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Nexperia USA Inc. 74HCT4017BQ-Q100X
- Part No.:
- 74HCT4017BQ-Q100X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Counters, Dividers
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
74HCT4017BQ-Q100X.pdf
- Description:
- IC DECADE COUNTER 10BIT 16DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,738
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Product details
Overview
74HCT4017BQ-Q100 from Nexperia is an automotive-grade 5-stage Johnson decade counter with 10 decoded outputs (Q0–Q9), dual-edge-triggered clock inputs (CP0: LOW-to-HIGH, CP1: HIGH-to-LOW), asynchronous master reset (MR), and carry output Q5-9 - operating from 4.5 V to 5.5 V across –40 °C to +125 °C for use in engine control timing, LED sequential lighting, and automotive dashboard counters.
For engineers reviewing the 74HCT4017BQ-Q100 datasheet, 74HCT4017BQ-Q100 pinout, 74HCT4017BQ-Q100 application, or 74HCT4017BQ-Q100 equivalent, this device supports precise 1-of-10 decoding, cascaded divide-by-N timing (e.g., divide-by-10 via Q5-9), asynchronous reset-driven pulse generation, and TTL-level input compatibility in space-constrained DHVQFN16 automotive modules.
Technical Context
The 74HCT4017BQ-Q100 implements a synchronous Johnson counter architecture with internal code correction that recovers from illegal states within ≤11 clock cycles. Its dual-clock interface enables flexible edge selection: CP0 advances on rising edge when CP1 = LOW; CP1 advances on falling edge when CP0 = HIGH - supporting bidirectional clock domain interfacing without external logic.
Carry output Q5-9 is active LOW during states 5–9 and serves as a cascading enable signal for multi-stage counting; MR overrides all clock activity to force Q0 = HIGH and Q1–Q9 = LOW. Inputs include clamp diodes enabling safe interfacing to voltages exceeding VCC using current-limiting resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures robust operation under automotive battery transients (e.g., load dump, cold crank). |
| Operating Temperature | –40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood and powertrain applications. |
| Max Clock Frequency | 61 MHz at VCC = 4.5 V - supports high-speed timing in engine RPM sensing and PWM-based display sequencing. |
| Propagation Delay | 25 ns (CP0 → Qn) at VCC = 4.5 V - enables sub-40 ns state transitions critical for deterministic real-time control loops. |
| Input Compatibility | TTL-level - interfaces directly with legacy microcontroller GPIOs and 5 V logic without level shifters. |
| Output Drive | ±4 mA at VCC = 4.5 V - sufficient to drive LEDs or small-signal MOSFET gates without external buffers. |
| Power Dissipation | 160 μA ICC (max) at +125 °C - minimizes self-heating in thermally constrained ECUs and instrument clusters. |
Pinout & Package
DHVQFN16 package (SOT763-1): 2.5 × 3.5 × 0.85 mm body, side-wettable flanks for AOI-compatible solder joint inspection, no leads, 16-terminal surface-mount construction optimized for automotive PCB miniaturization and thermal reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Q5 | Decoded output for count state 5 - used in divide-by-6 or cascade enable logic. |
| 2 | CP1 | HIGH-to-LOW edge-triggered clock input - enables asynchronous clock domain crossing when CP0 = HIGH. |
| 3 | Q3 | Decoded output for count state 3 - drives third stage of sequential LED activation or timer event. |
| 4 | Q4 | Decoded output for count state 4 - used in 4-bit binary-coded decimal (BCD) conversion or segment enable. |
| 5 | Q7 | Decoded output for count state 7 - triggers seventh function in diagnostic mode or multiplexed display scanning. |
| 6 | Q9 | Decoded output for count state 9 - final digit in decade cycle; resets counter when fed back to MR via RC network. |
| 7 | Q6 | Decoded output for count state 6 - enables sixth channel in sensor multiplexing or relay bank sequencing. |
| 8 | Q5-9 | Carry output (active LOW) - asserted during states 5–9; used to clock next counter stage in multi-decade systems. |
| 9 | Q2 | Decoded output for count state 2 - initiates second-phase action in motor commutation or indicator sequencing. |
