CD4029BE - 4-Bit CMOS Presettable Up/Down Counter | Texas Instruments
Артикул: CD4029BE ✓ АктивенCD4029BE Обзор
A counter IC is a member of the logic IC family: it belongs to the digital logic hierarchy that runs from counter and divider blocks up to logic gates, then to digital integrated circuits, and finally to semiconductor devices. The CD4000 series, of which the CD4029B is a member, is the classic complementary-MOS (CMOS) logic family recognised for wide supply-voltage tolerance, high noise immunity and low power consumption compared with 74xx TTL logic. The CD4029B is the counting block of that family that can count either up or down, in binary or in BCD decade mode.
Key features of the CD4029B include a single clock input with look-ahead carry in both counting modes, a Binary/Decade select input, an Up/Down control input, a Preset Enable input, a Load input and four individual preset (J) data inputs, plus four counter outputs Q1 to Q4 and a Carry Out output. The counter is fully synchronous and advances on the positive clock edge, so state changes are clean and predictable for digital control and sequencing logic.
Technically the device is a purely static CMOS design operating from a single 3 V to 18 V supply, which allows it to run directly from 5 V, 9 V or 12 V rails without level translation. Because it is a presettable counter with parallel load and carry logic, it can be used as a modulus divider, a programmable delay generator, a bidirectional event counter or the sequencing core of a stepper-motor indexer.
Typical applications include industrial sequence and batch counters, frequency dividers and rate meters in test and measurement equipment, digital timers and clock-generation blocks, stepper-motor position indexing, and general digital control logic in equipment built around the CD4000 series.
When designing with the CD4029BE, always tie every unused preset input to a defined logic level and place a 100 nF ceramic decoupling capacitor close to the supply pins. If the clock source can overshoot or ring, clamp it or add a small series resistor, because a CMOS clock input driven above the supply rail can latch the device into a static state.
This page brings together manufacturer specifications, price and availability context, drop-in alternatives from the CD4000 family, comparison tables and practical design notes so that engineers can evaluate the CD4029BE against equivalent counter ICs before committing to a layout or a bill of materials.
Аналоги без доработки для CD4029BE — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
CD4029BF
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MC14029BCPG
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MC14029BN
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
HEF4029BP
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
CD4029BC
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
CD4029BE Максимальные параметры и электрические характеристики
| Product Type | CMOS Presettable Up/Down Counter |
| Manufacturer | Texas Instruments |
| Logic Family | CD4000 series CMOS |
| Counter Type | Binary / BCD decade up or down counter |
| Number of Elements | 1 counter element |
| Counter Resolution | 4 bit |
| Supply Voltage Range | 3 V to 18 V |
| Максимальная тактовая частота | 11 MHz |
| Количество выводов | 16 pins |
| Корпус | PDIP-16 (N) through-hole |
| Тип монтажа | Through-hole |
| Диапазон рабочих температур | -55 C to +125 C |
| Clock Trigger Type | Positive edge |
| Carry Function | Look-ahead carry in both counting modes |
| Control Inputs | Clock, Up/Down, Binary/Decade, Preset Enable, Load, Carry In |
| Preset Data Inputs | 4 individual J (preset) inputs |
| Outputs | Q1 to Q4 counter outputs plus Carry Out |
| Logic Level | CMOS, rail-to-rail |
| Datasheet Page Count | 7 pages |
Конфигурация выводов CD4029BE
| Контакт 1 | CLOCK — Counting clock input, counts on positive edge |
| Контакт 2 | UP/DOWN — Direction control input, selects up or down counting |
| Контакт 3 | PRESET ENABLE — Enables the four preset (J) data inputs |
| Контакт 4 | LOAD — Parallel load input, loads preset data into the counter |
| Контакт 5 | BINARY/DECADE — Selects binary or BCD decade counting mode |
| Контакт 6 | CARRY IN — Carry in (clock enable) for cascading counter stages |
| Контакт 7 | Q1 — Least significant counter output |
| Контакт 8 | VSS — Ground supply pin |
| Контакт 9 | Q4 — Most significant counter output |
| Контакт 10 | CARRY OUT — Look-ahead carry output for cascading |
| Контакт 11 | J0 — Individual preset data input for Q1 |
| Контакт 12 | J1 — Individual preset data input for Q2 |
| Контакт 13 | J2 — Individual preset data input for Q3 |
| Контакт 14 | J3 — Individual preset data input for Q4 |
| Контакт 15 | VDD — Positive supply pin, 3 V to 18 V |
| Контакт 16 | NC — No connection on this package option |
Типичное применение
CD4029BE подходит для 6 применениеs: Industrial Batch and Piece Counters, Frequency Divider and Rate Meter, Stepper Motor Indexing and Position Counting, Digital Timer and Sequence Generator, Test and Measurement Instrumentation, Digital Control Logic for Legacy Equipment.
