CD4541BE - 100 kHz Programmable Timer | Texas Instruments
N.º de pieza: CD4541BE ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $0.0857 | $0,09 |
| 10 | $0.0857 | $0,86 |
| 100 | $0.0857 | $8,57 |
| 500 | $0.0857 | $42,85 |
| 1.000 | $0.0857 | $85,70 |
CD4541BE Descripción general
A programmable timer is a timing IC that generates or measures intervals using digital counters and, often, an external resistor-capacitor network. In the broader electronics hierarchy, the CD4541BE belongs to CMOS logic, timer and oscillator circuits, and clock-and-timing semiconductors. Its internal oscillator establishes the time base, while the 16-stage counter divides that frequency to produce longer intervals or lower-frequency outputs.
The MODE input, located at pin 10, provides selectable operating modes. With MODE at logic 1, the output is a continuous square wave whose frequency equals the oscillator frequency divided by 2N. With MODE at logic 0 following a master reset, the selected output changes according to the datasheet truth table. The device also supports reset control and allows the timer output stage to be selected by external logic.
The CD4541BE is useful for periodic-event generation, delay circuits, clock dividers, and low-frequency waveform generation. Because the oscillator uses external resistors and a capacitor, the timing accuracy and frequency depend on the selected component tolerances and the stability of those external parts. Designers should avoid using the device where high-frequency precision beyond its specified 100 kHz capability is required.
Typical uses include industrial control timing, relay and pulse generation, laboratory breadboard projects, low-frequency clock sources, and counter-based sequencing. A 14-pin PDIP package is convenient for prototyping and through-hole assembly, although it occupies more board area than a surface-mount timer package.
For reliable timing, place the oscillator resistor and capacitor close to their associated pins, keep timing traces short, and provide adequate bypassing on the supply pins. Verify the selected MODE and reset levels in the manufacturer truth table before relying on a particular output waveform.
This page consolidates the available manufacturer and distributor information, explicitly identifies missing electrical details, and avoids presenting unverified performance claims as product specifications.
Alternativas directas para CD4541BE — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con CD4541BE (mismo factor de forma y huella) — difiere en Package.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
CD4541BMT
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
CD4541BF3A
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MC14541BCPG
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
CD4541BE Especificaciones
| Product Type | CMOS programmable timer |
| Maximum Oscillator Frequency | 100 kHz |
| Supply Voltage Rating | 20 V high-voltage rating |
| Counter Stages | 16 stages |
| Oscillator Timing Components | 2 resistors and 1 capacitor |
| Power-On Reset | Automatic power-on reset |
| MODE Input | Pin 10; logic 1 for continuous square-wave mode and logic 0 for reset-dependent output mode |
| Output Frequency | Oscillator frequency divided by 2N |
| Encapsulado | 14-pin PDIP |
| Tipo de montaje | Through-hole |
| Logic Family | CMOS |
| Master Reset | Supported |
| Output Control Logic | Programmable output selection |
| Supply Voltage Maximum | 20 V rating |
Guía de configuración de pines de CD4541BE 14-pin pdip
Configuración de pines para CD4541BE (encapsulado 14-pin pdip). La numeración de pines, las funciones y los diagramas de conexión se definen en la hoja de datos del fabricante. Consúltela para conocer el footprint exacto y las directrices de soldadura.
No hay datos detallados de patillaje disponibles para CD4541BE.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
CD4541BE es adecuado para 6 aplicacións: Periodic Clock Generation, Pulse and Delay Generation, Industrial Event Sequencing, Laboratory Function Generator, Countdown and Repetitive Trigger Circuits, Low-Frequency Embedded Control.
Periodic Clock Generation
The CD4541BE fits low-frequency periodic clock generation because its external two-resistor, one-capacitor network establishes the oscillator time base and the 16-stage counter extends the available timing range. In continuous square-wave mode, MODE pin 10 at logic 1 divides the oscillator frequency according to the selected counter stage. This approach is useful for clocking a small control system, cycling a display state, or producing a repeatable service pulse without a microcontroller. The engineering tradeoff is that timing accuracy depends on the external resistor and capacitor tolerances, so stable components and short PCB traces are important.
Recomendado
Pulse and Delay Generation
Use the CD4541BE when a simple hardware pulse train or delayed transition is required. Its oscillator, 16-stage counter, reset input, and selectable output logic allow the timing period to be extended without using a processor timing loop. The MODE input determines whether the selected output operates as a continuous divided square wave or follows the reset-dependent sequence described in the manufacturer truth table. Because the verified data does not specify exact timing tolerances, calculate the oscillator values from the datasheet and validate them across temperature and supply variation before using the circuit for safety-critical timing.
