CD4536BPW - 5MHz CMOS Programmable Timer | Texas Instruments
MPN: CD4536BPW ✓ نشطCD4536BPW نظرة عامة
A programmable timer is a clock-and-timing IC that combines an internal oscillator, counter, decoding logic, and output circuitry to create timing events without requiring a microcontroller. In the broader semiconductor hierarchy, the CD4536BPW belongs to the CMOS timer family, the clock-and-timing IC category, and ultimately the integrated-circuit and semiconductor markets. It extends simple fixed-delay or fixed-frequency circuits by allowing the counter range and output selection to be changed with digital control signals.
Key features include a 24-stage ripple-binary counter, selectable bypass of the first eight stages, four BCD inputs labeled A, B, C, and D, and selectable decoded outputs. A logic-high signal on the 8-BYPASS input makes stage 9 the first stage of the remaining 16-stage counter. The MONO IN input supports the on-chip monostable oscillator, while the device also offers programmable timer operation for longer timing intervals.
The counter-based architecture is useful because the timing interval can be derived from the oscillator frequency and the selected count. When the eight bypassed stages are used, the decoder can select one of 16 outputs. This provides more flexibility than a simple fixed monostable pulse circuit and allows a system designer to choose among several timing taps. The Texas Instruments CD4536B datasheet also states that the B-series device provides standardized, symmetrical output characteristics and is 100% tested for quiescent current at 20 V.
Typical uses include industrial pulse and delay generation, periodic event sequencing, laboratory timing circuits, counter interfaces, clock dividers, and embedded control systems where an external microcontroller does not need to manage every timed interval. A complementary counter or multiplexer can be useful when the selected timer output must be routed, counted, or isolated from other timing domains.
Designers should account for the external resistor and capacitor network connected to the oscillator, verify propagation-delay behavior at the selected counter stage, and ensure that reset and output states remain defined during startup. Decoupling capacitors should be placed close to the supply and ground pins, while unused inputs must be connected to a defined logic level rather than left floating.
This page consolidates the manufacturer timer architecture, verified package information, pinout guidance, application examples, and practical replacement considerations into a design-focused reference. It also distinguishes true same-footprint replacements from functionally related timer and counter ICs that require different packages or different internal architectures.
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اطلب بدائلCD4536BPW المواصفات
| Product Type | CMOS programmable timer and counter |
| Maximum Operating Frequency | 5 MHz |
| Counter Stages | 24 ripple-binary stages |
| Programmable Count Range | 1 to 2^24 counts |
| Bypass Architecture | First 8 stages bypassable |
| Decoded Output Selection | 16 outputs selected by A, B, C, and D inputs |
| Monostable Timing Input | MONO IN |
| Logic Technology | CMOS |
| العلبة | 16-pin TSSOP, 4.40 mm width |
| نوع التركيب | Surface mount |
| Quiescent Current Test Voltage | 20 V |
| Quiescent Current Test Condition | 100% tested |
| Output Characteristics | Standardized and symmetrical |
| JEDEC Qualification | Meets JEDEC Tentative Standard No. 13B for B-series CMOS devices |
دليل تكوين أطراف CD4536BPW 16-pin tssop, 4.40 mm width
تكوين الأطراف لـ CD4536BPW (حزمة 16-pin tssop, 4.40 mm width). يتم تعريف ترقيم الأطراف والوظائف ومخططات التوصيل في ورقة البيانات الفنية من الشركة المصنعة. راجعها للحصول على البصمة الدقيقة وإرشادات اللحام.
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التطبيقات النموذجية
CD4536BPW مناسب لـ 6 التطبيقs: Industrial Pulse and Delay Generation, Programmable Timing Sequence Generator, Laboratory Timer and Pulse-Source Circuit, Embedded Counter Interface, Clock Divider and Frequency-Selection Circuit, Monostable and Delayed-Trigger Circuit.
Industrial Pulse and Delay Generation
The CD4536BPW fits industrial control circuits that require repeatable pulse, delay, or periodic-event generation without dedicating a microcontroller timer. Its 24 ripple-binary stages allow counting from 1 through 2^24, while bypassing the first eight stages provides a shorter selectable count sequence. The A, B, C, and D inputs select among 16 decoded outputs, allowing several timing intervals to be derived from one oscillator and counter. According to the Texas Instruments CD4536B datasheet, standardized and symmetrical output characteristics support dependable interfacing with CMOS logic. Design the external oscillator for the longest required interval and verify propagation-delay accumulation, startup behavior, supply range, and temperature limits before production release.
