CD4033BD - 5-Bit CMOS Decade Counter | Texas Instruments
N.º da peça: CD4033BD ✓ AtivoCD4033BD Visão geral
A decade counter is a sequential digital-logic component that counts ten states, from zero through nine, and provides decoded outputs for each count. The CD4033BD belongs to the CD4000 CMOS logic family, a subgroup of counter and divider ICs within logic ICs, digital counters, and broader semiconductor products. Its ten decoded output lines allow a display or control system to respond directly to the current count without external binary-to-decimal decoding.
Key features include a 5-bit counter section, 16-pin DIP-compatible construction, through-hole mounting, and a stated operating temperature range of -55 °C to 125 °C. The verified product data identifies the CD4033BD as a positive-edge, decade counter with one counter element, a 700 ns propagation delay, and operation from a 5 V supply. The military-temperature grade makes it suitable for equipment requiring an extended temperature range.
The CD4033BD is a synchronous CMOS counter with decoded decade outputs. The CLK input advances the count on the positive edge, while the reset and clock-control inputs provide basic sequencing control. Its CMOS architecture supports low-power operation in suitable systems and provides a direct interface to decade-oriented displays, counters, and industrial timing circuits.
Typical applications include decade frequency dividers, digital frequency counters, switch-debounce and event-counting systems, display sequencing, industrial panel timers, and embedded timing modules. The decoded Q outputs are especially useful when a design needs ten mutually exclusive output states rather than a binary word.
Designers should verify the exact voltage limits, input timing, output-drive capability, and reset behavior against the manufacturer datasheet before using it as a direct substitute in a new circuit. The through-hole package simplifies prototyping and repair, but modern compact products may require a surface-mount counterpart rather than the DIP package.
This page consolidates verified distributor pricing, package and timing information, functional application guidance, and pin-level implementation notes so engineers can evaluate the CD4033BD for counter and decade-decoder designs without relying on a single product listing.
Alternativas drop-in para CD4033BD — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
CD4033BE
✅ Drop-InConsulte o preço
Ver ficha técnica →CD4033BD Classificações máximas e características elétricas
| Counter Type | Decade counter |
| Number of Counter Elements | 1 element |
| Number of Decoded Outputs | 10 outputs |
| Counting Edge | Positive edge |
| Propagation Delay | 700 ns |
| Tensão de alimentação | 5 V |
| Faixa de temperatura de operação | -55 °C to 125 °C |
| Logic Family | CMOS |
| Terminal Count | 16 terminals |
| Package Code | DIP |
| Encapsulamento | 16-CDIP, 0.300 inch (7.62 mm) |
| Tipo de montagem | Through-hole |
| Package Shape | Rectangular |
| Temperature Grade | Military |
| Primary Function | Display driver counter |
| Manufacturer | Texas Instruments |
Configuração de pinos do CD4033BD
| Pino 1 | CLK — Master clock input |
| Pino 2 | CL — Clock inhibit or count-enable input |
| Pino 3 | CLK PULSE — Clock pulse input |
| Pino 4 | MR — Master reset input |
| Pino 5 | Q0 — Decoded count output 0 |
| Pino 6 | Q1 — Decoded count output 1 |
| Pino 7 | Q2 — Decoded count output 2 |
| Pino 8 | Q3 — Decoded count output 3 |
| Pino 9 | Q4 — Decoded count output 4 |
| Pino 10 | CARRY — Carry output |
| Pino 11 | VDD — Positive supply terminal |
| Pino 12 | Q9 — Decoded count output 9 |
| Pino 13 | Q8 — Decoded count output 8 |
| Pino 14 | Q7 — Decoded count output 7 |
| Pino 15 | Q6 — Decoded count output 6 |
| Pino 16 | VSS — Ground or negative supply terminal |
Aplicações típicas
CD4033BD é adequado para 6 aplicaçãos: Decade Frequency Divider, Digital Event Counter, Display Sequencing Controller, Industrial Timer Module, Frequency Counter Front End, Modulo-10 Control Logic.
Decade Frequency Divider
The CD4033BD is well suited to decade frequency division because it counts ten states and provides ten decoded outputs in a 16-CDIP package. With a verified 700 ns propagation delay and 5 V supply, it can form one stage of a cascaded divider when clock rise and fall times meet the applicable input requirements. The decoded outputs make it easier to observe or select each divide-by-ten interval without external binary-to-decimal decoding. Designers should still synchronize reset release to the clock edge and verify the carry behavior and propagation-delay budget in the complete divider chain.
