identity, validated DHVQFN20 pin mapping, confirmed AEC-Q100 Grade 1 qualification, exact timing parameters (tsu = 3.0 ns, th = 1.0 ns), and real-world automotive use context - all derived from Nexperia's official Rev. 3 product data sheet (2023).
Technical Context
This device implements eight independent D-type flip-flops sharing a common clock (CP) and active-low master reset (MR). Each flip-flop captures Dn input state on the LOW-to-HIGH CP transition, provided setup and hold time requirements are met. MR forces all Qn outputs LOW regardless of CP or Dn states, enabling system-level initialization.
Input logic levels are CMOS-compatible (VIH ≥ 3.85 V at VCC = 5.5 V; VIL ≤ 1.65 V), and inputs tolerate up to 5.5 V independently of VCC - enabling mixed-voltage interfacing between 3.3 V controllers and 5 V peripherals. All inputs include Schmitt-trigger action for noise immunity in electrically harsh automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Octal D-type flip-flop with common clock and asynchronous master reset |
| Supply Voltage Range | 2.0 V to 5.5 V - supports direct interfacing with 3.3 V and 5 V logic domains |
| Operating Temperature | -40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood automotive use |
| Propagation Delay (tpd) | 4.2 ns max (VCC = 5.0 V, CL = 15 pF) - enables >100 MHz operation in high-speed control loops |
| Set-up / Hold Time | tsu = 3.0 ns, th = 1.0 ns (VCC = 4.5–5.5 V) - ensures reliable sampling of fast-changing sensor or bus signals |
| Input Overvoltage Tolerance | Inputs rated to 5.5 V regardless of VCC - eliminates need for external level-shifting in mixed-rail systems |
| ESD Protection | HBM >2000 V, CDM >1000 V - meets automotive robustness requirements for assembly and field operation |
Pinout & Package
DHVQFN20 package (SOT764-1), 2.5 × 4.5 × 0.85 mm body, side-wettable flanks for AOI-compatible solder joint inspection. Exposed thermal pad (terminal 1 index area) may be left floating or connected to GND per layout guidance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | MR | Active-low master reset - forces all Qn outputs LOW asynchronously, overriding clock and data |
| 2 | Q0 | Output of first flip-flop - latched value of D0 sampled on rising CP edge |
| 3 | D0 | Data input for first flip-flop - must meet tsu/th relative to CP edge |
| 4 | D1 | Data input for second flip-flop - independent channel, same timing constraints as D0 |
| 5 | Q1 | Output of second flip-flop - synchronized copy of D1 valid after tpd |
| 6 | Q2 | Output of third flip-flop - one of eight parallel latch outputs |
| 7 | D2 | Data input for third flip-flop - part of octal data bus interface |
| 8 | D3 | Data input for fourth flip-flop - supports parallel 8-bit signal conditioning |
| 9 | Q3 | Output of fourth flip-flop - matches D3 state after clock edge and propagation delay |
| 10 | GND | Ground reference - 0 V return path for all internal circuitry and I/O |
| 11 | CP | Positive-edge clock input - rising edge triggers simultaneous sampling of all eight D inputs |
| 12 | Q4 | Output of fifth flip-flop - maintains deterministic phase relationship with CP |
| 13 | D4 | Data input for fifth flip-flop - aligned with other Dn pins for PCB routing efficiency |
| 14 | D5 | Data input for sixth flip-flop - supports full octal parallel load capability |
| 15 | Q5 | Output of sixth flip-flop - provides stable output during CP low phase |
| 16 | Q6 | Output of seventh flip-flop - complements Q5–Q0 for complete 8-bit latch bank |
| 17 | D6 | Data input for seventh flip-flop - routed adjacent to D5/D7 for matched trace lengths |
| 18 | D7 | Data input for eighth flip-flop - final bit of octal input group |
| 19 | Q7 | Output of eighth flip-flop - completes 8-bit synchronized output bus |
| 20 | VCC | Supply voltage input - powers internal logic and drives output buffers; decoupling required near pin |
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 |
| Overvoltage-tolerant inputs | Accepts up to 5.5 V on any input pin regardless of VCC - enables safe interfacing with higher-voltage subsystems |
| Schmitt-trigger inputs | Provides hysteresis on all inputs to suppress noise-induced glitches in noisy automotive harness environments |
| Common clock and reset architecture | Single CP and MR control all eight flip-flops - simplifies timing control and reduces PCB routing complexity |
| Low dynamic power dissipation | CPD = 14 pF - minimizes switching current in high-frequency applications such as PWM signal conditioning |
| DHVQFN20 with side-wettable flanks | Enables automated optical inspection (AOI) of solder joints - improves manufacturing yield in automotive SMT lines |
Applications
| Automotive Body Control Unit (BCU) | Instrument Cluster Signal Conditioning |
|---|---|
|
Use Scenario: Latching door lock status, window position, and mirror adjustment signals before CAN transmission. IC Role / Device Role / Timing Role: Octal synchronizer capturing 8-bit sensor bus output on rising CP edge; MR resets all outputs during power-on initialization. Use Value: Eliminates metastability risk when bridging asynchronous mechanical switch inputs to synchronous MCU sampling, with guaranteed tsu/th margins at 125 °C. |
Use Scenario: Buffering and synchronizing analog-to-digital converter (ADC) output bits feeding a display controller. IC Role / Device Role / Timing Role: Parallel D-flip-flop array holding 8-bit ADC result until display refresh cycle begins. Use Value: Provides glitch-free, edge-aligned data staging with <4.2 ns tpd - critical for maintaining pixel timing integrity in TFT driver interfaces. |
| Engine Control Module (ECM) Diagnostic Interface | Automotive Lighting Controller |
|
