CD4022BF 4-Bit CMOS Octal Counter | Texas Instruments
MPN: CD4022BF ✓ Hoạt độngCD4022BF Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho CD4022BF — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
CD4022BF3
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
CD4022BF3A03
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
CD4022BF Tỷ lệ tối đa & tính chất điện
| Counter Type | 4-stage Johnson counter |
| Decoded Output Count | 8 outputs |
| Counter Width | 4 bit |
| Logic Family | CMOS |
| Count Direction | Up |
| Số lượng chân | 16 pins |
| Hộp | 16-pin CDIP (J) |
| Nhiệt độ hoạt động | -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 |
Hướng dẫn cấu hình chân CD4022BF 16-pin cdip (j)
Cấu hình chân cho CD4022BF (16-pin cdip (j) gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho CD4022BF.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
CD4022BF phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho CD4022BF — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Integrated eight-output decoding (vsCD4022BF3)
- Wide operating-temperature capability (vsCD4022BF3A03)
- Clocking and state-control functions (vsCD4022BF3)
Ghi chú thiết kế
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.
Thông tin tuân thủ
No specific RoHS, REACH, lead-free, halogen-free, or conflict-minerals status is stated in the manufacturer or distributor documentation for this product.
