Overview
The 74HC4017D, produced by Nexperia USA Inc., is a 5-stage Johnson decade counter integrated circuit. This component features 10 decoded outputs (Q0 to Q9) and is part of the 74HC/74HCT family of logic ICs. It is designed to operate within a wide range of applications, including automotive, industrial, and consumer electronics. The counter includes two clock inputs (CP0 and CP1) and an overriding asynchronous master reset input (MR), allowing for flexible control and reset capabilities.
Key Specifications
| Type number | VCC (V) | Output drive capability (mA) | Logic switching levels | tpd (ns) | fmax (MHz) | Power dissipation considerations | Tamb (°C) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 74HC4017D | 2.0 - 6.0 | ± 5.2 | CMOS | 18 | 77 | low | -40 ~ 125 | 90 | 8.3 | 49 | SO16 (SOT109-1) |
Key Features
- 5-stage Johnson decade counter with 10 decoded outputs (Q0 to Q9)
- Two clock inputs (CP0 and CP1) for flexible counting control
- Overriding asynchronous master reset input (MR) for resetting the counter to zero
- Automatic code correction: returns to proper counting mode within 11 clock pulses after any illegal code
- Inputs include clamp diodes for protection
- CMOS logic switching levels for compatibility with a wide range of systems
- Operating temperature range: -40°C to 125°C
Applications
The 74HC4017D is versatile and can be used in various applications across different industries, including:
- Automotive systems for control and sequencing
- Industrial control systems for timing and counting functions
- Consumer electronics for display and sequencing needs
- Power and computing systems requiring precise counting and control
- Mobile and wearable devices where space and power efficiency are crucial
Q & A
- What is the 74HC4017D?
The 74HC4017D is a 5-stage Johnson decade counter integrated circuit with 10 decoded outputs.
- What are the clock input conditions for the 74HC4017D?
The counter is advanced by either a LOW-to-HIGH transition at CP0 while CP1 is LOW or a HIGH-to-LOW transition at CP1 while CP0 is HIGH.
- How does the master reset input (MR) function?
A HIGH on MR resets the counter to zero (Q0 = Q5-9 = HIGH; Q1 to Q9 = LOW) independent of the clock inputs.
- What is the operating voltage range of the 74HC4017D?
The operating voltage range is 2.0 V to 6.0 V.
- What is the maximum operating frequency of the 74HC4017D?
The maximum operating frequency is 77 MHz.
- What is the package type of the 74HC4017D?
The package type is SO16 (SOT109-1).
- What are the temperature limits for the 74HC4017D?
The operating temperature range is -40°C to 125°C.
- Does the 74HC4017D have automatic code correction?
Yes, it returns to a proper counting mode within 11 clock pulses after any illegal code.
- Can the 74HC4017D be cascaded with other counters?
Yes, the Q5-9 output can be used to drive the CP0 input of the next counter.
- What type of logic switching levels does the 74HC4017D use?
The 74HC4017D uses CMOS logic switching levels.