Recomendado
Industrial Event Sequencing
The CD4541BE can support simple industrial event sequencing where a periodic output drives a relay, counter, indicator, or actuator interface. Its 20 V high-voltage rating and CMOS timer architecture are relevant to control-oriented circuits, although the exact input protection and output-drive limits must come from the complete manufacturer datasheet. Keep the timer IC separate from inductive loads and use suitable driver transistors, flyback protection, and isolation where required. The device is better suited to low-frequency deterministic sequencing than to high-rate communication or precision real-time measurement.
Recomendado
Laboratory Function Generator
The CD4541BE is useful in a low-frequency laboratory clock or square-wave generator built around external timing components. MODE pin 10 can select continuous square-wave operation, while the counter stages reduce the oscillator frequency by powers of two according to the manufacturer description. This makes it convenient for educational breadboard circuits, slow trigger sources, and basic timing demonstrations. For laboratory work, measure the actual output frequency because tolerance, temperature drift, and supply conditions will influence the result; do not interpret the 100 kHz listing as a guaranteed precision frequency reference.
Recomendado
Countdown and Repetitive Trigger Circuits
The 16-stage binary counter and programmable output logic make the CD4541BE appropriate for repetitive trigger or countdown-style circuits. After a master reset, the selected output follows the mode-dependent sequence defined in the truth table, allowing external logic to detect a terminal count or periodic interval. This can simplify older control boards that need a hardware timer rather than firmware timing. Use a suitable output driver if the load requires more current than the verified data specifies, and preserve the reset polarity and timing margins shown in the manufacturer documentation.
Recomendado
Low-Frequency Embedded Control
A CD4541BE can provide an independent low-frequency timing reference beside a microcontroller or discrete control logic. Its standalone oscillator and counter do not depend on firmware execution, making the part useful for watchdog-like cadence, display multiplexing, or periodic maintenance requests in a larger embedded system. The 14-pin PDIP footprint is advantageous for prototypes and repairable through-hole assemblies, though it consumes more board area than a surface-mount timer. Verify supply-voltage compatibility, input levels, and output-drive requirements against the target controller and protection circuitry.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para CD4541BE — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | CD4541BMT | CD4541BF3A | MC14541BCPG |
|---|---|---|---|---|
| Package | 14-pin PDIP | 14-pin PDIP candidate; verify exact ordering variant | 14-pin PDIP candidate; verify exact ordering variant | 14-pin PDIP candidate; verify manufacturer data |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | onsemi |
| Function | CMOS programmable timer | CD4541B-family timer candidate | CD4541B-family timer candidate | Programmable timer candidate |
Diferenciadores clave
- Standalone hardware timing (frente a ATMEGA328-AU)
- Through-hole prototyping convenience (frente a MC14541BCPG)
- Programmable output behavior (frente a CD4541BMT)
Notas de diseño
Place the two oscillator resistors and the timing capacitor close to the associated CD4541BE pins, and route the timing network as a compact analog subcircuit. Keep oscillator traces away from switching-regulator outputs, relay-driver nodes, and long high-current paths. If the timing capacitor is sensitive, use a short ground return and follow the manufacturer layout guidance for the selected package.
Do not treat the 100 kHz listing as a complete timing-accuracy specification. The external resistor and capacitor tolerances, temperature coefficient, supply variation, and counter configuration all affect the resulting period. Verify the calculated oscillator frequency on the assembled board and use the MODE pin and master-reset truth table from the Texas Instruments datasheet before designing the external logic.
Confirm the supply voltage and input/output limits against the complete manufacturer datasheet before connecting the timer to a 20 V-rated control circuit. The verified results establish a 20 V high-voltage type designation, but they do not provide the complete operating-current, output-drive, or absolute-maximum table. Add suitable protection and decoupling based on those verified limits rather than inferring them from the package name.
The 14-pin PDIP format is easy to prototype but occupies substantial board area. Keep the oscillator components away from long reset traces and noisy control outputs, and provide a local supply bypass path. When upgrading a design to a surface-mount package, treat the change as a footprint migration and verify pin numbering, orientation, and timing-node placement rather than assuming a direct replacement.
Información de cumplimiento
The supplied verified data identifies a Texas Instruments CMOS timer and a 20 V high-voltage rating but does not provide RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification statements.
