CD4029BD - 11MHz Up/Down Counter | Texas Instruments
MPN: CD4029BD ✓ Hoạt độngCD4029BD Tóm tắt
A CMOS up/down counter is a digital logic IC that increments or decrements a binary count in response to clock transitions and control signals. The CD4029BD family belongs to the CD4000 CMOS logic hierarchy, combining counter, divider, and control functions in a single integrated circuit. Unlike a general-purpose microcontroller, it provides dedicated counting hardware that can operate deterministically with limited external logic, making it useful in timing, event-counting, and industrial control applications.
The counter supports binary or decade counting configurations, allowing it to be adapted to different numerical bases and counting sequences. Its rising-edge triggering means the count changes on the active clock transition rather than throughout the high or low interval. The 11 MHz operating point supports relatively fast counting for a classic CMOS logic device, while the broad 3 V to 18 V supply range allows operation across multiple supply environments.
The CDIP-16 package is a through-hole format intended for insertion into printed circuit board sockets or plated holes. Its lead arrangement follows the 16-pin dual in-line package format, with two rows of eight leads on a 0.300-inch pitch. Ceramic-sealed CDIP construction can also support applications requiring environmental protection and stable operation over a broad temperature range.
Typical uses include industrial event counters, programmable timers, frequency division, test-equipment sequencing, digital control loops, and embedded counters that supplement a host microcontroller. Designers should confirm clock edge behavior, mode controls, and output states against the manufacturer pin description and truth table before committing a PCB layout.
The principal design considerations are supply decoupling, clock-signal integrity, and correct handling of asynchronous control inputs. A low-impedance bypass capacitor should be placed close to the power pins, while the clock trace should remain short and avoid crossing noisy switching nodes. The counter should also be initialized to a known state if the system depends on a defined count after power-up.
This product summary combines the manufacturer product description with package, operating-range, and clock-frequency information and adds practical guidance for selecting and implementing the CD4029BD in count-and-control systems.
Bộ thay thế dễ dàng lắp đặt cho CD4029BD — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Không có bộ thay thế dễ dàng lắp đặt sẵn có cho sản phẩm này.
Yêu cầu các bộ thay thếCD4029BD Tỷ lệ tối đa & tính chất điện
| Product Type | Presettable binary/decade up/down counter |
| Logic Family | CD4000 CMOS series |
| Supply Voltage Range | 3 V to 18 V |
| Tần số xung maksimum | 11 MHz |
| Clock Triggering | Rising edge |
| Counting Modes | Binary and decade up/down counting |
| Presettable Count | User-programmable count state |
| Number of Counter Elements | 1 counter element |
| Package Type | CDIP-16 |
| Số chân | 16 pins |
| Package Lead Span | 0.300 inch (7.62 mm) |
| Kiểu lắp đặt | Through-hole |
| Technology | CMOS |
Hướng dẫn cấu hình chân CD4029BD 0.300 inch (7.62 mm)
Cấu hình chân cho CD4029BD (0.300 inch (7.62 mm) 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 CD4029BD.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
CD4029BD phù hợp cho 6 Áp dụngs: Industrial Event Counting, Programmable Timing Control, Frequency Division, Digital Test Equipment Sequencing, Stepper Motor Pulse Positioning, Automated Sorting and Batch Control.
Industrial Event Counting
The CD4029BD fits fixed industrial counting tasks where sensors generate clean pulses and the controller must count upward, downward, or from a preset state. Its rising-edge counting behavior and 11 MHz maximum clock frequency provide ample timing margin for many pulse-counting systems operating below the device limit. The 3 V to 18 V supply range also permits integration with multiple CMOS logic levels. Engineers should condition noisy sensor outputs, use Schmitt-triggered stages where required, and ensure the maximum operating temperature meets the enclosure environment. The dedicated counter is especially useful when a microcontroller is unnecessary and the control sequence is fixed.
Được đề xuất
Programmable Timing Control
The CD4029BD can form the counting element of a programmable timer because its preset capability allows the counter to begin from a defined value and advance toward a terminal count. This approach is useful for machine timing, delayed actuation, and process sequencing where the timing interval is defined by the initial preset and clock frequency. The 11 MHz operating limit supports fast timing resolution, although the actual minimum interval must also satisfy the counter's logic and output propagation requirements. External gating and output decoding determine how the terminal state produces the final timing action.