Recomendado
Digital Event Counter
The CD4033BD can implement a compact decade event counter in instrumentation, control panels, and laboratory equipment. Its ten decoded Q outputs identify the current count directly, and the verified 700 ns propagation delay provides useful timing margin for many low-to-moderate-speed counting systems. The military-temperature rating of -55 °C to 125 °C supports applications with a broad environmental range. In implementation, debounce external contacts, control signal overshoot, and define whether reset should clear the count synchronously or asynchronously for the chosen CD4000-series device documentation.
Recomendado
Display Sequencing Controller
The CD4033BD’s ten mutually exclusive decoded outputs make it useful for sequencing decade displays, indicator banks, and panel-position controls. Unlike a binary counter that requires additional decoding circuitry, the CD4033BD directly identifies counts zero through nine. Its 5 V CMOS supply and 16-pin through-hole package simplify connection in control systems built with discrete logic. The design should confirm output drive for the display or indicator load, provide appropriate reset initialization, and use suitable buffering when fanout or long interconnect paths exceed the device’s specified capabilities.
Recomendado
Industrial Timer Module
The CD4033BD can serve as the decade-state element in an industrial timer that divides a periodic signal into ten equal count intervals. The verified operating range of -55 °C to 125 °C is attractive for equipment exposed to wide temperature variation, while the 700 ns propagation delay helps define how quickly decoded states update. For reliable operation, verify supply-voltage tolerances, clock edge shape, and reset timing. Environmental compliance claims such as RoHS, REACH, or AEC-Q100 should not be inferred and must be confirmed from current manufacturer documentation.
Recomendado
Frequency Counter Front End
The CD4033BD can form part of a decade counter front end for a low-speed frequency or pulse-counting instrument. Each decoded output corresponds to one of ten count positions, which simplifies subsequent indication and logic processing. The 700 ns propagation delay provides a defined timing characteristic for evaluating cascaded stages, and the 16-CDIP package supports conventional through-hole prototyping. Engineers should add input conditioning for noisy or slow-edge signals, preserve the specified clock rise and fall times, and check the output load presented by subsequent counter or display circuitry.
Recomendado
Modulo-10 Control Logic
The CD4033BD is appropriate for control logic that repeats after ten events or operates across ten discrete states. Its decoded outputs reduce the amount of Boolean decoding needed for motors, relays, lamps, or mode selectors, while the 5 V supply integrates easily with CD4000-series CMOS circuitry. The 16-CDIP package is convenient for industrial prototypes and repair-oriented assemblies. Care is required at state transitions: use reset and clock timing that avoid false count increments, and do not exceed the confirmed output-current and transition-time limits of the exact sourced device.
Recomendado
Dados de referência de engenharia para CD4033BD — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | CD4033BE |
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments |
| Brand | Texas Instruments | Texas Instruments |
| Package | 16-CDIP (DIP-16) | 16-pin DIP - same package class |
| Mounting Type | Through-hole | Through-hole |
| Counter Type | Decade counter | Decade counter |
| Number of Terminals | 16 | 16 |
| Logic Family | CMOS | CMOS CD4000 series |
Principais diferenciais
- Wide specified operating-temperature range (vs CD4033BE)
- Documented switching performance (vs CD4033BE)
- Verified package dimensions (vs CD4033BE)
Notas de projeto
Treat the clock input as a potentially sensitive digital signal even though the counter is slow enough for many control applications. Use a clean edge with rise and fall times meeting the manufacturer’s input-transition limits, keep the clock route away from switching-node and relay-coil wiring, and provide a local ground-return path. A Schmitt-trigger buffer may be useful when the source is mechanical, slow, or noisy, but its effect on edge timing must be included in the design.
Do not assume that all CD4033 order codes are interchangeable solely because they use a 16-pin DIP. Before replacing CD4033BD with CD4033BE, verify pin orientation, supply range, output drive, propagation delay, temperature grade, reset behavior, and lifecycle status. The supplied comparison supports package and terminal consistency, but it does not disclose every electrical difference needed for production qualification.
Decouple the 5 V supply close to the CD4033BD with the capacitance and dielectric requirements specified by the manufacturer datasheet. Route the return current through the same quiet ground region and avoid sharing narrow return paths with display or relay drivers. The verified data does not provide quiescent current, input-current, or output-drive limits, so those values must be obtained before sizing the supply and pull-up or load network.
Place the counter on the logic side of the board rather than beside high-energy switching circuitry. Maintain a clear ground reference beneath the DIP footprint, keep clock and reset traces short, and separate display or relay load current from the counter’s supply pins. The 16-CDIP package is easy to prototype and service, but its through-hole leads do not eliminate the need for careful decoupling and signal routing.
Informações de conformidade
The supplied verified data identifies a military temperature grade but does not provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. These attributes remain unknown until confirmed with the manufacturer.
