CD4516BF - 4-Bit Binary Up/Down Counter | Texas Instruments
MPN: CD4516BF ✓ فعالCD4516BF نمای کلی
A CMOS binary counter is a sequential digital-logic IC used to count clock edges in a defined up or down direction. The CD4516B family belongs to the broader CMOS counter and counter/dividers category, integrating flip-flops, count-direction control, preset logic, and carry output in one package. It is useful when a system needs adjustable four-bit sequencing, frequency division, event counting, or programmable timing intervals without implementing the state machine from individual gate-level logic.
Key characteristics include synchronous counting, binary counting format, four parallel preset inputs, active control for preset loading, and a carry output. According to the manufacturer documentation, maximum input current is 1 µA at 18 V over the full package-temperature range and 100 nA at 18 V and 25°C. Documented noise margins are 1 V at VDD = 5 V, 2 V at VDD = 10 V, and 2.5 V at VDD = 15 V.
The counter architecture uses synchronously clocked D-type flip-flops with gating that provides T-type flip-flop behavior. This structure supports count-up and count-down operation while allowing a parallel preset value to establish the starting state. Because the CD4516BF is packaged in a 16-pin CDIP rather than a surface-mount package, it is especially appropriate for through-hole industrial, control, instrumentation, and legacy-system assemblies where leaded construction and a wide temperature range are priorities.
Typical uses include digital time-base generation, batch and event counting, programmable sequence control, pulse accumulation, divide-by-two and divide-by-four clock generation, and test-equipment control logic. When connecting the device, preserve the counter's documented control-signal timing relationships, provide suitable logic levels for VDD and VSS, and account for unused inputs according to the manufacturer datasheet.
The main design tradeoff is package footprint rather than functionality: CDIP-16 is mechanically durable and easy to inspect or prototype with, but it occupies more board area than a 16-pin surface-mount package and is generally not preferred for compact new products. Verify logic thresholds, propagation delays, clock-edge requirements, and absolute maximum ratings before substituting it into a newer design.
This page combines the manufacturer's functional description, package and temperature information, electrical excerpts, compatible-part findings, and practical implementation guidance. It also highlights where engineers should consult the CD4516B datasheet for exact timing, supply-voltage limits, pin definitions, and recommended operating conditions rather than relying on general assumptions about CMOS counters.
جایگزین‌های drop-in برای CD4516BF — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
CD4516BEG4
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
CD4516BF
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←CD4516BF حداکثر مقادیر مجاز و مشخصات الکتریکی
| Counter Type | 4-bit presettable binary up/down counter |
| Counter Architecture | 4 synchronously clocked D-type flip-flops with T-type gating |
| Counting Mode | Synchronous up or down counting |
| Output Width | 4 bits |
| Maximum Input Current | 1 µA at 18 V over the full package-temperature range |
| Input Current at 25°C | 100 nA at 18 V |
| Noise Margin at 5 V | 1 V at VDD = 5 V |
| Noise Margin at 10 V | 2 V at VDD = 10 V |
| Noise Margin at 15 V | 2.5 V at VDD = 15 V |
| محدوده دمای کاری | -55°C to +125°C |
| بسته‌بندی | 16-pin CDIP, 0.300 inch body width |
| Lead Count | 16 leads |
| Technology | CMOS |
| نوع نصب | Through-hole |
| Preset Capability | Parallel preset of a 4-bit starting count |
| Carry Output | Present |
راهنمای پیکربندی پین CD4516BF 16-pin cdip, 0.300 inch body width
پیکربندی پین برای CD4516BF (پکیج 16-pin cdip, 0.300 inch body width). این IC دیجیتال شامل GPIO، رابط‌های ارتباطی (UART، SPI، I2C) و پین‌های تغذیه است. برای عملکردهای جایگزین پین و گزینه‌های پیکربندی به دیتاشیت سازنده مراجعه کنید. ضروری برای طراحی سیستم‌های نهفته و چیدمان PCB.
داده پین‌آوت تفصیلی موجود نیست برای CD4516BF.
به دیتاشیت برای پیکربندی کامل پین‌ها.
کاربردهای معمول
CD4516BF مناسب است برای 6 کاربردs: Digital Time-Base and Interval Generation, Industrial Event and Batch Counting, Programmable Sequence Control, Frequency Divider and Clock Conditioning, Test and Measurement Control Logic, Legacy Control and Retrofit Systems.
Digital Time-Base and Interval Generation
The CD4516BF fits digital time-base and interval-generation circuits because it combines a 4-bit synchronous binary counter with parallel preset loading. A controller can load a starting value and count clock pulses toward a terminal state, allowing one timer to handle repeated intervals without external counter logic. The documented -55°C to +125°C range is useful in industrial timing equipment, while the CDIP-16 package simplifies through-hole assembly and prototype rework. Confirm clock-edge behavior, propagation delay, and preset setup timing in the CD4516B datasheet, and use the carry output to cascade additional count stages.
