CD4536BK - CMOS Programmable Timer | Texas Instruments
料号： CD4536BK ✓ 量产中CD4536BK 概述
A programmable timer is a clock-and-timing IC that combines an internal binary counter with oscillator and output-selection circuitry. Within the broader hierarchy of timer IC, digital logic IC, clock and timing IC, and semiconductor categories, it provides a flexible way to divide an input frequency or generate a selectable time interval. Instead of requiring a fixed counter size, the CD4536B family can bypass eight stages and select among 16 remaining tap positions.
Key features include standardized symmetrical output characteristics, 24 ripple-binary counting stages, external-clock capability, and an on-chip RC-oscillator arrangement. The manufacturer also tests quiescent current at 20 V and specifies parametric ratings at 5 V, 10 V, and 15 V. These characteristics make the timer useful when an adjustable time base is more valuable than a fixed-frequency divider.
Technically, the CD4536B operates as a ripple-binary counter with programmable output selection. Its first eight stages may be bypassed, leaving 16 stages that can be addressed by a 4-bit code. An external clock can drive the counter directly, while resistor-capacitor timing components can establish an on-chip RC oscillation. This architecture supports one-shot, repetitive timing, delayed-event, clock-divider, and programmable-delay implementations without requiring a microcontroller for basic timing tasks.
Typical applications include industrial pulse and delay generation, laboratory pulse generators, timer modules, event sequencing, periodic control loops, and low-speed clock division. The device is particularly suitable where a fixed CMOS logic implementation is preferable to firmware-based timing, provided the design accounts for oscillator tolerance and propagation-delay variation.
Designers should treat the CD4536B family as a versatile but discrete-function timer rather than a precision real-time clock. Keep the RC timing network close to the device, validate the selected output stage against the required interval, and confirm counter timing at the voltage and temperature extremes of the intended equipment. The 16-lead package also requires attention to lead pitch and footprint compatibility during replacement planning.
This product record combines the functional architecture of the CD4536B family, package information, JEDEC qualification context, and practical timer-design guidance. It also distinguishes verified drop-in replacements from related counter ICs whose internal architecture or pin assignments make them unsuitable as direct PCB replacements.
直接替换替代料： CD4536BK ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料CD4536BK 规格参数
| Device Type | CMOS programmable timer |
| Counter Architecture | 24 ripple-binary counter stages |
| Maximum Count | 16,777,216 counts (2^24) |
| Minimum Count | 1 count |
| Bypassable Stages | 8 counter stages |
| Selectable Output Stages | 16 remaining counter stages |
| Output Selection Code | 4-bit code |
| Clock Sources | External clock or on-chip RC oscillator |
| Logic Family | CMOS |
| Quiescent Current Test Voltage | 20 V |
| Parametric Test Voltages | 5 V, 10 V, and 15 V |
| Output Characteristics | Standardized symmetrical outputs |
| JEDEC Qualification | JEDEC Tentative Standard No. 13B for B-series CMOS devices |
| 封装 | CDFP-16 |
| Lead Count | 16 leads |
CD4536BK cdfp-16 引脚配置指南
CD4536BK（cdfp-16 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： CD4536BK.
请参阅 数据手册 以查看完整引脚配置。
典型应用
CD4536BK 适用于 6 应用s: Programmable Industrial Pulse Generator, Adjustable One-Shot and Delay Circuit, Laboratory Pulse and Timing Source, Low-Speed Clock Divider, Recurring Control and Alarm Timing, Legacy Test and Measurement Timing Module.
Programmable Industrial Pulse Generator
The CD4536BK suits industrial pulse-generation circuits because its 24 ripple-binary stages can produce multiple timing intervals from one clock source. Bypassing eight stages and selecting one of the remaining 16 outputs with a 4-bit code allows the same counter to serve several pulse-width requirements. An external clock can provide system coherence, while the RC-oscillator option supports an autonomous timing module. The implementation should validate pulse accuracy across supply-voltage and temperature extremes, particularly when RC component tolerance dominates the timing error.
