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Product Overview
The SN74145NS is a BCD-to-decimal decoder/driver from Texas Instruments, designed to convert 4-bit BCD input into 10 mutually exclusive active-low outputs. Housed in a 16-pin SOIC package, it integrates high-voltage output transistors for driving indicator tubes or relays. This device is ideal for digital display systems and industrial control applications requiring reliable decoding and high-current drive capability.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
4.75V to 5.25V |
| Input Voltage (VIH) |
2.0V min |
| Input Voltage (VIL) |
0.8V max |
| Output Voltage (VOH) |
2.4V min (IOH=-0.4mA) |
| Output Voltage (VOL) |
0.4V max (IOL=16mA) |
| Propagation Delay (tPLH/tPHL) |
15ns typical |
| Power Dissipation |
33mW per gate |
| Operating Temperature |
0°C to 70°C |
| Package |
16-SO (SOIC-16) |
Key Features
- BCD-to-decimal decoding with active-low outputs
- High-voltage outputs (up to 30V) for driving Nixie tubes or relays
- Open-collector outputs for wired-AND applications
- Schmitt-trigger inputs for noise immunity
- Low power consumption: 33mW typical per gate
- Wide operating voltage range: 4.75V to 5.25V
- Industry-standard pinout compatible with 74LS145
Target Applications
- Digital display systems: Nixie tube drivers in vintage equipment or retro-style clocks
- Industrial control: Relay drivers for automated machinery in factory automation
- Test and measurement: Decoding BCD outputs from counters in frequency meters or multimeters
- Telecommunications: Address decoding in 5G base station control boards
- Automotive: Dashboard indicator drivers for warning lights or segment displays
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
SN74145NS. 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
SN74145NS 是德州儀器推出的BCD-十進制解碼器/驅動器,可將4位BCD輸入轉換為10個互斥的低電平有效輸出。採用16引腳SOIC封裝,集成高壓輸出晶體管,適用於驅動指示燈管或繼電器。該器件非常適合數字顯示系統和工業控制應用,需要可靠的解碼和高電流驅動能力。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 (VCC) |
4.75V 至 5.25V |
| 輸入高電平 (VIH) |
最小值 2.0V |
| 輸入低電平 (VIL) |
最大值 0.8V |
| 輸出高電平 (VOH) |
最小值 2.4V (IOH=-0.4mA) |
| 輸出低電平 (VOL) |
最大值 0.4V (IOL=16mA) |
| 傳播延遲 (tPLH/tPHL) |
典型值 15ns |
| 功耗 |
每門 33mW |
| 工作溫度 |
0°C 至 70°C |
| 封裝 |
16-SO (SOIC-16) |
核心特性
- BCD-十進制解碼,低電平有效輸出
- 高壓輸出(最高30V),用於驅動輝光管或繼電器
- 開集電極輸出,支持線與應用
- 施密特觸發輸入,增強抗噪能力
- 低功耗:典型每門33mW
- 寬工作電壓範圍:4.75V 至 5.25V
- 行業標準引腳排列,與74LS145兼容
典型應用場景
- 數字顯示系統:復古設備或復古風格時鐘中的輝光管驅動器
- 工業控制:工廠自動化機械中的繼電器驅動器
- 測試測量:頻率計或萬用表中計數器BCD輸出的解碼
- 電信:5G基站控制板中的地址解碼
- 汽車電子:儀表盤指示燈或段碼顯示驅動器
環球供應鏈與批發合作夥伴方案
在 Jasin Chip,我們為 SN74145NS 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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