CD4022BF 4-Bit CMOS Octal Counter | Texas Instruments
MPN: CD4022BF ✓ نشطCD4022BF نظرة عامة
A Johnson counter is a type of sequential digital counter that advances through a fixed sequence of states and is commonly used when one decoded output must be active for each count. The CD4022B family provides four counter stages and eight decoded outputs, making it suitable for dividing an input frequency into eight repeating sections or creating an eight-step sequence. Its CMOS architecture places it within the broader hierarchy of counter/divider logic, digital logic IC, and semiconductor categories.
The principal electrical features include support for typical 3.3 V, 5 V, 9 V, 12 V, and 15 V operating supplies, with a minimum operating supply voltage of 3 V. The decoded outputs simplify sequencing by eliminating a binary-to-decimal decoder. Clock-inhibit provides a way to hold or disable further counting, while reset establishes a defined starting condition. The Schmitt-trigger clock input helps accommodate slower or noisy input transitions without relying on a conventional TTL-style threshold.
The CD4022BF is offered in a 16-lead CDIP package and is supplied in a tube. Its broad temperature range makes it suitable for industrial control, instrumentation, legacy automation, and other systems requiring operation across extended environmental conditions. Because it is a CMOS counter, correct handling of unused inputs and power sequencing remains important in designs that combine it with newer digital devices.
For circuit implementation, connect the clock source to the clock input, drive reset and clock inhibit to defined logic levels during normal operation, and route the decoded outputs to the loads or control logic that require sequencing. Verify that the input voltage levels are compatible with the selected supply voltage. Do not leave CMOS control inputs floating, because an undefined input state can cause unwanted counting or increased supply current.
A primary engineering trade-off is that the CD4022BF is a conventional through-hole logic device rather than a modern low-voltage surface-mount counter. Its broad supply-voltage range and temperature rating are useful for established control systems, but newer designs may prefer smaller packages, lower supply current, or higher switching performance. The CDIP package also requires more board area than SOIC or TSSOP alternatives.
This page combines the device description, package and environmental information, drop-in alternatives, comparison parameters, application guidance, and practical design notes. These details support schematic review, footprint confirmation, lifecycle planning, and replacement assessment without replacing the manufacturer datasheet or application-specific qualification.
بدائل مباشرة لـ CD4022BF — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
CD4022BF3
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
CD4022BF3A03
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
CD4022BF الحدود القصوى والخصائص الكهربائية
| Counter Type | 4-stage Johnson counter |
| Decoded Output Count | 8 outputs |
| Counter Width | 4 bit |
| Logic Family | CMOS |
| Count Direction | Up |
| عدد الدبابيس | 16 pins |
| العلبة | 16-pin CDIP (J) |
| درجة حرارة التشغيل | -55°C to +125°C |
| Minimum Operating Supply Voltage | 3 V |
| Typical Operating Supply Voltage | 3.3 V, 5 V, 9 V, 12 V, or 15 V |
| Input Functions | Clock, reset, and clock inhibit |
| Clock Input | Schmitt-trigger action |
| Packaging | Tube |
| Product Classification | Counter/Divider |
دليل تكوين أطراف CD4022BF 16-pin cdip (j)
تكوين الأطراف لـ CD4022BF (حزمة 16-pin cdip (j)). تتضمن هذه الدائرة المتكاملة الرقمية GPIO وواجهات الاتصال (UART وSPI وI2C) وأطراف الطاقة. راجع ورقة بيانات الشركة المصنعة لوظائف الأطراف البديلة وخيارات التكوين. ضرورية لتصميم الأنظمة المدمجة وتخطيط PCB.
لا تتوفر بيانات مفصلة لمخطط التوصيلات لـ CD4022BF.
راجع ورقة البيانات للحصول على تكوين الأطراف الكامل.
التطبيقات النموذجية
CD4022BF مناسب لـ 6 التطبيقs: Eight-Step Sequential Control, Frequency Division and Timing Generation, Instrumentation Stepper Control, Relay and Lamp Sequential Activation, Digital State Machine, Legacy Industrial Automation.
Eight-Step Sequential Control
The CD4022BF fits eight-step sequencing systems because its four-stage Johnson-counter core produces eight decoded outputs from one clock. Each decoded output can drive a discrete phase of a machine, test sequence, or timed control event. With a stated operating range of -55°C to +125°C and support for typical supplies from 3.3 V through 15 V, it suits established industrial control equipment. Design the logic so reset initializes the sequence and clock inhibit holds it when advancement is not required.
