CS82C84A - 25MHz CMOS Clock Generator | Intersil
料号： CS82C84A ✓ 量产中CS82C84A 概述
A clock generator is an integrated circuit that establishes or conditions a periodic timing reference for digital systems. Within the clock and timing IC hierarchy, the CS82C84A belongs to the clock generator and synchronizer class, combining clock generation with buffer or fanout capability. Its CMOS construction supports integration into systems built around microprocessors, bus controllers, and other digital logic requiring a common clock source.
The verified product listing identifies the CS82C84A as a clock generator, clock synchronizer, and fanout-distribution IC operating to 25 MHz. The device is also described as a CMOS clock generator-driver. Additional datasheet information, including its exact input clock range, supply-voltage limits, operating temperature, output configuration, and propagation-delay figures, is not available in the supplied verified records and should therefore be confirmed from the manufacturer datasheet before design release.
Its principal engineering role is to generate or distribute a timing reference while coordinating clock outputs for attached logic. The 20-pin LCC package provides a relatively high pin count for this legacy timing function, allowing power, reference, control, and multiple clock-related connections. Because the verified sources identify a 25 MHz maximum frequency, the device belongs to designs using legacy or moderate-speed clocking rather than current high-speed processor interfaces.
Typical uses include microprocessor timing control, bus-interface synchronization, embedded processor support logic, and legacy industrial or control equipment in which a dedicated clock generator-driver simplifies clock distribution. For each application, designers should verify signal levels, oscillator configuration, pin termination, and timing margins against the original system documentation because those details are not exposed in the provided snippets.
When replacing or integrating this device, preserve the original 20-LCC footprint and confirm pin-level compatibility against the authoritative datasheet. Do not substitute a functionally similar oscillator without checking input frequency, supply voltage, output waveform, synchronization behavior, and propagation delay. The available cross-reference evidence identifies pin-to-pin replacement candidates, but it does not provide enough detail to guarantee unqualified second-source coverage.
This page consolidates the verified 25 MHz classification, package information, distributor availability, source links, replacement candidates, and design cautions into a procurement-oriented engineering reference. It separates confirmed parameters from unavailable details so engineers can make an initial sourcing decision without mistaking inferred or generic clock-generator characteristics for published CS82C84A specifications.
直接替换替代料： CS82C84A ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
CS82C84
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
N82C84A
✅ 直接替换📋 参考替代料（不在目录中）
CP82C84AZ
✅ 直接替换📋 参考替代料（不在目录中）
CS82C84A 规格参数
| Product Type | Clock Generator, Clock Synchronizer, Fanout Distribution IC |
| Device Function | CMOS clock generator-driver |
| 最大时钟频率 | 25 MHz |
| 电源电压 | 5 V |
| Logic Technology | CMOS |
| Package Type | 20-LCC (J-Lead) |
| Total Pin Count | 20 pins |
| 安装类型 | Through-hole leaded chip carrier |
| RoHS 状态 | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | not_applicable |
CS82C84A 20-lcc (j-lead) 引脚配置指南
CS82C84A（20-lcc (j-lead) 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： CS82C84A.
请参阅 数据手册 以查看完整引脚配置。
典型应用
CS82C84A 适用于 6 应用s: Legacy Microprocessor Timing Control, Clock Synchronization for Bus Logic, Industrial Control System Timing, Embedded Processor Support Logic, Test and Measurement Equipment, Legacy Communication Interface Control.
Legacy Microprocessor Timing Control
The CS82C84A fits legacy microprocessor timing systems that require a dedicated clock generator-driver rather than a generic oscillator. Its published 25 MHz frequency class and integrated clock-generation, synchronization, and fanout functions provide a defined starting point for processor, bus-control, and peripheral clock distribution. In a replacement design, retain the original 20-LCC J-lead layout and verify the processor's permitted clock range, input phase, startup behavior, and supply requirements. The component is most appropriate when preserving an established architecture is more important than adopting a newer clock IC with different logic or pin assignments.
Clock Synchronization for Bus Logic
The CS82C84A can support bus-oriented systems in which several digital sections must operate from a coordinated timing reference. Its documented synchronization and fanout-distribution roles are preferable to treating the device as a simple oscillator when the legacy design depends on common clock edges across processors, transceivers, and supporting logic. Because the supplied records confirm a 25 MHz maximum frequency but omit output count and propagation-delay data, engineers must compare the complete clock tree against the target bus timing. A footprint-compatible replacement is only suitable if its synchronization and output phase behavior also matches.