Industrial Event and Batch Counting
The CD4516BF is suitable for industrial event-counting systems that must accumulate pulses from sensors, switches, or product-detection stages. Its 4-bit parallel preset allows the counter to begin from a nonzero baseline, while up or down counting supports ascending totals or remaining-event calculations. The CMOS implementation provides low input current, including a documented maximum of 1 µA at 18 V over the full package-temperature range, which is valuable in long wired sensing paths. Use Schmitt-compatible conditioning where appropriate, protect external inputs from transients, and validate pulse-width limits at the selected VDD.
Programmable Sequence Control
In programmable sequence control, the CD4516BF can hold the state of a four-step process and advance only when a qualified event arrives. Parallel preset inputs provide a flexible starting state, and the up/down direction can select between forward sequencing and reverse sequencing. This makes the device useful in test fixtures, dispensing controls, and small automation subsystems where a microcontroller would add unnecessary complexity. The 16-lead CDIP package is mechanically appropriate for rugged through-hole control boards. Designers should account for signal-propagation delay and ensure that preset, load, and clock signals meet the timing requirements shown in the manufacturer documentation.
Frequency Divider and Clock Conditioning
The CD4516BF can divide a repetitive clock into lower-rate binary count sequences and provide a carry indication at the end of a programmed count. That behavior supports pulse-rate monitoring, repetitive actuator timing, and clock-staging logic in older control systems. Its synchronous counting structure helps maintain a defined relationship among the four output bits, while the preset function permits programmable division intervals beyond a simple binary rollover. The 16-pin CDIP package favors laboratory and industrial through-hole assemblies rather than highly compact equipment. Confirm maximum clock frequency, output rise and fall time, and load capacitance because these characteristics vary with VDD and operating temperature.
Test and Measurement Control Logic
The CD4516BF can implement measurement-step sequencing, sample indexing, and instrument state counters in a test system. Presetting the count at the start of a measurement cycle enables repeatable timing windows, while carry output can trigger the next measurement stage or end-of-test function. Its wide -55°C to +125°C operating range also makes it a candidate for temperature-chamber and industrial test equipment. The CDIP-16 package remains practical for instrument boards assembled with through-hole parts and facilitates inspection. Avoid using the counter as a substitute for a precision timer when crystal accuracy is required, and follow the datasheet limits for clock transitions and output loading.
Legacy Control and Retrofit Systems
The CD4516BF is well suited to legacy industrial control and retrofit systems that retain through-hole CMOS logic but need programmable count sequencing. Its 16-pin CDIP footprint matches the leaded construction commonly encountered in older control equipment, reducing the mechanical disruption associated with introducing a surface-mount counter. The wide temperature range supports harsh industrial environments, and the low 18 V input-current specification can simplify sensitivity analysis for high-impedance sensing interfaces. Before upgrading equipment, verify the original counter's pinout and clock polarity, and compare the complete timing and voltage limits rather than assuming that all CD4516B variants are interchangeable.
داده‌های مرجع مهندسی برای CD4516BF — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | CD4516BEG4 | CD4516BF |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | CDIP-16 | CDIP-16 | CDIP-16 |
| Counter Type | 4-bit binary up/down counter | 4-bit binary up/down counter | 4-bit binary up/down counter |
| Counting Direction | Up or down | Up or down | Up or down |
تفاوت‌های کلیدی
- Wide operating-temperature range for industrial and legacy environments (در مقابلCD4516BEG4)
- Documented low input current for high-impedance sensing interfaces (در مقابلCD4516BEG4)
- Through-hole CDIP construction simplifies legacy-board integration (در مقابلCD4516BPWR)
یادداشت‌های طراحی
Treat the clock, load, preset, reset, and up/down control inputs as synchronous digital signals. Use the CD4516B timing diagrams to establish setup and hold time relative to the active clock edge, and keep clock traces short and away from the four count outputs. If a long cable drives the clock, return it to a proper ground reference and add conditioning close to the device rather than relying on the counter's low input current as a substitute for a sound signal-integrity design.
Connect VDD and VSS exactly as identified in the manufacturer pin-description table, and place the required bypass capacitor close to the supply pins. Select the bypass value and construction from the CD4516B datasheet rather than assuming a universal value. Because the published noise-margin points cover nominal 5 V, 10 V, and 15 V rails, verify the actual system rail and transient environment before relying on the corresponding logic-level margin.
Do not substitute CD4516BPWR for CD4516BF on an existing through-hole PCB; BPWR is a thin shrink small-outline package and requires a different land pattern. Also avoid substituting CD4510B, which counts in BCD rather than binary. For any proposed substitute, verify the CDIP-16 footprint, clock polarity, preset logic, carry timing, and operating-temperature requirements independently before releasing the design.
Keep the 16-pin CDIP footprint aligned with the manufacturer's mechanical drawing and observe the specified lead spacing and hole diameter. Route the four preset data inputs away from clock and carry traces to reduce setup-time risk. Leave clear access for inspection and socketed prototyping where practical, especially in legacy equipment where component replacement without damaging adjacent through-hole parts is important.
اطلاعات انطباق
The available documentation identifies the CD4516B family and its historical JEDEC Tentative Standard No. 13A compatibility, but it does not provide current RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations for CD4516BF. No AEC-Q100 qualification is indicated for this industrial logic counter.
