CD4040BE 12-Stage CMOS Counter | Texas Instruments
MPN: CD4040BE ✓ AktifCD4040BE Genel Bakış
A binary counter is a sequential digital circuit that stores or tracks a number as a binary bit pattern. Its operating position in the digital-logic hierarchy is counter IC, digital logic IC, and ultimately semiconductor. The CD4040BE belongs to the CMOS 4000-series family and combines clocked master-slave stages with a reset function. Its 12 stages allow division of the input clock by powers of two from 2 through 4096 when the corresponding output is used as a clock source.
The main engineering features are the 12-stage counting architecture, binary counter and divider capability, negative-edge counting, and a high-level reset input. Each output exposes a different power-of-two division stage, allowing one clock source to serve several timing domains. Because the implementation is ripple-carry, propagation accumulates through the internal flip-flop stages, so maximum operating frequency and the usable timing margin depend on the number of enabled stages.
The master-slave stage arrangement gives the counter stable outputs under the specified clocking conditions. The RESET function provides a defined initialization state for counters used as dividers, programmable timers, and sequential digital systems. With a 16-pin PDIP package, the CD4040BE is intended for through-hole assembly and is suitable for prototypes, legacy industrial equipment, timing controllers, and educational logic systems.
Typical uses include binary event counting, frequency division, pulse-train generation, programmable timing references, and sequential control logic. The device is particularly useful when multiple divide ratios are required from one clock input. In digital systems, selected outputs can produce clocks at 1/2 through 1/4096 of the input frequency, while the RESET input can synchronize the counter with the rest of the system.
For a new design, verify clock-edge polarity, reset timing, supply-voltage limits, and maximum operating frequency against the manufacturer datasheet before assigning outputs. Keep clock and reset traces away from noisy switching nodes, provide the required bypassing close to the supply pins, and use unused counter outputs only according to the device's specified logic states. The DIP outline offers generous spacing for hand assembly and through-hole prototyping.
This product page combines the CD4040BE architecture, package details, pin assignments, sourcing guidance, replacement analysis, and practical circuit-planning notes to support faster engineering decisions beyond a basic distributor specification listing.
Drop-in alternatifler için CD4040BE — aynı paket, pin-başına uyumlu. PCB yeniden montajı gerektiren farklı paket bileşenleri dışlanmıştır.
MC14040BCP
✅ Yerleştirme📋 Katalogda Olmayan Referans Alternatifi
HCF4040BEY
✅ Yerleştirme📋 Katalogda Olmayan Referans Alternatifi
HEF4040BP
✅ Yerleştirme📋 Katalogda Olmayan Referans Alternatifi
MC74HC4040AN
✅ Yerleştirme📋 Katalogda Olmayan Referans Alternatifi
HCF4040BE
✅ Yerleştirme📋 Katalogda Olmayan Referans Alternatifi
CD4040BE Maksimum Değerlendirmeler & Elektriksel Özellikler
| Product Type | 12-stage CMOS ripple-carry binary counter/divider |
| Counting Elements | 1 element |
| Counter Resolution | 12 bits |
| Clock Triggering | Negative edge |
| Reset Input | Active high |
| Logic Technology | CMOS |
| Paket | 16-pin PDIP |
| Montaj Türü | Through-hole |
| Pin Sayısı | 16 pins |
CD4040BE Pin Yapısı
| Pin 1 | CLK — Counting clock input; the counter advances on the negative transition |
| Pin 2 | Q0 — First binary counter output |
| Pin 3 | Q1 — Second binary counter output |
| Pin 4 | Q2 — Third binary counter output |
| Pin 5 | Q3 — Fourth binary counter output |
| Pin 6 | Q4 — Fifth binary counter output |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RESET — Active-high counter reset input |
| Pin 9 | Q8 — Ninth binary counter output |
| Pin 10 | Q7 — Eighth binary counter output |
| Pin 11 | Q6 — Seventh binary counter output |
| Pin 12 | Q5 — Sixth binary counter output |
| Pin 13 | Q10 — Eleventh binary counter output |
| Pin 14 | Q9 — Tenth binary counter output |
| Pin 15 | Q11 — Twelfth binary counter output |
| Pin 16 | VDD — Positive supply input |
Tipik Uygulamalar
CD4040BE için uygundur 6 uygulamas: Binary Event Counting, Power-of-Two Frequency Division, Programmable Pulse-Train Generation, Digital Timing Controller, Industrial Sequence Counter, Educational Logic and Prototype Circuits.
Binary Event Counting
The CD4040BE is well suited to binary event counting because it contains 12 master-slave counter stages and advances once on each negative clock transition. Its Q0 through Q11 outputs expose the count as a 12-bit binary value, allowing an external controller to observe one bit per stage or use selected outputs as encoded event indications. The active-high RESET input gives the system a deterministic starting point. Because this is a ripple-carry implementation, propagation through multiple enabled stages must be considered when the clock rate or simultaneous-output timing is critical.
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Power-of-Two Frequency Division
A primary use for the CD4040BE is deriving multiple power-of-two clock rates from one input. Q0 through Q11 provide division ratios from 2 through 4096, allowing slow timing signals to be generated without requiring a separate divider for each rate. The negative-edge counting behavior must match the surrounding clocking scheme, and RESET can synchronize restart events. This architecture is useful when a controller, display system, or data sampler needs several related rates derived from one stable source, provided the operating frequency remains within the manufacturer timing limits.
