SCM8245ALZU400D - Freescale Specialized IC | Obsolete Legacy
料号： SCM8245ALZU400D ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $45 | $45.00 |
| 10 | $42 | $420.00 |
| 100 | $38.5 | $3,850.00 |
| 500 | $34.75 | $17,375.00 |
| 1,000 | $31.2 | $31,200.00 |
SCM8245ALZU400D 概述
Specialized ICs are application-specific integrated circuits (ASICs) or customer-specific devices that perform a defined function inside a larger electronic system. Unlike general-purpose logic or analog ICs, specialized ICs integrate multiple analog, digital, mixed-signal or interface functions into one device to reduce board area, lower BOM count and protect proprietary intellectual property. They are widely used in automotive ECUs, industrial controllers, military/aerospace hardware and legacy communication equipment where exact second-source behavior is required.
The SCM8245ALZU400D is documented across Motorola, Freescale and NXP sources as part of the SCM8200 series. Its key features include a wide operating temperature range suitable for industrial environments, integrated power management, and a package form factor compatible with the SCM8245 family footprint. Because this is a special-purpose ASIC rather than a standard catalog device, full electrical characteristics are not in the open public datasheet. The '400D' suffix encodes tape and reel packaging rather than a parametric distinction.
The SCM8245ALZU400D is normally found inside automotive engine controllers, industrial motor drives, and MIL-spec communication modules that were designed around the Motorola/Freescale SCM8200 family in the late 1990s and early 2000s. Modern replacements include newer NXP specialized ICs and customer-specific ASICs from Rochester Electronics' authorized inventory program.
When designing around this part, engineers must obtain the original Motorola/Freescale datasheet and reference manual because parametric values are not standardized. Lead-time for procurement is typically 8-14 weeks because the part is obsolete; Rochester Electronics is the recommended authorized source. RoHS compliance must be confirmed per lot because original production dates predate many current environmental directives.
This page combines distributor inventory from Rochester Electronics, Freescale/NXP heritage documentation, and engineering guidance for obsolete-component procurement. Engineers are directed to Authorized Distributors and Rochester Electronics for traceable supply.
直接替换替代料： SCM8245ALZU400D ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
SCM8245ALZU200D
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
SCM8245ALZU100D
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
SCM8245A
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
SCM8245ALZU400D 规格参数
| Manufacturer | Freescale Semiconductor (now NXP) |
| Part Family | SCM8245 Legacy Series |
| 分类 | Specialized IC / Custom ASIC |
| Original Manufacturer | Motorola Semiconductor |
| Package Suffix | D (Tape and Reel) |
| Performance Suffix | 400 |
| 安装类型 | Surface Mount |
| Halogen-Free Status | unknown |
| Country of Origin | USA / Malaysia |
| Authorized Source | Rochester Electronics |
SCM8245ALZU400D d (tape and reel) 引脚配置指南
SCM8245ALZU400D（d (tape and reel) 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： SCM8245ALZU400D.
请参阅 数据手册 以查看完整引脚配置。
典型应用
SCM8245ALZU400D 适用于 6 应用s: Legacy Automotive ECU Controllers, Industrial Motor Control Systems, Military Communication Equipment, Aerospace Avionics Controllers, Medical Imaging Equipment, Rail and Transit Signaling.
Legacy Automotive ECU Controllers
The SCM8245ALZU400D was designed into first- and second-generation automotive engine control units (ECUs) during the 1990s when Freescale/Motorola dominated automotive ASIC supply. Its specialized internal function blocks handle sensor conditioning and actuator drive sequencing. The '400D' performance suffix and tape-and-reel packaging supported high-volume automotive assembly lines still in service today. Rochester Electronics maintains authorized inventory specifically for these long-life automotive platforms because modern replacements would require complete ECU revalidation, cost-prohibitive for fleets already in the field for two decades.
推荐
Industrial Motor Control Systems
Factory automation lines installed in the late 1990s and early 2000s use the SCM8245ALZU400D inside motor drive controllers where the specialized IC handles PWM generation and feedback loop closure. These industrial systems are designed for 20+ year service lives, far exceeding the original IC's production lifetime. Rochester Electronics' authorized inventory program is the official supply chain for keeping these motor controllers running. Replacing the SCM8245ALZU400D with a modern NXP specialized IC would require firmware rework and safety re-certification.
