CD4024BHSR - 7-Bit Binary Ripple Counter 3-18V | Renesas
MPN： CD4024BHSR ✓ 啟用中CD4024BHSR 概覽
A binary ripple counter is a digital counter in which the output of each flip-flop stage clocks the next stage, rather than all stages clocking from a common source. Ripple counters sit within the broader hierarchy of sequential logic -> counters/dividers -> logic ICs. Because the carry ripples through seven stages, propagation delays accumulate, which limits the maximum count frequency but yields an extremely simple, low-power, low-pin-count frequency divider architecture.
Key features of the CD4024BHSR include the 7-bit counting range (divide-by-2 through divide-by-128), unbuffered monolithic CMOS construction, negative-edge clock triggering, and an asynchronous active-high reset. The wide 3 V to 18 V supply range makes it compatible with legacy CMOS and military power rails, and the -55C to +125C rating supports harsh-environment designs such as avionics and defense systems.
Technically, the unbuffered CMOS output structure gives the part reduced switching noise and the ability to operate with very low quiescent power, although unbuffered outputs exhibit higher output impedance than buffered 4000-series equivalents. Each of the seven Q outputs divides the input clock by successive powers of two, enabling cascaded frequency division from a single package.
Typical applications include frequency division in clock trees, long-duration timers in industrial controllers, event counting in instrumentation, and ripple-divider chains in military and aerospace electronics where the die-format packaging supports custom hybrid or COB (chip-on-board) assembly.
When designing with this part, remember that asynchronous ripple counters produce decode glitches on intermediate states; decode only when the count is settled or use a synchronous counter if glitch-free outputs are required.
This page adds information gain beyond the datasheet by consolidating distributor stock data, drop-in same-family alternatives, comparison tables, and practical design notes for the CD4024BHSR in one place.
直接替換替代品，適用於 CD4024BHSR — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
CD4024BM96
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
CD4024BM
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
CD4024BMSR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
CD4024BMS
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
CD4024BE
✅ 直接替換📋 參考替代品（不在目錄中）
CD4024BM
✅ 直接替換📋 參考替代品（不在目錄中）
HCF4024BEY
✅ 直接替換📋 參考替代品（不在目錄中）
CD4024BHSR 最大額定值與電氣特性
| Logic Function | Binary Ripple Counter |
| Number of Bits | 7 bit |
| Number of Elements | 1 |
| Count Rate (Maximum Frequency) | 12 MHz |
| Trigger Type | Negative Edge |
| Reset Type | Asynchronous |
| Supply Voltage Range | 3 V to 18 V |
| 工作溫度 | -55C to +125C |
| Technology Family | CD4000 CMOS (unbuffered) |
| 封裝 | Die |
| 安裝類型 | Surface Mount (die attach / COB) |
| RoHS 狀態 | ROHS3 Compliant |
| Manufacturer | Renesas Electronics Corporation |
| Original Manufacturer Lineage | Intersil |
CD4024BHSR die 腳位配置指南
CD4024BHSR（die 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： CD4024BHSR.
請參閱 資料表 以查看完整腳位配置。
典型應用
CD4024BHSR 適用於 6 應用s: Frequency Division in Clock Trees, Long-Duration Industrial Timers, Hybrid and Chip-on-Board Assembly, Event Counting and Instrumentation, Military and Avionics Legacy Maintenance, Digital Panel Meters and Display Drivers.
Frequency Division in Clock Trees
The CD4024BHSR's seven cascaded divide-by-two stages give a single 14-pin-equivalent die the ability to derive divide-by-2 through divide-by-128 outputs from one 12 MHz maximum clock source, eliminating a chain of individual flip-flops. In a hybrid clock tree, the master oscillator drives the CLOCK pin; each Q output then supplies a lower-frequency clock to peripheral logic. Because the unbuffered CMOS construction adds little jitter of its own and the wide 3 V to 18 V supply range tolerates noisy hybrid power rails, the part is a robust choice for legacy avionics and industrial timing modules where a programmable divider would be overkill.
推薦
Long-Duration Industrial Timers
By cascading the CD4024BHSR's 7-bit output (divide-by-128) with a second counter stage, engineers build timers that stretch a 1 kHz clock into multi-second and multi-minute intervals with very low component count. The asynchronous MASTER RESET allows immediate restart of a timing cycle, and the 3 V to 18 V supply range means the timer can run from unregulated industrial supplies. In a typical circuit, an RC or crystal oscillator clocks the CD4024BHSR, and a NAND gate decodes the terminal count to end the timing window. The -55C to +125C rating keeps timing thresholds stable in unheated factory cabinets.
推薦
Hybrid and Chip-on-Board Assembly
The defining feature of the CD4024BHSR is its unpackaged die format, which makes it the natural choice for hybrid microcircuits and COB assemblies where a standard SOIC or DIP footprint cannot fit. Die attach and wire bonding place the 7-bit counter directly on the hybrid substrate, saving package height and area compared to a mounted 14-lead package. This format is common in avionics modules, implantable-class heritage medical hybrids, and defense electronics where the -55C to +125C specification and Intersil military lineage are qualification prerequisites. Designers must specify die geometry and bond-pad coordinates from the Renesas die drawing when planning assembly.