Industrial Batch and Piece Counters
The CD4029BE suits industrial batch and piece counting because it counts either up or down and can be loaded with a preset value, which allows a machine to count down from a set batch size and stop at zero without any external arithmetic. Running it from a 12 V or 15 V industrial rail removes the need for level translation, and the -55 C to +125 C rating covers factory environments. The look-ahead carry lets several stages be chained into a multi-digit counter so a 4-bit stage can drive a following stage without long ripple delay, while the 11 MHz maximum clock rate leaves ample headroom for noisy sensor pulses. In practice the counter stage is often followed by latch and display drivers, with the carry out used to trigger the next decade.
Рекомендуется
Frequency Divider and Rate Meter
The CD4029BE works as a programmable frequency divider because a 4-bit counter with a parallel load can be configured for modulus-N division by loading the parallel count on the terminal count. With a maximum clock rate of 11 MHz, a single stage can divide a high-frequency reference down into a kilohertz or hertz base that drives timing or measurement blocks, and cascading stages multiplies the division ratio without adding much logic. Because the CD4000 series is true CMOS, the counter presents high noise immunity, which matters when the reference signal comes from a noisy crystal oscillator or a transformer-coupled source. The binary/decimal mode also lets the same device produce either a binary divider output or a decade pulse train for stepper indexing.
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Stepper Motor Indexing and Position Counting
The CD4029BE is a natural fit for stepper motor indexing because its BCD decade mode counts exactly ten states per motor step position, matching the ten steps per revolution of a typical 1.8 degree stepper. The up/down control input allows a single device to index forward for travel and backward for homing, and the parallel preset plus load inputs let the system reload the known home position after a power cycle. Its wide 3 V to 18 V supply tolerance means the counter can run directly from the same 12 V or 24 V-derived rail that feeds the driver electronics, reducing level shifting. The four Q outputs are typically decoded into a one-hot or binary step sequence for the driver stage.
Рекомендуется
Digital Timer and Sequence Generator
The CD4029BE can be used as the timing core of a digital timer or sequencer by loading a preset value and counting down under a fixed reference clock, with the terminal count generating the end-of-interval pulse. The 4-bit resolution gives sixteen discrete steps, and cascading two stages extends the timing range into minutes or hours without adding logic. Because the CD4029BE is a static CMOS device it dissipates very little power between clock edges, which suits battery-backed instruments that must hold a time base over long idle periods. The Up/Down input allows the same stage to also count elapsed time upward while a separate sequence stage counts down, letting one package serve both functions.
Рекомендуется
Test and Measurement Instrumentation
In test and measurement equipment the CD4029BE provides the count and divide functions needed for period counters, burst-accurate trigger counters and channel sequencing. Its positive-edge clocking and look-ahead carry keep multi-channel counters in alignment, and the 3 V to 18 V supply range allows the device to sit close to the analog front end without a separate low-noise regulator. In rack and panel instruments the 16-pin PDIP through-hole package is easy to socket for service and module replacement, and the long-established CD4000 family is well supported in legacy instrument designs. The binary/decimal select also lets the same counter drive either a binary word bus to a display controller or a decade strobe sequence to relay matrices.
