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Product Overview
The CD74HC221PW from Texas Instruments is a dual monostable multivibrator with Schmitt-trigger inputs, designed for high-speed CMOS logic systems. Each multivibrator features an active-low trigger (A) and an active-high trigger (B), along with a clear input (CLR). The output pulse width is controlled by external resistors and capacitors, providing flexibility for timing applications. Operating from 2V to 6V, this device is ideal for pulse shaping, delay generation, and frequency division in industrial and consumer electronics.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
2V to 6V |
| Input Voltage (VI) |
0V to VCC |
| Output Voltage (VO) |
0V to VCC |
| Propagation Delay (tPLH/tPHL) |
25ns typ at 5V, 15pF |
| Output Pulse Width (tw) |
External R, C controlled |
| Operating Temperature |
-55°C to +125°C |
| Package |
16-TSSOP |
Key Features
- Dual monostable multivibrator with Schmitt-trigger inputs
- Wide supply voltage range: 2V to 6V
- High speed: typical propagation delay 25ns at 5V
- Low power consumption: 80µA max at 25°C
- Output pulse width adjustable via external R and C
- Retriggerable and resettable capability
- Compatible with LSTTL logic levels
Target Applications
- Pulse shaping and timing in 5G base station control modules
- Delay generation in automotive dashboard displays
- Frequency division in industrial automation PLCs
- Debouncing circuits in consumer electronics like smart home hubs
- Pulse width modulation in medical device interfaces
Global Supply Chain & Wholesale Solutions
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CD74HC221PW. Our core advantages include:
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environmental and safety standards.
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Original Factory Packaging: We maintain original factory packaging
and seals to ensure ESD protection and physical integrity.
產品概述
CD74HC221PW 是德州儀器推出的雙單穩態多諧振盪器,具有施密特觸發輸入,專為高速 CMOS 邏輯系統設計。每個多諧振盪器具有低電平有效觸發(A)和高電平有效觸發(B),以及清零輸入(CLR)。輸出脈衝寬度由外部電阻和電容控制,為定時應用提供靈活性。工作電壓範圍為 2V 至 6V,適用於工業和消費電子中的脈衝整形、延遲生成和分頻。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 (VCC) |
2V 至 6V |
| 輸入電壓 (VI) |
0V 至 VCC |
| 輸出電壓 (VO) |
0V 至 VCC |
| 傳播延遲 (tPLH/tPHL) |
典型值 25ns @ 5V, 15pF |
| 輸出脈衝寬度 (tw) |
由外部 R、C 控制 |
| 工作溫度 |
-55°C 至 +125°C |
| 封裝 |
16-TSSOP |
核心特性
- 雙單穩態多諧振盪器,帶施密特觸發輸入
- 寬電源電壓範圍:2V 至 6V
- 高速:典型傳播延遲 25ns @ 5V
- 低功耗:25°C 時最大 80µA
- 輸出脈衝寬度可通過外部 R 和 C 調節
- 可重觸發和復位功能
- 與 LSTTL 邏輯電平兼容
典型應用場景
- 5G 基站控制模塊中的脈衝整形和定時
- 汽車儀表盤顯示中的延遲生成
- 工業自動化 PLC 中的分頻
- 智能家居中樞等消費電子中的去抖電路
- 醫療設備接口中的脈衝寬度調製
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