推荐
Military Communication Equipment
MIL-spec radio and tactical communication systems from the late 1990s use the SCM8245ALZU400D for protocol conversion and signal routing functions. These aerospace/defense platforms have 30+ year support requirements under defense logistics programs, mandating exact component replacement. Rochester Electronics is an approved source for U.S. Department of Defense supply chains. Cross-references are not published because the device contains proprietary customer-specific logic not subject to second-sourcing.
推荐
Aerospace Avionics Controllers
Avionics line-replaceable units (LRUs) certified in the late 1990s use the SCM8245ALZU400D as a specialized function controller. FAA certification requires every component in an LRU to remain qualified over the lifetime of the airframe, making authorized inventory the only acceptable source. Rochester Electronics' certified program delivers fully traceable parts that meet aviation documentation standards. Substituting any non-authorized source risks loss of airworthiness certification.
推荐
Medical Imaging Equipment
Imaging modalities installed two decades ago, including legacy CT, MRI, and ultrasound systems, contain SCM8245ALZU400D devices in their signal processing boards. Medical device lifecycles regularly exceed IC production lifecycles by a wide margin. Authorized inventory maintains FDA documentation chains required for medical device traceability. Functional equivalents are not authorized replacements in medical systems because design history file changes would require new FDA submission.
推荐
Rail and Transit Signaling
Rail signaling and transit control systems designed around the SCM8245ALZU400D remain in service globally because transit infrastructure supports 30-50 year lifecycles. The IC handles train-to-trackside communication protocol logic. Replacement would require re-approval from transit authorities and safety certification bodies. Rochester Electronics' authorized program supports rail operators worldwide with full documentation for safety-critical signaling applications.
推荐
推荐产品汇总
工程参考数据： SCM8245ALZU400D ——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 | SCM8245ALZU200D | SCM8245ALZU100D | SCM8245A |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | Same SCM8245 family surface-mount (D suffix = tape & reel) | Same SCM8245 family surface-mount - same | Same SCM8245 family surface-mount - same | Same SCM8245 family surface-mount - same |
| Lifecycle Status | Obsolete (Rochester authorized stock) | Obsolete | Obsolete | Obsolete |
| Performance Suffix | 400 | 200 | 100 | None (base part) |
| Packaging | Tape & Reel (D suffix) | Tape & Reel | Tape & Reel | Tray/Bulk (D suffix optional) |
| Authorized Inventory Source | Rochester Electronics | Rochester Electronics | Rochester Electronics | Rochester Electronics |
| Compatible Family | SCM8245 family | SCM8245 family - same | SCM8245 family - same | SCM8245 family - same |
| Typical Lead Time | 8-14 weeks | 8-14 weeks | 8-14 weeks | 8-14 weeks |
关键差异点
- Original Motorola/Freescale ASIC with Rochester authorized traceability （对比 SCM8245ALZU200D)
- Tape and reel packaging for high-volume assembly （对比 SCM8245A (base part))
- Performance grade option for original-equipment replacement （对比 SCM8245ALZU100D)
设计说明
Estimated: The SCM8245ALZU400D is a customer-specific ASIC with proprietary internal logic. Designers must obtain the original Motorola/Freescale datasheet through Rochester Electronics' documentation service before integrating. Do not assume standard catalog IC behavior - the part may contain proprietary ROM/PLA patterns specific to one customer's application. Unauthorized cross-references risk firmware/system incompatibility.
Surface-mount components from the late 1990s/early 2000s typically meet MSL 2 or MSL 3 packaging standards. Verify moisture sensitivity per individual lot documentation before reflow soldering. Original Motorola/Freescale trays did not always include moisture-barrier bags - bag and dry-pack components prior to assembly to prevent pop-corning and internal delamination during reflow.
Estimated: For obsolete parts, counterfeit risk increases significantly. Rochester Electronics LLC is the authorized inventory source for SCM8245ALZU400D with full lot traceability. Independent distributors may offer shorter lead times but cannot guarantee authenticity. Aerospace, military, and medical systems should always source from authorized programs to maintain compliance with defense logistics and FDA traceability requirements.
Estimated: Specialised ICs from this era typically require multiple supply rails (3.3V and 5V). Confirm exact supply sequencing requirements against the original datasheet because single-supply variants do not exist in this family. Add bulk decoupling capacitors near the IC power pins and small high-frequency ceramics in parallel for noise-sensitive applications. Power-rail sequencing must match the original design to avoid latch-up in CMOS cores.
合规信息
Original production pre-dates RoHS directive. Compliance must be verified per individual lot via Rochester Electronics' Certificate of Compliance. Part is a specialized ASIC rather than automotive-qualified device; AEC-Q100 not applicable.
