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Nexperia USA Inc. 74AHC74BQ-Q100X
- Part No.:
- 74AHC74BQ-Q100X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 14-VFQFN Exposed Pad
- Datasheet:
-
74AHC74BQ-Q100X.pdf
- Description:
- IC FF D-TYPE DUAL 1BIT 14DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,051
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Product details
Overview
74AHC74BQ-Q100 from Nexperia is an automotive-qualified dual positive-edge-triggered D-type flip-flop with asynchronous set (active LOW) and reset (active LOW), complementary Q/Q outputs, Schmitt-trigger clock inputs, and CMOS-level input compatibility. It operates from 2.0 V to 5.5 V, delivers ≤9.5 ns propagation delay at 5 V/50 pF, and supports 110 MHz maximum toggle frequency. It is used in automotive body control modules for synchronized signal latching and state retention.
For engineers reviewing the 74AHC74BQ-Q100 datasheet, 74AHC74BQ-Q100 pinout, 74AHC74BQ-Q100 application, or 74AHC74BQ-Q100 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification (-40 °C to +125 °C), DHVQFN14 package with side-wettable flanks for AOI, asynchronous control timing, and dual independent flip-flop architecture with guaranteed setup/hold times.
Technical Context
This device implements two independent edge-triggered D-type storage elements sharing no internal coupling-each has dedicated D, CP, SD, RD, Q, and Q̅ terminals. The Schmitt-trigger clock input enables robust operation with slow-rising or noisy clock signals, while asynchronous SD/RD inputs override clock action and force outputs independently.
It complies with JEDEC Standard No. 7-A and matches LSTTL pinouts. Input voltage tolerance exceeds VCC (up to 7.0 V), and static current consumption remains below 40 μA at 5.5 V across full temperature range, supporting low-power automotive subsystems requiring stable logic state retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | AHC - Advanced High-speed CMOS, compatible with LSTTL pinout and drive strength |
| Supply Voltage Range | 2.0 V to 5.5 V - Enables direct interface with 3.3 V and 5 V automotive microcontrollers |
| Propagation Delay (tpd) | ≤9.5 ns @ VCC = 5.5 V, CL = 50 pF - Ensures sub-10 ns timing margin for high-speed control loops |
| Maximum Toggle Frequency | 110 MHz @ VCC = 5.5 V, CL = 15 pF - Supports real-time sampling and synchronization in ADAS sensor interfaces |
| Input Threshold Type | Schmitt-trigger on CP - Rejects noise on clock lines without external filtering in harsh EMI environments |
| Operating Temperature | -40 °C to +125 °C - Qualified per AEC-Q100 Grade 1 for under-hood and powertrain applications |
| ESD Protection | HBM >2000 V, CDM >1000 V - Meets automotive system-level ESD immunity requirements |
Pinout & Package
DHVQFN14 (SOT762-1) package: 2.5 × 3.0 × 0.85 mm body, 14-terminal quad flat no-lead with side-wettable flanks for automated optical inspection of solder joints; thermal pad (terminal 7) is electrically isolated and may be left floating or connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1RD | Asynchronous reset (1st FF) | Active-LOW direct override of Q₁ output; functions independently of clock |
| 1D | Data input (1st FF) | Sampled on rising edge of 1CP; must be stable ≥5 ns before clock transition |
| 1CP | Clock input (1st FF) | Schmitt-triggered; LOW-to-HIGH edge triggers data capture and output update |
| 1SD | Asynchronous set (1st FF) | Active-LOW direct override forcing Q₁ = HIGH; overrides clock and data |
| 1Q / 1Q̅ | True/complement outputs (1st FF) | Non-inverted and inverted latched states; drive ±8 mA at 5 V |
| GND | Ground reference | Terminal 7 is thermal pad only - no electrical function unless explicitly connected |
| 2Q / 2Q̅ | True/complement outputs (2nd FF) | Independent of first flip-flop; identical timing and drive capability |
| 2SD / 2RD | Asynchronous set/reset (2nd FF) | Functionally identical to 1SD/1RD but isolated to second flip-flop |
| VCC | Supply voltage | Single rail powers both flip-flops; decoupling required within 3 mm of terminal 14 |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use from -40 °C to +125 °C ambient, including thermal cycling and humidity testing |
| Side-wettable flanks (SWF) | DHVQFN14 package enables 100% automated optical inspection of solder joint integrity on production PCBs |
| Input overvoltage tolerance | Accepts VI up to 7.0 V regardless of VCC - allows safe interfacing with higher-voltage sensors or legacy systems |
| Asynchronous control isolation | SD and RD inputs operate independently per flip-flop with no cross-talk or shared timing constraints |
| Low dynamic power dissipation | CPD = 12 pF - minimizes switching current in battery-sensitive modules like door ECUs and lighting controllers |
Applications
| Automotive Body Control Unit | Engine Control Interface |
|---|---|
Use Scenario: Latching ignition switch status and headlight on/off commands in a centralized body controller. IC Role / Device Role / Timing Role: Dual D-flip-flop captures and holds two independent digital control signals synchronized to a clean MCU clock edge. Use Value: Asynchronous reset ensures fail-safe deactivation during power-up or fault recovery; Schmitt-trigger clock rejects wiring harness noise. |
Use Scenario: Debouncing throttle position sensor pulses before feeding to engine ECU timing logic. IC Role / Device Role / Timing Role: First flip-flop synchronizes raw sensor edges; second provides metastability-hardened output to downstream counters. Use Value: Guaranteed 5 ns setup/hold time prevents sampling errors; 110 MHz max frequency accommodates high-resolution crankshaft sensing. |
| ADAS Camera Sync Logic | Electric Power Steering Feedback |
Use Scenario: Aligning frame start pulses between stereo camera modules for depth calculation. IC Role / Device Role / Timing Role: Edge-triggered latch captures master sync pulse and distributes aligned copies to two image processors. Use Value: Matched propagation delays (<±0.5 ns skew) ensure sub-pixel timing alignment critical for disparity mapping accuracy. |