| 10 | CP0 | LOW-to-HIGH edge-triggered clock input - primary clock path; advances counter only when CP1 = LOW. |
| 11 | Q0 | Reset-state output (active HIGH) - indicates zero-count condition; used for system initialization or watchdog sync. |
| 12 | Q1 | Decoded output for count state 1 - activates first function in boot-up sequence or status indication chain. |
| 13 | MR | Asynchronous master reset (active HIGH) - forces Q0 = HIGH and Q1–Q9 = LOW regardless of clock edges. |
| 14 | GND | Ground reference (0 V) - return path for all internal logic and output currents; requires low-impedance PCB plane. |
| 15 | Q8 | Decoded output for count state 8 - enables eighth subsystem in modular control architecture or fault logging. |
| 16 | VCC | Positive supply rail - powers all internal flip-flops and decoding logic; must be decoupled with ≥100 nF ceramic capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use from –40 °C to +125 °C with full traceability and process control. |
| Dual-edge clock selectivity | CP0 (rising) and CP1 (falling) allow flexible clock source routing without external inverters or glue logic. |
| Automatic illegal-state recovery | Returns to valid decade sequence within 11 clocks - eliminates need for external watchdog or reset supervision. |
| Side-wettable flanks (DHVQFN) | Enables automated optical inspection (AOI) of solder joints - critical for zero-defect automotive manufacturing. |
| TTL-compatible inputs | Accepts standard 5 V TTL logic levels while powered from 4.5–5.5 V - simplifies integration with legacy MCU peripherals. |
Applications
| Engine RPM Indicator | LED Sequential Dashboard Lighting |
|---|---|
|
Use Scenario: Real-time engine speed display using 10-segment bar graph driven by crankshaft position sensor pulses. IC Role / Device Role / Timing Role: Decodes incoming tachometer pulses into 1-of-10 active outputs, each mapped to one LED segment. Use Value: Provides deterministic, glitch-free LED activation with <25 ns propagation delay - eliminating flicker during rapid RPM changes. |
Use Scenario: Animated turn-signal indicators on digital instrument clusters using sequential LED sweep. IC Role / Device Role / Timing Role: Generates time-ordered Q0–Q9 outputs synchronized to vehicle CAN bus timing signals. Use Value: Enables smooth visual feedback with precise inter-LED timing (≤100 ns skew) and no external timing components. |
| Multi-Stage Diagnostic Timer | Automotive HVAC Mode Selector |
|
Use Scenario: 10-step fault-code blink pattern generator for OBD-II diagnostics using single-wire serial output. IC Role / Device Role / Timing Role: Converts microcontroller UART idle periods into fixed-duration LED blink sequences via MR-triggered reset. Use Value: Delivers standardized blink codes (e.g., 3 flashes = P0101) with ±5% timing accuracy over full temperature range. |
Use Scenario: Mechanical rotary switch debounced and decoded into discrete HVAC mode selections (off, auto, heat, cool, etc.). IC Role / Device Role / Timing Role: Counts switch encoder pulses and asserts corresponding Qn output to activate mode-specific relay drivers. Use Value: Eliminates software debounce overhead and provides hardware-level immunity to contact bounce up to 10 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar decade counter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC4017BQ-Q100 | CMOS-level inputs (VIH = 3.15 V min at VCC = 4.5 V); wider 2.0–6.0 V supply range | Better suited for mixed-voltage systems where 3.3 V controllers interface with 5 V peripherals | Select when interfacing with CMOS microcontrollers or requiring extended voltage margin beyond 5.5 V |
| SN74LV4017APWR | Lower 2.0–5.5 V supply; LV logic family with 32 mA drive; non-automotive grade (–40 °C to +105 °C) | Limited to cabin electronics or infotainment modules not exposed to under-hood temperatures | Choose for cost-sensitive non-powertrain applications where AEC-Q100 is not mandated |
Compared with 74HC4017BQ-Q100 and SN74LV4017APWR, the 74HCT4017BQ-Q100 uniquely balances TTL input compatibility, AEC-Q100 Grade 1 qualification, and DHVQFN thermal performance - making it the only option qualified for direct integration into engine control units and transmission control modules.
