CD4063BK - 4-Bit Magnitude Comparator | Texas Instruments
N.º da peça: CD4063BK ✓ AtivoCD4063BK Visão geral
A magnitude comparator is a combinational logic circuit within the broader hierarchy of CMOS logic ICs, digital logic, and integrated circuits. It evaluates the numerical relationship between two unsigned operand groups without performing subtraction. This makes the CD4063BK useful when a digital system must make an immediate decision, select a value, sort records, determine equality, or control a downstream branch according to the relative magnitude of two data words.
The verified manufacturer information identifies the CD4063B as a 4-bit magnitude comparator intended for computer and logic applications. Its eight comparing inputs represent two complete 4-bit words, while the A<B, A=B, and A>B outputs provide explicit relationship results. Three cascading inputs extend the architecture beyond four bits when larger comparisons are required. Exact propagation-delay, supply-voltage, output-current, and temperature limits were not included in the supplied source excerpts and therefore are not inferred here.
Operationally, the comparator evaluates the most significant unequal bit first, using cascaded equality information to support wider comparisons. A design should treat the equality and cascade signals as part of the decision path and preserve their logic levels during unused-input conditions. The available official product page confirms the functional architecture, while the supplied distributor records identify CD4063BK as an active, stocked logic-comparator offering.
Typical applications include digital control systems, sorting and selection logic, address and threshold comparisons, arithmetic-system status checks, industrial control logic, and embedded equipment where two binary or BCD values must be evaluated. Cascading capability is particularly useful when the system needs a comparison wider than four bits or when several independently generated results must be combined.
Designers should confirm the manufacturer pinout, supply limits, timing characteristics, and unused-input rules against the official CD4063B documentation before layout release. Because this page synthesizes the verified functional description, source links, lifecycle information, and replacement guidance, it provides practical context beyond the distributor listing while clearly identifying parameters that still require datasheet confirmation.
Alternativas drop-in para CD4063BK — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com CD4063BK (mesmo formato e footprint) — diferindo em Package, Logic Family, Mounting Type, Cascading Inputs.
CD4063BM
✅ Drop-In ⚠️ Especificações não verificadasConsulte o preço
Ver ficha técnica →CD4063BK-T
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
CD4063B
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
CD4063BE
✅ Drop-InConsulte o preço
Ver ficha técnica →CD4063BK Classificações máximas e características elétricas
| Product Type | CMOS 4-bit magnitude comparator |
| Number of Comparison Inputs | 8 inputs |
| Comparison Input Groups | A3–A0 and B3–B0 |
| Comparison Width | 4 bits |
| Logic Outputs | 3 outputs |
| Output Functions | A<B, A=B, and A>B |
| Cascading Inputs | 3 inputs |
| Supported Numeric Formats | Binary or BCD |
| Logic Family | CMOS |
| Product Classification | Combinational logic comparator |
| Tipo de montagem | Surface mount |
| Encapsulamento | 16-pin plastic package, K suffix |
Guia de Configuração de Pinos do CD4063BK 16-pin plastic package, k suffix
Configuração de pinos para CD4063BK (pacote 16-pin plastic package, k suffix). Este componente analógico possui pinos de entrada, saída e alimentação. Consulte o datasheet do fabricante para configurações de offset null, compensação e pino de enable. Ideal para circuitos de condicionamento de sinal e amplificadores.
Nenhum dado detalhado de pinagem disponível para CD4063BK.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
CD4063BK é adequado para 6 aplicaçãos: Digital Threshold Control, Sorting and Selection Logic, Address Range Detection, Wider Cascaded Numeric Comparison, BCD Instrument Data Handling, Embedded Equipment Sequencing.
Digital Threshold Control
The CD4063BK suits digital threshold control because it evaluates two complete 4-bit words and reports less-than, equal-to, and greater-than relationships simultaneously. Place the source values on A3–A0 and B3–B0, then use the three comparison outputs to trigger threshold, match, and over-limit actions. This avoids implementing a subtractor and comparator from multiple gates. The supplied manufacturer information confirms the 4-bit binary or BCD operating modes, while exact propagation delay and supply limits must be confirmed from the complete Texas Instruments CD4063B datasheet before setting a critical control-loop timing budget.
Recomendado
Sorting and Selection Logic
The CD4063BK provides a compact decision element for sorting and selection systems that compare two 4-bit identifiers, status codes, or priority values. Its A<B and A>B outputs can direct datapath multiplexers, while A=B can indicate that a matching value has been found. Because the device accepts binary or BCD words, it can support both encoded numeric control data and decimal-oriented instrument interfaces. The verified 8-input, 3-output architecture reduces gate count, although downstream datapath timing must be checked against the manufacturer timing data.
