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Product Overview
The SN7445N is a BCD-to-decimal decoder/driver from Texas Instruments, designed to convert 4-bit BCD input into 10 mutually exclusive outputs. It features high-voltage open-collector outputs capable of driving up to 80V and 80mA, making it suitable for driving indicator tubes, relays, or other high-voltage loads. Packaged in a 16-pin PDIP, this device operates over a supply voltage range of 4.75V to 5.25V and is characterized for operation from 0°C to 70°C.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
4.75V – 5.25V |
| Input Voltage (VI) |
0V – 5.25V |
| Output Voltage (VO) (off-state) |
Max 80V |
| Output Current (IO) (sink) |
Max 80mA per output |
| Propagation Delay (tPLH/tPHL) |
Typ 22ns / 15ns |
| Operating Temperature |
0°C – 70°C |
| Package |
16-PDIP |
Key Features
- BCD-to-decimal decoding with 10 outputs
- High-voltage open-collector outputs (80V, 80mA)
- Active low outputs for direct drive
- Input clamp diodes for transient protection
- Standard TTL supply voltage (5V)
Target Applications
- Nixie tube drivers in vintage display systems
- Relay and solenoid drivers in industrial control
- High-voltage indicator lamp drivers in test equipment
- Memory address decoding in legacy systems
- Interface between TTL logic and high-voltage peripherals
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
SN7445N. Our core advantages include:
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24/7 Global Customer Support: Professional team providing instant
quotes and technical support worldwide.
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In-stock Inventory, Same-day Shipping: We maintain localized stock;
orders confirmed before 4 PM are shipped the same day.
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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.
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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.
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100% Original & Authentic: All components are guaranteed to
be authentic with strict quality control.
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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
SN7445N 是德州儀器(TI)生產的 BCD 轉十進制解碼器/驅動器,可將 4 位 BCD 輸入轉換為 10 個互斥輸出。它具有高壓開路集電極輸出,最高可承受 80V 電壓和 80mA 電流,適用於驅動指示燈管、繼電器或其他高壓負載。器件採用 16 引腳 PDIP 封裝,電源電壓範圍為 4.75V 至 5.25V,工作溫度範圍為 0°C 至 70°C。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 (VCC) |
4.75V – 5.25V |
| 輸入電壓 (VI) |
0V – 5.25V |
| 輸出電壓 (VO) (關斷狀態) |
最大 80V |
| 輸出電流 (IO) (灌電流) |
每路最大 80mA |
| 傳播延遲 (tPLH/tPHL) |
典型 22ns / 15ns |
| 工作溫度 |
0°C – 70°C |
| 封裝 |
16-PDIP |
核心特性
- BCD 轉十進制解碼,10 路輸出
- 高壓開路集電極輸出(80V,80mA)
- 低電平有效輸出,可直接驅動
- 輸入帶鉗位二極管,防止瞬態過壓
- 標準 TTL 電源電壓(5V)
典型應用場景
- 老式顯示系統中的輝光數碼管驅動
- 工業控制中的繼電器和電磁閥驅動
- 測試設備中的高壓指示燈驅動
- 舊式系統中的存儲器地址解碼
- TTL 邏輯與高壓外設之間的接口
環球供應鏈與批發合作夥伴方案
在 Jasin Chip,我們為 SN7445N 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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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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