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Programmable Pulse-Train Generation
The CD4040BE can generate a divided pulse train by using a selected binary output as the source for another circuit. Ratios of 2, 4, 8, and higher powers of two allow the repetition rate of a clocked output to be reduced without a programmable divider. The 12 outputs also make it possible to select a rate with a discrete output-selection network. Reset provides a common rearming point for repeatable pulse sequences. Designers should account for the asymmetric propagation path of a ripple counter and verify reset release behavior against clock edges.
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Digital Timing Controller
The CD4040BE can serve as the timing backbone of a digital controller by dividing a system clock and exposing multiple count boundaries. Q0 through Q11 allow supervisory logic to detect coarse time intervals without performing binary arithmetic itself. The active-high RESET line supports initialization after power application or synchronization with another subsystem. The device is particularly appropriate for legacy CMOS control boards where a through-hole counter offers a simple implementation, but the timing budget must include stage-to-stage propagation and the response to clock edges close to a counter-output transition.
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Industrial Sequence Counter
A CD4040BE can count recurring events such as machine cycles, product positions, or actuator steps in an industrial sequence-control system. The 12-bit count range supplies 4096 states, while the separate output stages can trigger actions at powers-of-two intervals. RESET allows the sequence to begin from a defined state after each batch or fault recovery. A ruggedized external clock interface and appropriate signal conditioning should be used when the source is noisy, while the CMOS counter itself handles the digital division and state tracking.
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Educational Logic and Prototype Circuits
The 16-pin PDIP package and externally visible counter outputs make the CD4040BE particularly approachable for breadboard, training, and laboratory prototype work. Students can observe the binary sequence across Q0 through Q11, connect different outputs to demonstrate division ratios of 2 through 4096, and exercise the active-high RESET input. Because every stage is accessible, the device also supports experiments involving clock polarity, synchronous-looking output observation, and counter-state decoding. A current-limited supply and a clean clock source are important during breadboard assembly to avoid accidental multiple clock transitions.
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Önerilen Ürünler Özeti
Mühendislik referans verileri: CD4040BE — karşılaştırma, tasarım rehberi ve uyumluluk bilgileri.
Seçim Kılavuzu
Alternatiflerle Karşılaştırma
| Parametre | Bu Ürün | MC14040BCP | HCF4040BEY | HEF4040BP | MC74HC4040AN | HCF4040BE |
|---|---|---|---|---|---|---|
| Package | 16-pin PDIP | 16-pin PDIP - same | 16-pin PDIP - same | 16-pin PDIP - same | 16-pin PDIP - same | 16-pin PDIP - same |
| Brand | Texas Instruments | onsemi | STMicroelectronics | NXP Semiconductors | onsemi | STMicroelectronics |
| Counter Stages | 12 stages | 12 stages | 12 stages | 12 stages | 12 stages | 12 stages |
| Counter Resolution | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits |
| Logic Family | CD4000-series CMOS | CD4000-style CMOS | HCF4000-series CMOS | HEF4000-series CMOS | 74HC CMOS | HCF4000-series CMOS |
| Reset Function | Active-high RESET clears the counter | Counter reset | Counter reset | Counter reset | Counter reset | Counter reset |
| Mounting Style | Through-hole | Through-hole | Through-hole | Through-hole | Through-hole | Through-hole |
| Pin Count | 16 pins | 16 pins | 16 pins | 16 pins | 16 pins | 16 pins |
Ana Farklılayıcılar
- Provides twelve externally accessible binary counter stages (karşılaştırma:CD4020BK)
- Retains the standard 16-pin DIP counter footprint (karşılaştırma:MC74HC4040AN)
- Uses documented negative-edge counting (karşılaştırma:MC14040BCP)
Tasarım Notları
Treat CLK as a timing-sensitive net even though the CD4040BE is a ripple-carry counter. Route it away from switching-node and high-current traces, minimize stubs, and use a ground reference that remains stable under the digital load. The datasheet identifies negative-edge counting, so a clock source that transitions on both edges or contains narrow spikes can cause an extra count.
Place the required bypass capacitor close to VDD on pin 16 and connect it to a low-impedance VSS return on pin 7. Avoid routing the return through noisy output loads. The 16-pin PDIP footprint allows generous component spacing, but clock and RESET conductors should remain short enough to avoid accidental pickup, particularly in industrial or high-current environments.
Do not assume that any 4040 counter is automatically interchangeable merely because it has 16 pins. Confirm that the alternative has 12 stages, corresponding Q0 through Q11 outputs, compatible RESET polarity, and the required clock edge. A 14-stage CD4020-type device has extra stages and different output behavior even though its package can be similar.
Check the clock source and every connected CMOS input so that no signal exceeds the datasheet's absolute maximum and recommended input limits. Decoupling requirements should follow the manufacturer specification rather than a generic ceramic-capacitor rule. If the CD4040BE drives a load through an external buffer, include the buffer's supply current when estimating the total power demand.
Uyumluluk Bilgisi
Compliance attributes were not stated in the retrieved manufacturer or distributor pages. Review the current Texas Instruments product documentation and applicable material declarations before production use.