Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
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Technical data
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HEF4528BT(LX) 是灵星芯微(LX)提供的一款双通道单稳态多谐振荡器(Dual Monostable Multivibrator),封装为 SOP-16,属于经典的 4000 系列 CMOS 器件。器件工作电压范围宽(3V ~ 12V)、功耗低、抗干扰能力强,适合多种计时与脉冲整形应用。
HEF4528BT 提供两个独立的单稳态通道。每个通道通过外接电阻 R 和电容 C 来设置输出脉冲宽度(脉冲宽度随 R、C 值成比例变化,可从纳秒到秒级调整)。器件具备可重触发能力:在一次输出脉冲未结束时若再次触发,可延长或重新产生脉冲(具体行为取决于触发与复位时序)。另外设有复位输入,用于即时清除输出或保证初始状态,便于系统控制。
相较于传统 NE555 等单一单稳器件,HEF4528BT 的优势在于双通道集成、宽电源范围、CMOS 低功耗与更高的噪声免疫。其传播延迟 ~60ns 属于中速,适合多数定时与脉冲整形任务,但不适用于要求高输出驱动或高精度亚微秒级定时的场合。
总结:HEF4528BT(LX) 以其双通道集成、可调脉冲宽度、可重触发与复位输入等特点,适合在低功耗、宽电源范围的计时与脉冲处理场合中替代传统一体化单稳态解决方案。设计时注意外接 R/C 精度、去耦与输出驱动能力,即可获得稳定可靠的定时性能。
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Product sourcing intelligence
WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.
Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.
Buyer sourcing scenarios
Typical RFQ scenarios based on the WMSIC form fields, catalog data, manual review steps, and shipment preparation workflow.
The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.
A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.
The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.
Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.
Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.
When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.
Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.
The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.
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