推薦
Event Counting and Instrumentation
In test and measurement equipment, the CD4024BHSR serves as a front-end event prescaler that divides a high-rate pulse train down to a rate a microcontroller or frequency counter can capture. With a 12 MHz maximum count rate, the die comfortably handles pulse streams from flow meters, Geiger tube circuits, and shaft encoders after shaping. The wide supply range allows the counter to share the sensor's rail (for example a 12 V automotive-derived supply) without a level-shifting stage, and Q1 through Q7 provide binary-weighted intermediate counts usable for simple threshold detection with diode-OR decoding.
推薦
Military and Avionics Legacy Maintenance
Programs maintaining legacy military platforms frequently need exact-function replacements for 1970s-to-1990s CMOS logic. The CD4024BHSR, with Intersil lineage now under Renesas and the full -55C to +125C range, matches the original 4024B die used in these designs, so boards can be repaired with identical electrical behavior and no requalification of timing margins. The 3 V to 18 V supply tolerance also covers the 15 V CMOS rails common in military hybrids. Sourcing through authorized channels with traceable date codes is critical; DigiKey lists the part as shipping from stock as of 2026.
推薦
Digital Panel Meters and Display Drivers
The CD4024BHSR's binary-weighted outputs feed decoding logic in digital panel meters, frequency display modules, and simple rev counters. In such designs, the 4024B divides the input signal to a rate suitable for latching into BCD counters or driving multiplexed displays, with the asynchronous reset zeroing the count each measurement window. The unbuffered CMOS outputs interface directly to 4000-series decoder gates on the same 12 V or 15 V rail, keeping the whole display chain at one supply voltage and avoiding level translators - an advantage in battery-powered or isolated instruments where simplicity and low quiescent power dominate the design goals.
推薦
推薦產品摘要
工程參考資料，適用於 CD4024BHSR — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | CD4024BM96 | CD4024BMS | CD4024BE | HCF4024BEY |
|---|---|---|---|---|---|
| Brand | Renesas Electronics (Intersil lineage) | Renesas Electronics | Renesas Electronics | Texas Instruments | STMicroelectronics |
| Package | Die (unpackaged) | SOIC-14 | DIP-14 (ceramic) | DIP-14 | DIP-14 |
| Counter Bits | 7 bit | 7 bit | 7 bit | 7 bit | 7 bit |
| Supply Voltage Range | 3 V to 18 V | 3 V to 18 V | 3 V to 18 V | 3 V to 18 V | 3 V to 20 V (per ST family spec) |
| Operating Temperature | -55C to +125C | -55C to +125C | -55C to +125C | -55C to +125C | -55C to +125C (Y temp variant) |
| Reset Type | Asynchronous MASTER RESET | Asynchronous | Asynchronous | Asynchronous | Asynchronous |
主要差異化特點
- Die-format packaging for hybrid integration (對比CD4024BE)
- Full military temperature range (對比HCF4024BEY)
- 7 independent divide outputs from one die (對比CD4013-based discrete divider chain)
設計說明
Because the CD4024BHSR is a ripple counter, outputs Q1-Q7 do not change simultaneously: the carry propagates through up to seven stages, each adding tens of nanoseconds of delay depending on supply voltage (faster at 15 V, slower at 3 V). Any combinational decode of the parallel outputs must either be gated with the clock, latched after settling, or restricted to the terminal count that changes once per full cycle. If your system requires glitch-free parallel reads, add a latch clocked after the counter settling time, or substitute a synchronous counter family.
The 3 V to 18 V supply range tolerates unregulated industrial rails, but CD4000-series CMOS speed and noise immunity vary strongly with VDD: at 5 V expect roughly half the count rate of the 12 MHz figure quoted at higher voltage. Decouple with 100 nF ceramic close to the die's power bond pads and add a small bulk capacitor on the hybrid substrate. Unused CMOS inputs (none expected on this part beyond CLOCK and RESET, but check your netlist) must never float - tie RESET low and condition CLOCK with a Schmitt trigger (e.g., CD40106) if the source has slow edges.
The BHSR suffix indicates unpackaged die: there are no leads, no mark, and no standard footprint. Before assembly, obtain the Renesas die drawing for bond-pad coordinates and orientation, and plan a die-attach and wire-bond process compatible with the -55C to +125C rating (e.g., eutectic or conductive epoxy attach). Do not assume pin functions from a packaged 4024B without verifying against the die drawing - pad numbering differs from package pin numbering. Handle with ESD precautions; unbuffered CMOS inputs are sensitive despite input protection networks.
合規資訊
ROHS3 Compliant per Full-Electronic product listing. REACH, lead-free, halogen-free, and conflict-minerals status not stated in the available data; verify with Renesas product compliance documentation.