Availability
74HCT4017BQ-Q100 is available at Aetrix Electronics and suitable for automotive engine control units, digital instrument clusters, and HVAC control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT4017BQ-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 essential efficiency technologies - delivering high-performance, reliable logic, analog, and discrete devices for automotive, industrial, and consumer markets.
The 74HCT4017BQ-Q100 belongs to Nexperia's automotive-qualified logic portfolio, engineered specifically for deterministic timing, noise-immune operation, and long-term reliability in safety-critical vehicle subsystems.
FAQ
Can 74HCT4017BQ-Q100 operate with a 3.3 V supply?
No. The 74HCT4017BQ-Q100 is specified only for 4.5 V to 5.5 V operation per its AEC-Q100 qualification and TTL input threshold design. At 3.3 V, VIH minimum (2.0 V) is met but VOH degrades below 2.4 V and fmax drops below 10 MHz - violating automotive functional safety timing requirements. Use 74LVC4017 for 3.3 V systems.
How is the Q5-9 output used in cascaded counting?
Q5-9 is active LOW during count states 5–9 and connects directly to CP0 of the next 74HCT4017BQ-Q100. When the first counter reaches state 5, Q5-9 goes LOW, enabling the second counter's CP0 - advancing it on the next rising edge. This creates a synchronous 100-state counter without external logic or timing hazards.
Does the device require external pull-up or pull-down resistors on CP0/CP1?
No. Inputs include integrated clamp diodes and have defined VIH/VIL thresholds (2.0 V/0.8 V at VCC = 4.5 V). With clean CMOS or TTL clock sources, external biasing is unnecessary. Only add series current-limiting resistors if interfacing to voltages > VCC + 0.5 V, per datasheet Section 2.
What is the maximum allowable clock duty cycle asymmetry?
The device does not specify minimum high/low time separately but defines minimum pulse width: 16 ns for CP0/CP1 at VCC = 4.5 V. Therefore, duty cycle must maintain ≥16 ns HIGH and ≥16 ns LOW periods - supporting 40%–60% duty cycle at 30 MHz max frequency. Asymmetry beyond this risks metastability or missed counts.
74HCT4017BQ-Q100X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Counter, Decade
- Direction:
- Up
- Number of Elements:
- 1
- Number of Bits per Element:
- 10
- Reset:
- Asynchronous
- Timing:
- Synchronous
- Count Rate:
- 67 MHz
- Trigger Type:
- Positive, Negative
- Voltage - Supply:
- 4.5 V ~ 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DHVQFN (2.5x3.5)
74HCT4017BQ-Q100X FAQ
1.How can I place an order for 74HCT4017BQ-Q100X through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT4017BQ-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 74HCT4017BQ-Q100X reliable?
The price and inventory of 74HCT4017BQ-Q100X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT4017BQ-Q100X is usually 5 days.
3.What payment methods are accepted for 74HCT4017BQ-Q100X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT4017BQ-Q100X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT4017BQ-Q100X?
74HCT4017BQ-Q100X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT4017BQ-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 74HCT4017BQ-Q100X?
For technical support, including 74HCT4017BQ-Q100X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT4017BQ-Q100X requirements.
6.How does Aetrix verify that 74HCT4017BQ-Q100X is sourced from the original manufacturer or authorized distributors?
All 74HCT4017BQ-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 74HCT4017BQ-Q100X meets industry standards.
7.What is the process for return or replacement of 74HCT4017BQ-Q100X?
All 74HCT4017BQ-Q100X units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT4017BQ-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 74HCT4017BQ-Q100X part is unused and in its original packaging.
Return procedure for 74HCT4017BQ-Q100X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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