Industrial Control System Timing
The CS82C84A is applicable to legacy industrial controllers that use a discrete clock generator-driver for processor timing and peripheral synchronization. The 25 MHz device can serve as the central timing component when its supply, oscillator, and output requirements match the original controller. Its 20-LCC through-hole package supports repair and system-integration contexts where a modern surface-mount oscillator would require a board redesign. For maintenance programs, qualification should include supply tolerance, temperature behavior, clock accuracy, and long-term availability because these details are not established by the supplied distributor snippets.
Embedded Processor Support Logic
The CS82C84A can be used in embedded processor platforms that separate timing generation from the processor or bus controller. Its combination of a clock generator, synchronizer, and fanout distributor makes it relevant to designs needing multiple related clock outputs at up to 25 MHz. Engineers should reproduce the original oscillator connection, output loading, and synchronization logic before redesigning the circuit. The part is especially relevant for extending legacy equipment where changing clock topology could affect processor timing margins, peripheral handshaking, or diagnostic behavior.
Test and Measurement Equipment
The CS82C84A can serve as the timing reference and distribution element in legacy test or measurement equipment containing discrete digital control logic. A 25 MHz clock generator-driver can support sequential measurement systems, interface controllers, and status logic, although the supplied evidence does not establish suitability for precision signal sources. Engineers should separate its digital clock function from analog timing accuracy requirements and verify jitter, duty-cycle, and output-loading specifications in the manufacturer datasheet. This application is best treated as equipment maintenance or functional replication, where preserving the original footprint reduces redesign risk.
Legacy Communication Interface Control
The CS82C84A may be incorporated into older communication-interface assemblies requiring coordinated clock generation and fanout to control and peripheral logic. The 25 MHz rating places it within the operating class of many legacy microprocessor and bus interfaces, while synchronization and distribution functions help maintain a common timing reference. Verification must cover the transceiver or controller requirements, including permitted clock frequency, edge relationships, and power sequencing. When replacing CS82C84A in such equipment, use an explicitly pin-to-pin candidate and perform timing tests across temperature and supply tolerance.
工程参考数据： CS82C84A ——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 | CS82C84 | N82C84A | CP82C84AZ |
|---|---|---|---|---|
| Brand | Intersil Corporation | Intersil Corporation | Intersil Corporation | Intersil Corporation |
| Package | 20-LCC (J-Lead) | 20-LCC (J-Lead) | 20-LCC (J-Lead) | 20-LCC (J-Lead) |
| Product Type | Clock Generator, Clock Synchronizer, Fanout Distribution IC | CMOS clock generator-driver | Clock generator-driver family device | Clock controller family device |
| Maximum Frequency | 25 MHz | 25 MHz | 25 MHz | 25 MHz |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V |
| Logic Technology | CMOS | CMOS | CMOS | CMOS |
| Pin Count | 20 pins | 20 pins | 20 pins | 20 pins |
| Clock Generation | Yes | Yes | Yes | Yes |
| Clock Synchronization | Yes | Yes | Yes | Yes |
| Fanout Distribution | Yes | Yes | Yes | Yes |
关键差异点
- Combines clock generation, synchronization, and fanout distribution （对比 CS82C84)
- Directly identified pin-to-pin replacement route （对比 N82C84A)
- Matches the published 5 V and 25 MHz operating class （对比 CP82C84AZ)
设计说明
Treat the CS82C84A as a footprint-specific replacement. The verified package is a 20-LCC J-lead device, so preserve pin 1 orientation, lead pitch, pad geometry, and the original component height clearance. Before ordering a substitute, overlay the manufacturer land pattern and compare every pin by name and function. A shared family name or a distributor category label is not sufficient evidence of pin compatibility.
Do not substitute a generic oscillator for the CS82C84A without analyzing the complete clock function. The confirmed device combines clock generation, synchronization, and fanout distribution at a 25 MHz class. A generic oscillator may omit synchronization, have different edge relationships, or present a different startup characteristic. Validate the replacement against clock accuracy, duty cycle, propagation delay, load capability, and every downstream timing requirement.
The indexed specification identifies a 5 V supply, but the complete operating range is not present in the supplied records. Confirm minimum and maximum supply voltage, supply-current limits, and decoupling requirements directly from the manufacturer datasheet. Place bypass capacitors according to that guidance and keep high-current return paths short. Verify power-sequencing behavior when replacing the device in a system containing sensitive processors or bus transceivers.
Clock-distribution layouts should minimize trace length differences and provide a continuous return path, especially when the CS82C84A drives multiple digital loads. Confirm output rise and fall times, capacitive-load limits, propagation-delay tolerance, and whether outputs require termination. Although the verified records do not expose these electrical details, they are necessary for reliable edge timing and should be checked before release.
合规信息
The supplied verified records do not contain explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations. The device is a legacy CMOS logic IC rather than an automotive-qualified AEC-Q100 product.
