CD4017BF - 3-18V CMOS Decade Counter | TI | Sequencer
MPN: CD4017BF ✓ نشطCD4017BF نظرة عامة
A CMOS decade counter is a synchronous logic device that advances through a fixed number of states when triggered by an external clock. The CD4017 family combines an internal flip-flop and counter stages with ten decoded output lines. This places it in the logic IC, counter, divider, and sequencing-device hierarchy, where it bridges basic timing control and discrete state activation without requiring a microcontroller for simple ten-step sequences.
The CD4017BF provides three principal characteristics: a 3 V to 18 V supply range, ten decoded outputs, and a 16-pin PDIP package. Its broad supply range supports integration into legacy CMOS logic systems operating across multiple logic voltages. The decoded outputs can drive indicator stages, relays, transistors, or other circuit blocks when correctly interfaced, while the reset and clock-inhibit inputs provide basic sequence control.
Internally, the device uses the CD4000 CMOS logic family and counts upward. A rising clock edge advances the counter state, while the decoded outputs indicate the current count. The separate clock and clock-inhibit inputs allow an external signal to pause or inhibit progression, and the reset input returns the sequence to its initial state. Designers should account for propagation delay and supply-level timing when cascading counters or synchronizing outputs with other logic.
Typical uses include ten-step relay sequencing, bidirectional LED animation, programmable pulse-counting modules, divide-by-ten clock generation, and basic industrial control panels. In motor-control applications, decoded outputs can select winding drive stages or external switching elements. In indicator circuits, only the output corresponding to the active count is asserted, reducing the control logic required for a repeating visual pattern.
Design the clock source to provide clean, repeatable edges and respect the device’s absolute-maximum ratings. Use pull-up or pull-down resistors where an input may float, and ensure that reset and clock-inhibit signals cannot contend with external drivers. Decoupling capacitors should be placed close to the supply pins, while high-current loads should be driven through suitable transistors rather than loading the counter outputs directly.
This product page combines the TI product description, package information, decoded-counter functionality, practical design guidance, sourcing-oriented commercial answers, and clearly qualified replacement analysis. It is intended to help engineers confirm the CD4017BF fit, inspect its 16-pin connectivity, and decide whether a verified same-footprint alternative is appropriate for an existing PCB.
بدائل مباشرة لـ CD4017BF — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع CD4017BF (نفس عامل الشكل والبصمة) — يختلف في Logic Family, Number of Decoded Outputs.
CD4017BE
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←HEF4017BP
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
MC14017BCP
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
CD4017BF الحدود القصوى والخصائص الكهربائية
| Logic Type | CMOS decade counter and divider |
| Logic Family | CD4000 |
| Counter Type | Decade |
| Number of Decoded Outputs | 10 outputs |
| Number of Counter Bits | 10-bit decoded counter |
| Counting Sequence | Up |
| Counting Method | Synchronous |
| جهد التغذية التشغيلي | 3 V to 18 V |
| Package Type | PDIP-16 |
| عدد الدبابيس | 16 pins |
| نمط التركيب | Through-hole |
| تكوين الخرج | 10 decoded outputs |
| Clock Input | 1 clock input |
| Clock Inhibit Input | 1 clock inhibit input |
| Reset Input | 1 reset input |
تكوين أطراف CD4017BF
| دبوس 1 | CLK — Clock input |
| دبوس 2 | CL INH — Clock inhibit input |
| دبوس 3 | RESET — Asynchronous reset input |
| دبوس 4 | Q4 — Decoded output 4 |
| دبوس 5 | Q5 — Decoded output 5 |
| دبوس 6 | Q6 — Decoded output 6 |
| دبوس 7 | Q7 — Decoded output 7 |
| دبوس 8 | VSS — Ground supply |
| دبوس 9 | Q8 — Decoded output 8 |
| دبوس 10 | Q9 — Decoded output 9 |
| دبوس 11 | Q0 — Decoded output 0 |
| دبوس 12 | Q1 — Decoded output 1 |
| دبوس 13 | Q2 — Decoded output 2 |
| دبوس 14 | Q3 — Decoded output 3 |
| دبوس 15 | CLK — Clock input |
| دبوس 16 | VDD — Positive supply |
التطبيقات النموذجية
CD4017BF مناسب لـ 6 التطبيقs: Ten-Step LED Chaser, Stepper-Motor Step Sequencing, Relay Sequence Controller, Divide-by-Ten Clock Module, Industrial State Selector, Test and Measurement Pulse Counter.
Ten-Step LED Chaser
The CD4017BF fits a ten-step LED chaser because its ten decoded outputs correspond directly to count states 0 through 9. Each output can enable one indicator channel through a suitable driver and current-limiting resistor, producing a repeating visual sequence without a microcontroller. Its 3 V to 18 V supply range supports integration with CD4000 CMOS logic, while the clock input establishes the animation rate. Keep each LED branch electrically isolated from the counter output where required, and use transistor drivers when the total indicator current exceeds the published output capability.
