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Product Overview
The SN74148N is a high-performance 8-line to 3-line priority encoder from Texas Instruments (TI), designed for digital systems requiring efficient encoding of multiple input signals. It encodes eight data inputs (D0–D7) to a three-bit binary code (A0–A2), with D7 having the highest priority. The device features active-low inputs and outputs, making it ideal for bus-oriented applications. Housed in a 16-pin PDIP package, the SN74148N offers robust performance over a wide temperature range and is compatible with TTL logic levels.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
4.75V to 5.25V |
| Input High Voltage (VIH) |
2V min |
| Input Low Voltage (VIL) |
0.8V max |
| Output High Voltage (VOH) |
2.4V min (IOH = -0.4mA) |
| Output Low Voltage (VOL) |
0.4V max (IOL = 16mA) |
| Propagation Delay (tpd) |
23ns typ (D7 to A0) |
| Power Dissipation |
220mW typ |
| Operating Temperature |
0°C to 70°C |
| Package |
16-PDIP |
Key Features
- 8-line to 3-line priority encoding with active-low inputs and outputs
- Priority encoding ensures highest priority input (D7) is encoded first
- Enable input (EI) and enable output (EO) for cascading multiple devices
- Group signal output (GS) indicates when any input is active
- TTL-compatible inputs and outputs
- Standard 16-pin PDIP package for easy prototyping
- Wide operating temperature range: 0°C to 70°C
Target Applications
- Digital data processing systems (e.g., interrupt controllers in 5G base stations)
- Automotive dashboard control units for input multiplexing
- Industrial automation for sensor priority encoding
- Consumer electronics (e.g., remote control receivers)
- Memory address decoding in microcontroller systems
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
SN74148N. 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
SN74148N 是德州儀器 (TI) 生產的高性能 8 線轉 3 線優先編碼器,專為需要高效編碼多個輸入信號的數字系統設計。它將八個數據輸入 (D0–D7) 編碼為三位二進制代碼 (A0–A2),其中 D7 具有最高優先級。該器件採用低電平有效輸入和輸出,非常適合總線導向的應用。SN74148N 採用 16 引腳 PDIP 封裝,在寬溫度範圍內提供穩健性能,並與 TTL 邏輯電平兼容。
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 2V |
| 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 (tpd) |
典型值 23ns (D7 到 A0) |
| 功耗 |
典型值 220mW |
| 工作溫度 |
0°C 至 70°C |
| 封裝 |
16-PDIP |
核心特性
- 8 線轉 3 線優先編碼,低電平有效輸入和輸出
- 優先編碼確保最高優先級輸入 (D7) 首先被編碼
- 使能輸入 (EI) 和使能輸出 (EO) 用於級聯多個器件
- 組信號輸出 (GS) 指示是否有任何輸入有效
- TTL 兼容輸入和輸出
- 標準 16 引腳 PDIP 封裝,便於原型設計
- 寬工作溫度範圍:0°C 至 70°C
典型應用場景
- 數字數據處理系統(例如 5G 基站中的中斷控制器)
- 汽車儀表盤控制單元,用於輸入多路復用
- 工業自動化中的傳感器優先級編碼
- 消費電子產品(例如遙控接收器)
- 微控制器系統中的存儲器地址解碼
環球供應鏈與批發合作夥伴方案
在 Jasin Chip,我們為 SN74148N 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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