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Product Overview
The SN74LS122N is a retriggerable monostable multivibrator from Texas Instruments, designed for generating precise output pulses of variable duration. It features dual inputs (A and B) and a clear input for resetting the output. The device is housed in a 14-pin PDIP package, making it suitable for through-hole PCB assembly. It operates over a wide supply voltage range of 4.75V to 5.25V and offers typical propagation delays of 22ns. The output pulse width is determined by external timing components (Rext and Cext), providing flexibility for various timing applications.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
4.75V to 5.25V |
| Output Pulse Width |
Set by Rext and Cext
|
| Propagation Delay (tPLH/tPHL) |
22 ns typical |
| Input Voltage (VIH/VIL) |
2V / 0.8V |
| Output Current (IOH/IOL) |
-0.4 mA / 8 mA |
| Operating Temperature |
0°C to 70°C |
| Package |
14-PDIP |
Key Features
- Retriggerable monostable operation
- Dual input (A and B) for triggering
- Clear input for resetting output
- Wide pulse width range via external R and C
- Schmitt-trigger input for noise immunity
- Low power consumption
- Compatible with TTL logic levels
Target Applications
- Pulse generation in 5G base station control boards
- Timing delay circuits in automotive dashboard displays
- Debouncing switches in industrial control panels
- Frequency division in telecommunications equipment
- One-shot pulse generation in medical devices
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
SN74LS122N. Our core advantages include:
-
24/7 Global Customer Support: Professional team providing instant
quotes and technical support worldwide.
-
In-stock Inventory, Same-day Shipping: We maintain localized stock;
orders confirmed before 4 PM are shipped the same day.
-
HK-SZ Synergy, Flexible Settlement: Direct global shipping from
Shenzhen with support for HK bank transfers and multi-currency.
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Escrow Secured Transactions: We support Escrow.com for secure
transactions, ensuring peace of mind for batch orders.
-
BOM Kitting & Sampling Services: Specialized sourcing for
testing samples and urgent shortage components.
Quality Assurance & Compliance
Jasin Chip guarantees that all delivered products are 100% original factory stock
with full quality assurance and traceability.
-
100% Original & Authentic: All components are guaranteed to
be authentic with strict quality control.
-
RoHS Compliant: All electronic components comply with international
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
SN74LS122N 是德州儀器生產的可重觸發單穩態多諧振盪器,用於產生精確的可變持續時間輸出脈衝。它具有雙輸入(A 和 B)和一個用於復位輸出的清除輸入。該器件採用 14 引腳 PDIP 封裝,適合通孔 PCB 組裝。它在 4.75V 至 5.25V 的寬電源電壓範圍內工作,典型傳播延遲為 22ns。輸出脈衝寬度由外部定時元件(Rext 和 Cext)決定,為各種定時應用提供了靈活性。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 (VCC) |
4.75V 至 5.25V |
| 輸出脈衝寬度 |
由 Rext 和 Cext 設定 |
| 傳播延遲 (tPLH/tPHL) |
典型值 22 ns |
| 輸入電壓 (VIH/VIL) |
2V / 0.8V |
| 輸出電流 (IOH/IOL) |
-0.4 mA / 8 mA |
| 工作溫度 |
0°C 至 70°C |
| 封裝 |
14-PDIP |
核心特性
- 可重觸發單穩態操作
- 雙輸入(A 和 B)觸發
- 清除輸入用於復位輸出
- 通過外部電阻和電容實現寬脈衝寬度範圍
- 施密特觸發輸入,抗噪聲能力強
- 低功耗
- 與 TTL 邏輯電平兼容
典型應用場景
- 5G 基站控制板中的脈衝生成
- 汽車儀表盤顯示中的定時延遲電路
- 工業控制面板中的按鍵消抖
- 電信設備中的分頻
- 醫療設備中的單次脈衝生成
環球供應鏈與批發合作夥伴方案
在 Jasin Chip,我們為 SN74LS122N 提供全面的供應鏈與批發解決方案。
我們的核心優勢包括:
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全天候環球客戶支援:專業團隊為您提供即時報價及技術支援,無需漫長等待。
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BOM 配單與樣板服務:提供樣板測試及認證支援。專注一站式 BOM 配套及緊急缺料採購服務。
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Jasin Chip 承諾所有出貨產品均為原廠正貨,具備完善的品質保證及產品可追溯性。
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原廠封裝保護:嚴格保留原廠原始包裝及封條,確保物流過程中的靜電防護 (ESD) 與物理安全。
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