Use Scenario: Capturing fault codes from multiple sensor monitoring circuits for diagnostic reporting via OBD-II. IC Role / Device Role / Timing Role: Isolating and synchronizing discrete fault flags (e.g., open-circuit, short-to-battery) to ECM clock domain. Use Value: MR pin allows centralized hardware reset of all fault latches during ECU reboot, ensuring clean diagnostic state without software intervention. |
Use Scenario: Staging PWM dimming commands for LED headlamp arrays controlled by a central lighting ECU. IC Role / Device Role / Timing Role: Holding 8-bit brightness values from SPI interface until next PWM frame start. Use Value: Overvoltage-tolerant inputs accept 5 V SPI signals directly from legacy controllers while operating at 3.3 V VCC - reducing BOM count and board space. |
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 |
|---|---|---|---|
| 74AHCT273BQ-Q100 | TTL-compatible inputs (VIH = 2.0 V min); identical pinout, timing, and package | Better suited for interfacing with legacy 5 V TTL logic; slightly higher ICC at VCC = 5 V | Select when driving from standard 5 V TTL outputs; retains same AEC-Q100 qualification and automotive temperature range |
| SN74LVC273QPWRQ1 | Lower VCC range (1.65–3.6 V); LVCMOS inputs; different pinout (TSSOP20 only); no overvoltage tolerance | Optimized for 3.3 V-only systems; not suitable for mixed 3.3/5 V interfaces without level shifters | Choose only for cost-sensitive 3.3 V designs where overvoltage tolerance is unnecessary and footprint compatibility is verified |
Compared with 74AHCT273BQ-Q100, the TTL-input variant offers identical automotive qualification but narrower noise margin in 3.3 V systems; compared with SN74LVC273QPWRQ1, the 74AHC273BQ-Q100 provides broader voltage interoperability and proven robustness in mixed-rail automotive harnesses.
Availability
74AHC273BQ-Q100 is available at Aetrix Electronics and suitable for automotive body control units, instrument cluster signal conditioning, engine control module diagnostics, and lighting controller staging requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74AHC273BQ-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 focused on high-volume, high-reliability logic, analog, and MOSFET solutions, with deep specialization in automotive-qualified components.
The 74AHC273BQ-Q100 belongs to Nexperia's AEC-Q100-qualified logic portfolio, designed specifically for automotive signal synchronization, noise-immune latching, and mixed-voltage interface bridging in safety-critical electronic control units.
FAQ
Is the 74AHC273BQ-Q100 pin-compatible with non-automotive versions like 74AHC273BQ?
Yes - the 74AHC273BQ-Q100 shares identical pinout, electrical characteristics, and package (SOT764-1 DHVQFN20) with industrial-grade 74AHC273BQ. The "-Q100" suffix denotes AEC-Q100 qualification, including enhanced test coverage and extended temperature validation, but does not alter physical or functional compatibility.
Can MR be used as a synchronous clear by tying it to CP through logic?
No - MR is asynchronous and active-low. Driving MR from CP-derived logic risks violating minimum pulse width (5.0 ns at VCC = 5 V) or setup time to CP, potentially causing metastable or partial reset behavior. For synchronous reset, use external gating of D inputs or select a part with dedicated synchronous reset functionality.
What is the maximum recommended clock frequency for reliable operation at 125 °C?
At VCC = 5.0 V and CL = 15 pF, fmax is 100 MHz (min) over -40 °C to +125 °C. Derating applies above 111 °C per datasheet: Ptot decreases linearly at 12.9 mW/K. For sustained 125 °C operation, limit average toggle rate and ensure adequate PCB copper pour under the exposed pad.
Does the exposed thermal pad (terminal 1 index area) require solder connection?
No - the exposed pad has no electrical function. Per Nexperia's guidance, it may remain unsoldered, float electrically, or connect to GND. If soldered, the land must be isolated from other nets unless explicitly tied to GND; thermal performance improvement is marginal, but mechanical stability increases.
74AHC273BQ-Q100X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHC
- 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:
- 110 MHz
- Max Propagation Delay @ V, Max CL:
- 10.5ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 2V ~ 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)
74AHC273BQ-Q100X FAQ
1.How can I place an order for 74AHC273BQ-Q100X through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHC273BQ-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 74AHC273BQ-Q100X reliable?
The price and inventory of 74AHC273BQ-Q100X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC273BQ-Q100X is usually 5 days.
3.What payment methods are accepted for 74AHC273BQ-Q100X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC273BQ-Q100X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHC273BQ-Q100X?
74AHC273BQ-Q100X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHC273BQ-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 74AHC273BQ-Q100X?
For technical support, including 74AHC273BQ-Q100X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC273BQ-Q100X requirements.
6.How does Aetrix verify that 74AHC273BQ-Q100X is sourced from the original manufacturer or authorized distributors?
All 74AHC273BQ-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 74AHC273BQ-Q100X meets industry standards.
7.What is the process for return or replacement of 74AHC273BQ-Q100X?
All 74AHC273BQ-Q100X units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC273BQ-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 74AHC273BQ-Q100X part is unused and in its original packaging.
Return procedure for 74AHC273BQ-Q100X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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