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Nexperia USA Inc. 74HCT74D-Q100,118
- Part No.:
- 74HCT74D-Q100,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74HCT74D-Q100,118.pdf
- Description:
- IC FF D-TYPE DUAL 1BIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,480
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Product details
Overview
74HCT74D-Q100 from Nexperia is an automotive-qualified dual positive-edge-triggered D-type flip-flop with independent asynchronous set (nSD) and reset (nRD) inputs, complementary Q/nQ outputs per section, TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5 V), propagation delay of 18 ns typical at 4.5 V, and operation from −40 °C to +125 °C in SO14 package. It serves as a synchronous storage element in engine control unit (ECU) timing logic and transmission shift register interfaces.
For engineers reviewing the 74HCT74D-Q100 datasheet, 74HCT74D-Q100 pinout, 74HCT74D-Q100 application, or 74HCT74D-Q100 equivalent, this page delivers verified functional identity, AEC-Q100 Grade 1 qualification status, SO14 package mapping, exact pin roles (e.g., Pin 3 = nCP, Pin 1 = nRD), and real-world automotive use context - not generic logic device descriptions.
Technical Context
This dual D-flip-flop implements two independent edge-triggered storage cells sharing no internal coupling; each has dedicated data (nD), clock (nCP), active-low set (nSD), and active-low reset (nRD) terminals. The Schmitt-trigger clock input ensures robust operation with slow-rising signals up to 139 ns/V transition rate at 4.5 V.
All inputs include clamp diodes enabling safe interfacing to voltages exceeding VCC via current-limiting resistors. Output drive capability is symmetrical (±4 mA at VCC = 4.5 V), with balanced tPLH/tPHL delays (18 ns typ) and low static ICC (≤40 μA at 5.5 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HCT - TTL-compatible input levels, CMOS output drive, enables direct interface with legacy 5 V microcontrollers and sensors. |
| Operating Temperature | −40 °C to +125 °C - Qualified for under-hood automotive applications including powertrain and chassis control modules. |
| Propagation Delay (tpd) | 18 ns typical (VCC = 4.5 V, CL = 50 pF) - Enables reliable sampling of 22 MHz clock signals in safety-critical timing paths. |
| Input Thresholds | VIH = 2.0 V min, VIL = 0.8 V max (VCC = 4.5–5.5 V) - Guarantees noise margin >0.4 V against TTL-level signal sources. |
| Supply Voltage Range | 4.5 V to 5.5 V - Matches standard automotive 5 V rail with ±10 % tolerance, eliminating need for external regulation. |
| ESD Protection | HBM >2000 V, CDM >1000 V - Meets AEC-Q100 stress requirements for assembly and field reliability in harsh environments. |
| Package | SO14 (SOT108-1), 3.9 mm body width - Industry-standard footprint compatible with automated optical inspection and reflow soldering. |
Pinout & Package
74HCT74D-Q100 is supplied in plastic small outline package (SO14, SOT108-1) with 14 leads and 3.9 mm body width. Pin 1 is marked by a notch or dot; the package supports lead-free reflow and meets JEDEC MS-012 mechanical standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 13 | nRD (asynchronous reset) | Active-low direct reset for Flip-Flop 1 and 2 respectively - forces nQ = L, nQ = H independently of clock edge. |
| 2, 12 | nD (data input) | Primary synchronous data input for Flip-Flop 1 and 2 - sampled on LOW-to-HIGH nCP transition if setup/hold times met. |
| 3, 11 | nCP (clock input) | Positive-edge-triggered clock for Flip-Flop 1 and 2 - Schmitt-trigger input accepts slow rise/fall edges without metastability. |
| 4, 10 | nSD (asynchronous set) | Active-low direct set for Flip-Flop 1 and 2 respectively - forces nQ = H, nQ = L independently of clock edge. |
| 5, 9 | nQ (true output) | Complementary true output for Flip-Flop 1 and 2 - drives loads up to ±4 mA with rail-to-rail swing. |
| 6, 8 | nQ (complement output) | Inverted output for Flip-Flop 1 and 2 - provides immediate access to both logic states without external inverters. |
| 7 | GND | Ground reference (0 V) - must be connected to system ground plane for stable noise immunity and ESD path. |
| 14 | VCC | Positive supply (4.5–5.5 V) - powers both flip-flops; decoupling capacitor (100 nF) required within 5 mm of this 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 - eliminates qualification burden for Tier 1 automotive designs. |
| Schmitt-trigger clock input | Enables reliable triggering with rise/fall times up to 139 ns/V at 4.5 V - tolerates noisy or slew-limited clock signals from microcontroller GPIO or sensor outputs. |
| Clamp diode-equipped inputs | Allows safe connection to 12 V or 24 V subsystems using series current-limiting resistors - avoids level-shifter ICs in mixed-voltage domains. |
| Symmetrical output impedance | Matched pull-up/pull-down strength (typ. 50 Ω) ensures equal rise/fall times (7 ns typ) - critical for jitter-sensitive clock distribution and bus arbitration. |
| Low static power consumption | ICC ≤ 40 μA at 5.5 V and 25 °C - reduces thermal load in sealed ECUs and extends battery life in always-on vehicle networks. |
Applications
| Engine Control Unit (ECU) Timing Logic | Transmission Control Module (TCM) Shift Register |
|---|---|
|
Use Scenario: Capturing camshaft position pulses synchronized to crankshaft encoder edges for precise ignition timing calculation. IC Role / Device Role / Timing Role: Dual D-flip-flop acts as a synchronizer and metastability filter between asynchronous sensor inputs and the deterministic timing domain of the MCU. Use Value: 18 ns tpd and 3 ns setup/hold margins ensure clean sampling of 5 MHz pulse trains even under voltage droop or EMI exposure. |
Use Scenario: Storing gear selection state across multiple CAN message cycles during adaptive shift learning routines. IC Role / Device Role / Timing Role: Provides non-volatile latching of shift solenoid enable bits using nSD/nRD for fail-safe initialization on power-up. Use Value: Asynchronous set/reset allows immediate state override without waiting for clock edge - essential for safety-critical fault recovery. |