موصى به
Stepper-Motor Step Sequencing
The CD4017BF can generate ten decoded sequencing states for a stepper-motor or discrete multi-stage control circuit. The ten outputs select external drive channels in a defined order, while the clock input advances the sequence and the reset input returns it to the starting state. Its 3 V to 18 V operating range makes it appropriate for CMOS control systems, but the motor windings and power devices must be isolated through transistors or other driver stages. Confirm output loading, pulse timing, and reset behavior in the manufacturer datasheet before connecting load hardware.
موصى به
Relay Sequence Controller
The CD4017BF is useful in a relay sequence controller because its ten decoded outputs activate one selected stage per count. A clock source can step through the sequence, the clock-inhibit input can pause progression, and reset can restore the initial condition. The 3 V to 18 V supply range allows operation from established CMOS control rails, while the 16-pin PDIP package supports through-hole assembly or socketed prototyping. Use driver transistors or suitable relay interfaces so the decoded outputs are not asked to exceed their specified current capability.
موصى به
Divide-by-Ten Clock Module
The CD4017BF can divide an incoming clock into ten decoded states for use as a decade-based timing reference. The first ten clock transitions advance the decoded outputs through their sequence, after which the internal counter rolls over according to the CD4000 design. Its 3 V to 18 V operating range supports integration into legacy CMOS timing circuits. For an accurate time base, provide a stable clock source, observe published propagation-delay limits, and account for output jitter when the decoded signal drives a downstream counter or display stage.
موصى به
Industrial State Selector
The CD4017BF works well in an industrial state selector where one of ten machine states must activate at a time. Its decoded outputs reduce the control burden by presenting a direct indication for each count, while reset and clock-inhibit inputs provide basic operating commands. The broad 3 V to 18 V supply range permits use with compatible CMOS control voltages, and the through-hole PDIP-16 package supports maintainable industrial assembly. Use isolation or transistor interfaces for relays, solenoids, and high-energy loads, and validate timing at the lowest intended supply voltage.
موصى به
Test and Measurement Pulse Counter
The CD4017BF can count incoming pulses and expose their progress through ten decoded outputs, making it useful for simple bench counters and repetitive-event indicators. The 3 V to 18 V supply range supports laboratory control systems based on CD4000 CMOS logic, and the reset input provides a convenient way to restart each measurement. Clock edges must remain clean and within the manufacturer’s timing limits for reliable counting. Use the decoded outputs to indicate count intervals, and drive external instruments or displays through suitable interface circuits rather than directly loading the counter outputs.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ CD4017BF — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | CD4017BE | HEF4017BP | MC14017BCP |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | NXP | onsemi |
| Package | PDIP-16 | PDIP-16 | DIP-16 | DIP-16 |
| Function | CMOS decade counter with 10 decoded outputs | CMOS decade counter | CD4000-family decade counter | CD4000-family decade counter |
| Logic Family | CD4000 | CD4000 | HEF4000 | 14000 |
| Number of Decoded Outputs | 10 outputs | 10 outputs | 10 outputs | 10 outputs |
| Number of Pins | 16 pins | 16 pins | 16 pins | 16 pins |
| Mounting Style | Through-hole | Through-hole | Through-hole | Through-hole |
أبرز الفروقات
- Exact manufacturer family match for an existing CD4017BF footprint (مقابلCD4017BE)
- Broader legacy supply compatibility within the qualified CD4000 design (مقابلHEF4017BP)
- Established CD4017 decade-counter sequencing behavior (مقابلMC14017BCP)
ملاحظات التصميم
Place the supply-bypass capacitor close to the VDD and VSS pins and provide a low-impedance return path to the ground plane or equivalent ground wiring. Because the CD4017BF operates across 3 V to 18 V, the bypass network and board insulation should be suitable for the maximum installed supply. Do not estimate current consumption from the decoded-output state; the operating current depends on supply voltage, switching activity, and the loads attached to the outputs.
Route the clock and clock-inhibit traces away from inductive loads and high-current switching paths to reduce false clock transitions. Keep the reset trace short and avoid routing it adjacent to the clock when pulse-like interference could cause unintended state changes. For a relay or motor design, place transistor or driver circuitry at the board edge and keep high-current loops physically separated from the counter and its timing inputs.
Do not connect LEDs, relays, or motor windings directly unless the decoded output’s published current and duty-cycle limits are satisfied. Use current-limiting resistors for LEDs and suitable transistor or relay-driver stages for inductive loads. Also avoid leaving clock, clock-inhibit, or reset inputs floating; pull them to a defined inactive logic level when the source may be disconnected during power-up, reset, or servicing.
Use a clean clock edge and check propagation delay when the decoded output is used for a time-critical action. Cascaded counters should include reset coordination so that downstream states begin at known values. At the lowest intended supply voltage, verify that the clock amplitude and transition rate satisfy the manufacturer’s input requirements, and allow for the response delay between a clock transition and the corresponding decoded output change.
معلومات الامتثال
The CD4017BF is a general-purpose CD4000 CMOS logic IC rather than an automotive-qualified device. RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations require confirmation for the exact manufacturer ordering option.