推荐
Adjustable One-Shot and Delay Circuit
The CD4536BK can implement delayed trigger, retriggerable one-shot, and event-delay functions using its selectable counter taps. The designer selects one of 16 available stages to establish the required delay relationship while retaining flexibility in the oscillator or clock arrangement. This makes the timer useful in legacy control, test, and industrial automation equipment where a microcontroller would add unnecessary complexity. Validate reset recovery, minimum trigger pulse width, and output jitter before using it in safety-critical timing paths.
推荐
Laboratory Pulse and Timing Source
The CD4536BK provides a straightforward discrete CMOS timer for laboratory pulse generators, trigger-delay modules, and repetitive-event sources. Its external-clock input permits connection to a precision source, while its internal RC arrangement supports low-cost stand-alone operation. The 24-stage counter and programmable tap selection offer multiple interval choices without changing the main timing network. For bench instruments, check output symmetry and edge timing at every selected division ratio and use external triggering when repeatable phase alignment is required.
推荐
Low-Speed Clock Divider
The CD4536BK can divide an external clock into slower timing pulses by selecting an appropriate counter output. Its programmable selection is useful where several slow system events must derive from one reference, and the bypassable stages allow a shorter usable count range. Use the CMOS output to drive compatible loads or buffer it when driving high fanout. Engineers should evaluate ripple-counter propagation delay, which can matter when multiple outputs must change at precisely defined moments.
推荐
Recurring Control and Alarm Timing
The CD4536BK is useful for recurring control intervals in machinery, panel systems, and legacy instrumentation. Its RC oscillator can create a repetitive base timing signal, while a selected counter tap supplies the delay needed before an output event. Compared with a software timer, this hardware approach continues operating without a microcontroller and can provide a simple deterministic control output. Design the reset path carefully so power-up, alarm-clearing, and manual reset states have defined behavior.
推荐
Legacy Test and Measurement Timing Module
The CD4536BK can support trigger-delay, pulse-stretch, and repetitive timing functions in legacy test and measurement equipment. Driving it from an external master clock improves repeatability and synchronizes it with the instrument under test, while the selectable outputs reduce the number of separate timing circuits required. The device's standardized symmetric output characteristics support consistent pulse generation across supported operating conditions. Confirm output rise and fall behavior at the intended load and avoid assuming modern microcontroller-style timing accuracy.
推荐
推荐产品汇总
工程参考数据： CD4536BK ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | CD4536B | CD4060BK | CD4020BK |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Device Category | CMOS programmable timer | CMOS programmable timer | CMOS oscillator-divider counter | CMOS binary counter |
关键差异点
- Programmable timing selection within one timer （对比 CD4020BK)
- Flexible clock-source options （对比 CD4060BK)
- Wide programmable count range （对比 CD4536B)
设计说明
Do not treat the CD4536B generic family name as proof that every ordering option is pin-compatible with CD4536BK. Check the package drawing, lead count, lead spacing, pin-description table, operating temperature range, and qualification requirements for the exact suffix. Related parts such as CD4060BK and CD4020BK have different counter and timer architectures and must not be substituted solely because they use CMOS logic.
When using the RC oscillator, place the timing resistor and capacitor close to the associated device pins and keep the timing node away from high-current switching paths. Minimize parasitic capacitance on the timing node because it changes the effective capacitance and therefore the delay. Provide a low-impedance ground return and use a stable supply reference so oscillator behavior remains predictable across the PCB.
Treat the CD4536BK as a ripple-counter device and account for cumulative propagation delay when multiple counter outputs are observed simultaneously. The required settling interval can increase with the selected division ratio and operating frequency. Use the manufacturer timing diagrams to define setup and hold requirements, and add external buffering when a counter output drives a heavily loaded node.
Decide whether the design will use the external-clock or RC-oscillator path before laying out the board. The external-clock approach can improve timing repeatability and system synchronization, while the RC approach simplifies the circuit but introduces component tolerance and temperature sensitivity. Confirm that the selected clock signal meets the CMOS input requirements and that unused oscillator pins are configured according to the manufacturer guidance.
合规信息
The manufacturer family meets JEDEC Tentative Standard No. 13B for B-series CMOS devices. Specific RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations for the exact CD4536BK ordering suffix were not established.