Recomendado
Address Range Detection
The CD4063BK is useful for detecting whether a 4-bit address or register index lies below, above, or at a specified boundary. A fixed threshold word can be applied to one input group while a changing address is applied to the other; the relationship outputs then enable range-qualified routing or memory access control. Its dedicated equality output can also qualify exact-address matches. The part is particularly appropriate for small control processors and legacy CMOS systems where a dedicated comparator is more economical than implementing the function in software or combinational gates.
Recomendado
Wider Cascaded Numeric Comparison
The three cascading inputs allow CD4063BK sections to be combined when a system must compare more than four bits. Lower-order sections establish whether their operand sections are equal, while a higher-order section resolves the overall less-than or greater-than relationship. This arrangement supports wider magnitude comparison without duplicating an entire 8-bit or 12-bit comparator. The verified Texas Instruments description confirms the cascading architecture, but the exact connection method, valid logic levels, and timing budget must be taken directly from the manufacturer datasheet before implementing a cascade chain.
Recomendado
BCD Instrument Data Handling
The CD4063BK can compare BCD-coded values in decimal displays, counters, keypads, and legacy measurement equipment. Eight inputs permit a changing BCD digit or multibit decimal field to be compared with a programmed threshold, while A=B can identify an exact keypad or instrument code. Its separate A<B and A>B outputs simplify decimal menu navigation and limit alarm handling. The manufacturer expressly identifies binary and BCD use, but system designers should validate BCD input validity and ensure that invalid encodings do not produce unintended comparisons.
Recomendado
Embedded Equipment Sequencing
In embedded equipment, the CD4063BK can compare configuration values and generate deterministic sequencing signals without occupying a microcontroller I/O pin. For example, it can detect when a 4-bit mode code equals a permitted value or when a step counter reaches a programmed limit. The equal, less-than, and greater-than outputs can then enable converters, indicators, or relays. This hardware comparison is deterministic and independent of firmware execution time, making it useful in legacy control panels, industrial sequencers, and systems where a small dedicated logic function improves separation between control decisions and software.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para CD4063BK — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | CD4063BM | CD4063BK-T | CD4063B | CD4063BE |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Function | 4-bit magnitude comparator | 4-bit magnitude comparator | 4-bit magnitude comparator | 4-bit magnitude comparator | 4-bit magnitude comparator |
| Comparison Inputs | 8 inputs | 8 inputs | 8 inputs | 8 inputs | 8 inputs |
| Comparison Outputs | A<B, A=B, and A>B | A<B, A=B, and A>B | A<B, A=B, and A>B | A<B, A=B, and A>B | A<B, A=B, and A>B |
| Cascading Inputs | 3 inputs | 3 inputs | 3 inputs | 3 inputs | 3 inputs |
| Supported Number Formats | Binary or BCD | Binary or BCD | Binary or BCD | Binary or BCD | Binary or BCD |
| Logic Family | CMOS | CMOS | CMOS | CMOS | CMOS |
Principais diferenciais
- Dedicated relationship outputs (vs CD4585BE)
- Built-in width extension (vs CD4063BE)
- Surface-mount ordering option (vs CD4063BE)
Notas de projeto
Do not substitute CD4063BE for CD4063BK solely because both are 4-bit comparators. The E ordering code is normally associated with a through-hole DIP-16 package, whereas the K suffix denotes the surface-mount package. Verify the manufacturer's ordering table, dimensional drawing, and numbered pin diagram against the PCB footprint. Also confirm supply voltage, propagation delay, output-current capability, and temperature grade before treating any related ordering code as a drop-in production replacement.
Keep the comparator inputs and cascading connections away from long parallel traces that could couple switching noise into decision paths. Route the A3–A0 and B3–B0 groups consistently, use a solid ground reference, and place any required bypass capacitor close to the supply and ground pins according to the manufacturer layout guidance. The supplied excerpts do not specify a recommended capacitor value, so capacitor selection must follow the complete manufacturer datasheet and the actual switching environment.
Treat A<B, A=B, and A>B as potentially changing at different times relative to the input words. In control logic, consider whether downstream state elements can produce unintended responses during input transitions. Establish a valid-data window, synchronize asynchronous operands where required, and include an appropriate hold interval in the timing budget. The verified source does not provide propagation-delay figures, so they must be obtained from the official CD4063B timing data rather than estimated.
Design the comparator within the manufacturer's absolute maximum and recommended supply conditions, including input levels that must remain valid during supply ramp-up. Do not assume that every legacy CD4000-series device supports the same voltage range. Confirm input thresholds and output drive at the actual supply voltage used by the board, especially when driving longer traces, cables, or mixed CMOS families. Add local supply decoupling and maintain a low-impedance return path.
Informações de conformidade
The supplied official-page and distributor excerpts do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than being inferred.