موصى به
Frequency Division and Timing Generation
The CD4022BF provides eight individually decoded count intervals, making it useful for dividing a periodic input into predictable timing sections. Clock-inhibit permits the count to be suspended, while reset returns the circuit to a defined initial condition. The Schmitt-trigger clock input helps process transitions at levels suitable for CMOS operation. Engineers can use this arrangement for relay sequencing, periodic sampling control, and slow digital timers, provided pulse-width and propagation-delay requirements satisfy the manufacturer timing limits.
موصى به
Instrumentation Stepper Control
In instrumentation, the CD4022BF can organize a measurement or calibration process into eight sequential phases. Each decoded output marks one step and can enable a test channel, select an operating mode, or trigger a short timing interval. The device's 16-pin CDIP package favors insertion into larger, serviceable control boards rather than compact handheld equipment. Its stated -55°C to +125°C range supports industrial environments, but clock margins and transition timing should be checked against the actual measurement chain.
موصى به
Relay and Lamp Sequential Activation
The eight decoded outputs of the CD4022BF can control a sequence of relays, indicators, or lamps without an external binary-to-octal decoder. Each clock transition advances to the next decoded state, allowing a controller to energize one load or scan through a defined order. The broad supply choices permit integration with legacy 5 V, 12 V, and 15 V control systems. Add appropriate driver circuitry for inductive or high-current loads rather than driving them directly from the counter outputs.
موصى به
Digital State Machine
A four-stage Johnson counter with eight decoded outputs provides a compact state-machine implementation for control logic that repeatedly advances through a fixed sequence. The CD4022BF avoids a separate decoder and supports reset-based initialization plus clock-inhibit for conditional state advancement. Its CMOS implementation is appropriate for systems using the stated 3.3 V, 5 V, 9 V, 12 V, or 15 V supplies. Use the decoded outputs only within their specified fan-out and timing limits, especially when driving control signals through additional logic.
موصى به
Legacy Industrial Automation
The CD4022BF is appropriate for legacy industrial automation modules that require a reliable eight-state sequencer and a through-hole footprint. Its 16-pin CDIP package and tube presentation support repair and production processes built around leaded packages. The stated supply range of 3 V to 15 V, plus the -55°C to +125°C operating range, covers many industrial environments. During modernization, verify that every associated input remains CMOS-compatible and that the replacement circuit does not exceed the counter's specified output-current and timing limits.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ CD4022BF — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | CD4022BF3 | CD4022BF3A03 |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 16-pin CDIP (J) | 16-pin CDIP (J) | 16-pin CDIP (J) |
| Counter Type | 4-stage Johnson counter | CD4022-family counter | CD4022-family counter |
| Decoded Outputs | 8 outputs | CD4022-family 8 decoded outputs | CD4022-family 8 decoded outputs |
| Counter Width | 4 bit | 4 bit | 4 bit |
| Logic Family | CMOS | CMOS | CMOS |
| Minimum Operating Supply Voltage | 3 V | 3 V | 3 V |
| Operating Temperature | -55°C to +125°C | -55°C to +125°C | -55°C to +125°C |
| Input Functions | Clock, reset, and clock inhibit | Clock, reset, and clock inhibit | Clock, reset, and clock inhibit |
أبرز الفروقات
- Integrated eight-output decoding (مقابلCD4022BF3)
- Wide operating-temperature capability (مقابلCD4022BF3A03)
- Clocking and state-control functions (مقابلCD4022BF3)
ملاحظات التصميم
Do not allow clock, reset, or clock-inhibit inputs to float. Although the clock uses Schmitt-trigger action, the other control inputs still require defined logic levels to prevent unwanted state advancement or excess current. Establish reset and inhibit states during power-up, and ensure every connected source remains within the device's permitted input-voltage range for the selected supply.
The CD4022BF uses a 16-pin CDIP footprint, so verify the physical pin numbering and lead spacing against the manufacturer package drawing before assembly. Keep the clock trace away from decoded-output and switching-node routes to reduce false clock transitions. If the board combines this counter with faster logic, maintain a deliberate ground-return path and use the datasheet timing characteristics to assess clock margin.
Power the counter from a stable supply within the documented operating range and decouple the supply pins close to the package using the capacitance and placement specified in the manufacturer guidance. CMOS input transitions can produce supply-current spikes, so adequate local decoupling is especially important when decoded outputs change rapidly. Confirm that the supply source can accommodate the aggregate dynamic load from all eight outputs and attached logic.
Use the Schmitt-trigger clock behavior as part of the input design rather than treating the clock like a conventional fixed-threshold CMOS input. Check the source rise and fall times against the datasheet timing requirements, keep the clock route short, and avoid intermediate buffers with excessive overshoot or ringing. For long interconnections, choose an interface and protection scheme that preserves clean transitions.
معلومات الامتثال
No specific RoHS, REACH, lead-free, halogen-free, or conflict-minerals status is stated in the manufacturer or distributor documentation for this product.