Рекомендуется
Digital Control Logic for Legacy Equipment
The CD4029BE remains valuable as a building block inside legacy and mid-life equipment built around CD4000-series logic, where designs commonly mix the CD4029B with 4000-series gates, decoders and flip-flops. It can be used for debounced switch counting, event sequencing, or as a programmable delay element in relay-control panels, and the wide supply range means it tolerates the 15 V rails common in older industrial equipment. Its through-hole PDIP-16 package is mechanically straightforward to replace on a hand-repair or re-spin board. Because the CD4000 family is characterised for high noise immunity, the counter is more dependable than TTL logic in cabinets with switching contactors and long unscreened wiring runs.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для CD4029BE — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | CD4029BF | MC14029BCPG | MC14029BN | HEF4029BP | CD4029BC |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | onsemi | onsemi | NXP Semiconductors | onsemi |
| Package | PDIP-16 (N) through-hole | PDIP-16 (N) through-hole - same footprint | PDIP-16 through-hole - same footprint | PDIP-16 through-hole - same footprint | PDIP-16 through-hole - same footprint | PDIP-16 through-hole - same footprint |
| Counter Type | 4-bit binary / BCD decade, up or down | 4-bit binary / BCD decade, up or down | 4-bit binary / BCD decade, up or down | 4-bit binary / BCD decade, up or down | 4-bit binary / BCD decade, up or down | 4-bit binary / BCD decade, up or down |
| Logic Family | CD4000 series CMOS | CD4000 series CMOS | MC14000 series CMOS | MC14000 series CMOS | HEF4000 series CMOS | CD4000 series CMOS |
| Preset and Load Control | Preset Enable, Load and four individual J inputs | Preset Enable, Load and four individual J inputs | Preset Enable, Load and four individual J inputs | Preset Enable, Load and four individual J inputs | Preset Enable, Load and four individual J inputs | Preset Enable, Load and four individual J inputs |
| Number of Pins | 16 pins | 16 pins | 16 pins | 16 pins | 16 pins | 16 pins |
Ключевые отличия
- Combines up/down counting with BCD decade mode in one package (против CD4516BE)
- Wider supply range than typical logic alternatives (против MC14029BN)
- Industrial temperature grade for harsh environments (против MC14029BN)
- Look-ahead carry simplifies multi-digit chains (против CD4029BC)
Заметки по проектированию
Never leave the four preset (J) inputs or the Carry In pin floating. In CMOS an undefined input can sit in the linear region of the transfer characteristic and draw crowbar current, raising supply noise and, in the worst case, forcing the counter into an indeterminate state. Tie every unused preset input to a fixed logic level through a resistor, hold Carry In at the defined enable level, and use the Preset Enable and Load inputs so that preset data is only applied during a deliberate load cycle. This single discipline removes the most common field failures seen in CD4000-series counter boards.
Place a 100 nF ceramic decoupling capacitor as close as possible to the VDD pin and a bulk capacitor of 1 uF or more across the supply pins, with a short ground return to the VSS pin. CMOS counters draw high current spikes on the clock edge, and long supply traces between the bypass capacitor and the device create an inductive voltage step that can couple noise into adjacent analog stages. On a mixed-signal board keep the counter supply return path separate from the analog ground current path, or use a single-point connection, so the clock-edge current does not modulate the analog reference node.
The CD4029BE counts on the positive clock edge and its 11 MHz rating applies to a clean, properly referenced clock. If the clock is derived from a mechanical switch, a relay contact or a long cable, add a debounce network and a Schmitt-trigger conditioning stage, because multiple edges on one contact bounce produce several counts. If the clock source can overshoot above VDD or below VSS, protect it with a series resistor and clamp, since a CMOS input driven beyond the supply rails can latch the stage and require a power cycle.
Estimated: in a 12 V supply system running the counter at 1 MHz with roughly 10 mA average dynamic current at a 50 percent duty factor, dissipation is approximately 12 V x 10 mA = 0.12 W in the DIP-16 plastic package. At that level a PDIP-16 with good copper area on a through-hole board stays close to ambient, but in a sealed enclosure with no airflow, verify the junction temperature against the -55 C to +125 C rating of the device before committing to the layout.
Информация о соответствии
The CD4029B family is a mature CD4000-series CMOS line; no explicit RoHS, REACH, lead-free or halogen-free declaration was present in the technical material reviewed for this page, so all material-compliance fields are recorded as unknown rather than assumed. Confirm the current declaration on the manufacturer product page before releasing the part into a regulated assembly.