Được đề xuất
Frequency Division
The CD4029BD is appropriate for frequency division when a clock must be reduced to a lower-rate enable pulse for sequencing or control. Its binary counting capability allows selected output states to create division ratios, while decade operation provides convenient ten-based stepping. For clean results, the source clock should have controlled rise and fall times, and the divider outputs should not be overdriven. The part's 11 MHz maximum input frequency offers useful margin for many low-to-moderate-speed industrial clock systems. Select the proper output tap and include reset or preset behavior in the system timing specification.
Được đề xuất
Digital Test Equipment Sequencing
The CD4029BD can implement repeatable step sequencing in test equipment, panel meters, and diagnostic fixtures that must advance through a series of test states. Preset control lets the equipment load a specific starting count, while up or down operation determines the direction of the sequence. The 16-pin CDIP format supports conventional through-hole prototyping and repair workflows. Engineers should define the legal state transitions, initialize the count after power-up, and synchronize external commands with the clock. The dedicated counter is useful when a fixed hardware sequence is preferable to software-controlled state management.
Được đề xuất
Stepper Motor Pulse Positioning
The CD4029BD can count command or position pulses in a stepper-motor control system, providing a hardware count of movement steps without requiring a microcontroller to execute every counting operation. The rising-edge input works naturally with pulse trains, and the programmable preset can support repeatable travel commands or incremental positioning. Signal-conditioning logic should prevent motor-driver noise from propagating back into the counter. The 3 V to 18 V range facilitates interface design, while the 11 MHz maximum frequency covers many pulse-rate requirements. Position limits and homing behavior must be implemented consistently with the counter's preset and direction controls.
Được đề xuất
Automated Sorting and Batch Control
The CD4029BD supports batch counting in sorting, packaging, and material-handling systems where each accepted item generates a pulse. A preset count establishes the batch size, and the counter output can trigger the actuator or request the next item after the target quantity is reached. Its dedicated hardware operation supports deterministic throughput without continuous processor intervention. Inputs should be debounced and optically isolated when they originate from long cables or noisy machinery. The design must also define behavior for overflow, jam, reset, and premature-stop conditions so that a count comparison does not cause unintended actuation.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho CD4029BD — 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 |
|---|---|
| Package | CDIP-16 |
| Brand | Texas Instruments |
| Product Type | Presettable binary/decade up/down counter |
| Supply Voltage Range | 3 V to 18 V |
| Maximum Clock Frequency | 11 MHz |
| Clock Triggering | Rising edge |
| Logic Technology | CMOS |
| Counting Direction | Up/down |
| Counting Base | Binary and decade |
| Mounting Style | Through-hole |
Bảo phân biệt quan trọng
- Dedicated preset up/down counting in a single CMOS IC (vsCD4060BK)
- Rising-edge counting with a stated 11 MHz maximum frequency (vsCD4020BK)
- Broad 3 V to 18 V CMOS operating range (vsMicrocontroller-based counter)
Ghi chú thiết kế
Place the manufacturer-recommended bypass capacitor immediately adjacent to the supply and ground pins, and route each connection with minimum loop area. A compact supply path helps suppress switching disturbances that could couple into the clock or control inputs. Because the CD4029BD supports a 3 V to 18 V supply range, verify that the capacitor voltage rating, logic-level thresholds, and attached interface devices are suitable for the selected operating voltage.
Keep the clock trace short and provide a clean rising edge at the counter input. Avoid routing it parallel to high-current switching traces, isolate it from motor-driver outputs, and use a gate or conditioning stage when the source has slow edges or excessive noise. Remember that the CD4029BD advances on the rising edge, so input polarity and transition timing must agree with the external pulse-generating circuit.
Design the 16-pin CDIP footprint for a 0.300-inch, or 7.62 mm, lead span and follow the manufacturer's package drawing for hole diameter and row spacing. Keep digital counter traces away from analog inputs, relay contacts, and power-converter switches. Define reset and preset states in the circuit so that power-up does not leave the counter operating from an unintended count value.
Do not substitute another CD4029 suffix solely because the base family name matches. Package construction, temperature rating, qualification, and ordering suffix can change between otherwise related devices. Confirm the pin-description table, operating truth table, and mechanical drawing before approving a replacement. Also avoid treating the maximum clock frequency as a guarantee at every supply voltage; use the manufacturer operating conditions for the actual electrical environment.
Thông tin tuân thủ
No explicit compliance statements for the exact CD4029BD ordering variant are included in the manufacturer product information. AEC-Q100 is treated as not applicable because the product is a general-purpose logic IC rather than an automotive-qualified device.
