CD4059AF - Programmable Counter/Divider | Intersil
N.º de pieza: CD4059AF ✗ Fin de vidaCD4059AF Descripción general
A counter/frequency divider is a sequential logic device that counts input events and produces a corresponding divided or periodic output. It belongs to the broader CMOS logic hierarchy, where counters sit alongside gates, latches, multiplexers, shift registers, and arithmetic circuits. In frequency-processing systems, this function supports clock division, waveform shaping, periodic pulse generation, timing reference creation, and event-rate reduction.
The CD4059AF is associated with a family that includes the CD4059AD, CD4059AD3, and CD4059AE identifiers. The architecture is intended for programmable divide-by-N operation rather than a fixed division ratio. This distinction is important because the external count-setting arrangement determines how the input clock is translated into the divided output and how the device integrates into a larger timing or sequencing system.
The CD4059AF is identified as a microcircuit operating with binary states commonly represented as on and off, true and false, high and low, or 1 and 0. This binary-state foundation is characteristic of CMOS logic and allows the counter output to interface with other digital logic stages. Designers should treat signal thresholds, setup and hold timing, clock-edge behavior, and reset requirements as the principal implementation constraints when validating a new board.
Typical uses include programmable clock division in test and measurement equipment, repetitive event counting in industrial control, low-frequency timing generation in communication equipment, and output-rate reduction in digital signal-processing systems. The device can also be used where a stable periodic reference is needed alongside a separately generated divide ratio. Board-level implementation must preserve the required logic levels and timing margins.
When designing a new circuit, begin with the manufacturer pin-description table and timing information before assigning PCB tracks. Confirm the exact CD4059AF pinout, package details, voltage limits, operating-temperature range, count range, and reset behavior against the current manufacturer documentation. Also review output-drive and loading conditions so the divider operates reliably with the selected downstream logic family.
This product page combines the CD4059AF functional description, sourcing guidance, application context, and replacement considerations. It also emphasizes practical boundary conditions that matter when adapting a legacy counter/frequency divider: exact pin compatibility, logic compatibility, operating limits, and timing behavior must all be confirmed before an alternative is treated as a drop-in replacement.
Alternativas directas para CD4059AF — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
No hay alternativas directas disponibles para este producto.
Solicitar alternativasCD4059AF Valores máximos y características eléctricas
| Product Type | Counter/frequency divider |
| Logic Family | CMOS |
| Counter Function | Programmable divide-by-N counter |
| Number of Binary States | 2 states |
Guía de configuración de pines de CD4059AF standard
Configuración de pines para CD4059AF (encapsulado standard). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para CD4059AF.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
CD4059AF es adecuado para 6 aplicacións: Programmable Clock Division, Periodic Timing Reference, Industrial Event Counting, Communication Timing, Test and Measurement Pacing, Digital Signal Rate Reduction.
Programmable Clock Division
The CD4059AF is suitable for producing a divided clock when a system needs one input timing reference and a selectable divide-by-N output. One CD4059A counter occupies the central timing function while surrounding logic enables the divided signal for a downstream circuit. Designers should select the count configuration, verify the maximum input frequency, and check propagation delay against the resulting output period.
Periodic Timing Reference
A single CD4059AF counter can help generate a periodic timing reference by counting recurring input events and producing a divided output. This arrangement is useful when a subsystem needs a lower-rate coordination signal derived from a faster master clock. The design should account for reset behavior, clock-edge requirements, output loading, and the delay introduced by the counter when sequencing multiple circuit blocks.
Industrial Event Counting
The CD4059AF can be used in industrial control equipment to count recurring events and reduce their rate before they reach a controller or display path. The 2-state digital operating principle supports conventional binary logic interfacing, while the programmable divide function allows several event rates to share a common input. Protection, isolation, and signal conditioning should be handled by the surrounding front end.
Communication Timing
In communication equipment, the CD4059AF can divide a periodic clock or event stream when a lower-rate internal reference is required. The programmable divide-by-N architecture avoids committing the PCB to a single fixed division ratio. Clock jitter, maximum operating frequency, logic thresholds, and output-drive capability must be evaluated together to preserve timing margins across the communications subsystem.
Test and Measurement Pacing
The CD4059AF can pace repeated test actions or measurement updates by dividing a higher-frequency source into a slower control cadence. One counter provides the divide function while the instrument control logic determines when each measurement or stimulus event is enabled. The timing path should be validated with the instrument’s clock architecture, especially where deterministic latency or synchronized acquisition is important.
Digital Signal Rate Reduction
The CD4059AF is applicable when a digital signal-processing chain must reduce an event or clock rate before downstream computation. The divide-by-N function can lower the operating rate presented to a counter, memory, or control register. Confirm that the selected count range covers the required division ratio and that the resulting output remains within the downstream device’s timing and logic-level requirements.
Datos de referencia de ingeniería para CD4059AF — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto |
|---|---|
| Product Type | Counter/frequency divider |
| Logic Technology | CMOS |
| Counter Function | Programmable divide-by-N counter |
| Signal States | 2 binary states |
| Brand | Intersil |
Diferenciadores clave
- Programmable divide-by-N operation (frente a CD4059AD3)
- Exact AF-grade sourcing identity (frente a CD4059AD)
- CMOS binary-state implementation (frente a CD74HC4059)
Notas de diseño
Do not treat every CD4059A suffix as automatically interchangeable. The CD4059AD, CD4059AD3, CD4059AE, and CD4059AF identifiers appear in related military and commercial ordering records, but the ordering suffix can identify differences in package, temperature grade, or qualification. Compare the exact manufacturer ordering table before approving a substitution, and confirm pin assignments, supply limits, count range, and timing.
Use the manufacturer pin-description table when assigning PCB tracks and preserve the physical orientation defined for the exact package. Keep the clock path short, avoid routing it beside fast switching nodes, and place any required bypass capacitors close to their designated power pins. Confirm whether the package includes an exposed pad before defining the footprint and thermal copper pattern.
The divided output inherits the input clock’s jitter, while counter propagation delay and output transition time add to the timing uncertainty at the divider output. In a design where the output triggers another timing block, include the counter delay and loading in the timing budget. Use the manufacturer timing diagrams to establish setup, hold, reset, and maximum operating-frequency constraints.
Información de cumplimiento
The CD4059AF is associated with a legacy CD4059A logic-counter family. Exact RoHS, REACH, lead-free, halogen-free, and conflict-minerals status must be confirmed for the AF ordering code.