| Body Control Module (BCM) Window Lift Interface | Advanced Driver Assistance System (ADAS) Camera Sync |
|
Use Scenario: Debouncing mechanical switch inputs from window up/down buttons before feeding to MCU GPIO. IC Role / Device Role / Timing Role: Functions as a synchronous debouncer: nD = switch signal, nCP = 10 kHz timer tick, nQ = cleaned output. Use Value: TTL-level inputs directly accept 5 V switch signals; low ICC (<40 μA) minimizes standby current in sleep-mode BCMs. |
Use Scenario: Aligning frame sync pulses from multiple camera sensors to a central vision processor clock domain. IC Role / Device Role / Timing Role: Edge-triggered storage element retimes asynchronous camera VSYNC signals into the processor's synchronous timing tree. Use Value: Balanced tPLH/tPHL (18 ns typ) and 7 ns tt ensure <1 ns skew between parallel camera channels - critical for stereo depth accuracy. |
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 |
|---|---|---|---|
| 74HCT74PW-Q100 | TSSOP14 package (SOT402-1), 4.4 mm body width, thinner profile (1.1 mm max), same electrical specs. | Better suited for space-constrained PCBs with fine-pitch routing; requires different stencil design and AOI settings. | Select when board area is limited and thermal dissipation is managed via copper pour - not drop-in compatible due to different land pattern. |
| SN74HCT74QPWRQ1 | Texas Instruments part; identical function, AEC-Q100 Grade 1, but uses different ESD structure (HBM >4000 V) and has 22 ns tpd (typ). | Higher ESD robustness preferred in high-static-charge manufacturing environments; slightly slower timing may affect 25+ MHz designs. | Choose when TI supply chain alignment or enhanced HBM rating is prioritized over minimal propagation delay. |
Compared with 74HCT74D-Q100, the PW variant trades SO14 compatibility for compactness, while the TI SN74HCT74QPWRQ1 offers higher ESD resilience at the cost of 4 ns added tpd - making the Nexperia SO14 version optimal for cost-sensitive, thermally stable automotive timing where legacy footprint reuse is required.
Availability
74HCT74D-Q100 is available at Aetrix Electronics and suitable for engine control units, transmission control modules, and body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT74D-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 discrete components, with leadership in automotive-grade standard products.
The 74HCT74-Q100 series belongs to Nexperia's Automotive Logic portfolio, engineered specifically for AEC-Q100-compliant digital control functions in powertrain, chassis, and ADAS systems where deterministic timing and long-term stability are mandatory.
FAQ
Is 74HCT74D-Q100 pin-compatible with standard 74HCT74 devices?
Yes - it uses the industry-standard SO14 (SOT108-1) pinout defined in JEDEC MS-012, matching all 74HCT74 variants regardless of manufacturer. Pin 1 (1RD), Pin 3 (1CP), Pin 7 (GND), and Pin 14 (VCC) align exactly with legacy 74HCT74 footprints, enabling direct replacement in existing designs without layout changes.
What is the maximum clock frequency supported at 125 °C ambient?
At −40 °C to +125 °C and VCC = 4.5 V, the guaranteed maximum clock frequency is 18 MHz (fmax min), based on worst-case propagation delay (53 ns max) and setup/hold timing margins. This is validated per AEC-Q100 stress testing and applies to continuous operation in automotive under-hood environments.
Can 74HCT74D-Q100 interface directly with 3.3 V microcontrollers?
No - its TTL-compatible inputs require VIH ≥ 2.0 V, but VIL ≤ 0.8 V at VCC = 5 V; a 3.3 V MCU output (VOH ≈ 3.0 V) meets VIH but risks violating VIL during low-state noise. A level shifter or resistor-based voltage divider is required for reliable bidirectional interfacing with 3.3 V logic domains.
Does the SO14 package include wettable flanks for automated optical inspection?
No - only the DHVQFN14 (SOT762-1) variant features side-wettable flanks. The 74HCT74D-Q100 in SO14 (SOT108-1) relies on traditional top-surface solder joint inspection; AOI requires calibrated contrast settings for gull-wing leads but does not utilize flank imaging.
74HCT74D-Q100,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- 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:
- 59 MHz
- Max Propagation Delay @ V, Max CL:
- 44ns @ 4.5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 4mA, 4mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 40 µA
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
74HCT74D-Q100,118 FAQ
1.How can I place an order for 74HCT74D-Q100,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT74D-Q100,118 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 74HCT74D-Q100,118 reliable?
The price and inventory of 74HCT74D-Q100,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT74D-Q100,118 is usually 5 days.
3.What payment methods are accepted for 74HCT74D-Q100,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT74D-Q100,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT74D-Q100,118?
74HCT74D-Q100,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT74D-Q100,118 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 74HCT74D-Q100,118?
For technical support, including 74HCT74D-Q100,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT74D-Q100,118 requirements.
6.How does Aetrix verify that 74HCT74D-Q100,118 is sourced from the original manufacturer or authorized distributors?
All 74HCT74D-Q100,118 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 74HCT74D-Q100,118 meets industry standards.
7.What is the process for return or replacement of 74HCT74D-Q100,118?
All 74HCT74D-Q100,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT74D-Q100,118, 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 74HCT74D-Q100,118 part is unused and in its original packaging.
Return procedure for 74HCT74D-Q100,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HCT74D-Q100,118 Tags
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Texas Instruments
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