موصى به
Programmable Timing Sequence Generator
The CD4536BPW is appropriate when a system requires multiple selectable timing points rather than one fixed output pulse. Its 16 decoded outputs are selected through the A, B, C, and D BCD inputs, allowing external control logic to choose a timing tap without changing the oscillator components. The first eight counter stages can also be bypassed to alter the available count range. According to the Texas Instruments CD4536B datasheet, this architecture makes the device useful in programmable sequence and event-timing circuits. Validate decoded output transitions at the selected voltage and temperature, and use pull-down or pull-up resistors where a control input could float during reset or power-up.
موصى به
Laboratory Timer and Pulse-Source Circuit
The CD4536BPW can form the basis of a laboratory timer, delayed pulse source, or selectable clock-divider circuit. The oscillator frequency sets the time base, while the 24 counter stages expand that base into a long programmable interval. Four BCD selection inputs make the decoded output suitable for experiments involving different delay taps. The CMOS implementation also allows the timer to share a supply rail with compatible logic. According to the Texas Instruments CD4536B datasheet, MONO IN provides a timing input for the on-chip monostable oscillator; grounding it through a resistor of 10 kΩ or higher disables the one-shot function when that mode is not required.
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Embedded Counter Interface
The CD4536BPW can provide a long programmable count and an interface between a periodic oscillator and downstream event logic. The 24-stage ripple counter supports counting intervals up to 2^24, and the decoded outputs allow a system controller to observe or select an intermediate count. This arrangement is useful in teaching systems, embedded sequencers, and legacy automation equipment where a dedicated timer output is simpler than adding another microcontroller channel. According to the Texas Instruments CD4536B datasheet, the counter architecture can either use all 24 stages or bypass eight stages. Check reset behavior and account for accumulated propagation delay because ripple-counter transitions propagate from one stage to the next.
موصى به
Clock Divider and Frequency-Selection Circuit
The CD4536BPW is useful for dividing an oscillator into selectable lower-frequency events. Rather than requiring a separate divider for each output rate, the 16 decoded counter outputs can provide multiple timing taps, while the bypass input changes the effective count range. According to the Texas Instruments CD4536B datasheet, the device is a CMOS programmable timer with 5 MHz, 10 V, and 15 V parametric ratings. The selected output should be treated as a digital waveform with finite rise and fall times, so downstream timing margins must include those transitions and any counter-stage propagation delay.
موصى به
Monostable and Delayed-Trigger Circuit
The CD4536BPW supports timing designs using the MONO IN input and the on-chip monostable oscillator. According to the Texas Instruments CD4536B datasheet, MONO IN is the timing input for the monostable function, and grounding the terminal through a resistor of 10 kΩ or higher disables the one-shot behavior. This allows the same device family to support retriggerable or delayed-trigger implementations when the external timing network and reset sequencing are designed correctly. Confirm the intended mode at power-up, hold the disable path above 10 kΩ as specified, and validate output pulse width, reset recovery, and timing tolerance across the intended operating conditions.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ CD4536BPW — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | CD4536BE | 74HC4060 | 74HC390 |
|---|---|---|---|---|
| Product Type | CMOS programmable timer and counter | CMOS timer and counter | Programmable oscillator and counter | Dual binary counter |
أبرز الفروقات
- Provides a programmable 24-stage timer with decoded timing taps (مقابل74HC4060)
- Combines programmable timing with a dedicated monostable input (مقابل74HC390)
- Same functional family but not a same-footprint substitution (مقابلCD4536BE)
ملاحظات التصميم
Place the supply bypass capacitor as close as practical to the power and ground pins, and keep the oscillator network connections short to reduce coupling into the counter and output stages. Confirm that the external resistor and capacitor values remain within the timing range shown in the Texas Instruments CD4536B datasheet. Reset, A, B, C, D, and 8-BYPASS must not float during startup; use suitable pull resistors or actively drive them from control logic.
Route the oscillator components away from decoded outputs and external clock inputs because the timing node can be sensitive to capacitive loading and crosstalk. Keep ground-return paths short and use a continuous ground plane where practical. The CD4536BPW uses ripple-binary counting, so stage propagation delay accumulates over long counts; include that delay and the selected oscillator tolerance when calculating the maximum output interval.
Do not treat CD4536BE, 74HC4060, or 74HC390 as direct drop-in replacements merely because they provide timing or counting functions. CD4536BE uses a different package, while the 74HC devices have different counter architectures and pin assignments. Validate every replacement against the manufacturer pin table, counter range, oscillator arrangement, output timing, supply limits, and PCB footprint before approving a substitution.
معلومات الامتثال
The Texas Instruments product page states that the CD4536B family meets JEDEC Tentative Standard No. 13B for B-series CMOS devices. RoHS, REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals declarations require confirmation from the current manufacturer documentation.