Use Scenario: Capturing torque sensor transitions and holding state during CAN bus arbitration delays. IC Role / Device Role / Timing Role: Stores last valid torque reading until next transmission cycle completes, preventing stale-data faults. Use Value: AEC-Q100 qualification ensures reliability in safety-critical EPS systems; low ICC (<40 μA) extends battery backup runtime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74AHCT74BQ-Q100 | TTL-compatible inputs (VIH = 2.0 V min); otherwise identical pinout, timing, and packaging | Required when interfacing with legacy 5 V TTL logic families; not suitable for mixed 3.3 V/5 V CMOS systems | Select when driving from standard 5 V logic gates; verify input thresholds match source driver VOH |
| SN74LVC74AQPWRQ1 | Lower VCC range (1.65–5.5 V); 3.3 V optimized; tpd = 5.4 ns @ 3.3 V/50 pF; different pinout (TSSOP14) | Better performance at 3.3 V; lacks side-wettable flanks; requires PCB redesign for package replacement | Prefer for new 3.3 V designs needing faster timing; not drop-in due to pin mismatch and no SWF |
Compared with 74AHCT74BQ-Q100, the AHC version offers superior noise immunity and wider input voltage tolerance; compared with SN74LVC74AQPWRQ1, it provides AEC-Q100-compliant DHVQFN packaging with AOI support but trades ~2 ns speed at 3.3 V for broader voltage flexibility and automotive process validation.
Availability
74AHC74BQ-Q100 is available at Aetrix Electronics and suitable for automotive body control units, engine management interfaces, ADAS camera synchronization circuits, and electric power steering feedback systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74AHC74BQ-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 logic, analog, and discrete components, with leadership in automotive-qualified standard products and advanced packaging technologies.
The 74AHC series targets high-speed, low-power automotive and industrial logic applications where AEC-Q100 compliance, robust noise immunity, and pin-compatible LSTTL replacement are essential design requirements.
FAQ
What is the minimum recommended VCC for reliable operation of the 74AHC74BQ-Q100?
The 74AHC74BQ-Q100 is specified for reliable operation down to 2.0 V, with guaranteed VIH ≥1.5 V and VOL ≤0.55 V at 2.0 V/8 mA load. Below 2.0 V, propagation delay increases significantly (>20 ns), and setup/hold margins degrade - operation below 2.0 V is outside specification and not recommended for automotive applications.
Can the thermal pad (terminal 7) be connected to ground in the 74AHC74BQ-Q100 DHVQFN package?
Yes - terminal 7 is a non-electrical thermal pad with no internal connection. It may be left floating or connected to GND via a thermal via array; if connected, it must remain at the same potential as the PCB ground plane and not introduce noise coupling. Soldering it improves thermal resistance by ~15 °C/W but does not affect electrical functionality.
How does the Schmitt-trigger clock input improve system-level noise immunity?
The Schmitt-trigger on CP provides hysteresis (~0.3 V typical at 5 V), rejecting voltage fluctuations below the threshold window. This eliminates false triggering from EMI-induced ringing on long traces or unshielded harnesses - a critical advantage in automotive environments where clock lines often run alongside high-current solenoid drivers.
Is the 74AHC74BQ-Q100 pin-compatible with the 74AHC74D-Q100 SO14 version?
Yes - both share identical pin functions and ordering logic per JEDEC MS-012 and SOT762-1 footprints. However, the DHVQFN14 (BQ) has no leads and requires reflow profile adjustments for side-wettable flank soldering, whereas SO14 (D) uses conventional gull-wing reflow. PCB layout and assembly processes differ, but netlist and schematic symbols are interchangeable.
74AHC74BQ-Q100X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHC
- Package/Case:
- 14-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Set(Preset) and Reset
- Type:
- D-Type
- Output Type:
- Complementary
- Number of Elements:
- 2
- Number of Bits per Element:
- 1
- Clock Frequency:
- 115 MHz
- Max Propagation Delay @ V, Max CL:
- 9.3ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 2V ~ 5.5V
- Current - Quiescent (Iq):
- 2 µA
- Input Capacitance:
- 3 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-DHVQFN (2.5x3)
74AHC74BQ-Q100X FAQ
1.How can I place an order for 74AHC74BQ-Q100X through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHC74BQ-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 74AHC74BQ-Q100X reliable?
The price and inventory of 74AHC74BQ-Q100X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC74BQ-Q100X is usually 5 days.
3.What payment methods are accepted for 74AHC74BQ-Q100X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC74BQ-Q100X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHC74BQ-Q100X?
74AHC74BQ-Q100X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHC74BQ-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 74AHC74BQ-Q100X?
For technical support, including 74AHC74BQ-Q100X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC74BQ-Q100X requirements.
6.How does Aetrix verify that 74AHC74BQ-Q100X is sourced from the original manufacturer or authorized distributors?
All 74AHC74BQ-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 74AHC74BQ-Q100X meets industry standards.
7.What is the process for return or replacement of 74AHC74BQ-Q100X?
All 74AHC74BQ-Q100X units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC74BQ-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 74AHC74BQ-Q100X part is unused and in its original packaging.
Return procedure for 74AHC74BQ-Q100X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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