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Product Overview
The SN74AHC238BQBR from Texas Instruments is a high-speed 3-to-8 line decoder/demultiplexer designed for 2V to 5.5V VCC operation. Housed in a compact 16-WQFN (2.5x3.5mm) package, it offers low power consumption and high noise immunity, making it ideal for modern digital systems. This device decodes three binary address inputs (A0, A1, A2) into eight mutually exclusive active-low outputs (Y0–Y7). It also features three enable inputs (G1, G2A, G2B) for flexible control, simplifying system design.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
2V to 5.5V |
| Input Voltage (VI) |
0V to 5.5V |
| Output Voltage (VO) |
0V to VCC |
| High-Level Input Voltage (VIH) |
0.7 × VCC (min) |
| Low-Level Input Voltage (VIL) |
0.3 × VCC (max) |
| High-Level Output Current (IOH) |
-8 mA |
| Low-Level Output Current (IOL) |
8 mA |
| Propagation Delay (tpd) |
7.5 ns (typ) at 5V |
| Operating Temperature |
-40°C to +125°C |
| Package |
16-WQFN (2.5x3.5mm) |
Key Features
- Wide operating voltage range: 2V to 5.5V
- High noise immunity: VIH = 0.7 × VCC, VIL = 0.3 × VCC
- Low power consumption: ICC typically 4 µA
- High speed: tpd = 7.5 ns at 5V
- Three enable inputs for easy expansion
- Active-low outputs for direct interface with logic
- Compact 16-WQFN package saves board space
- ESD protection exceeds 2000V HBM
Target Applications
- 5G base station control logic: Address decoding for multiple RF modules
- Automotive dashboard displays: Selecting display segments or indicators
- Industrial automation: Multiplexing sensor inputs in PLC systems
- Consumer electronics: Memory address decoding in set-top boxes
- Medical devices: Channel selection in patient monitoring systems
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
SN74AHC238BQBR. 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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Shenzhen with support for HK bank transfers and multi-currency.
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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
SN74AHC238BQBR 是德州儀器(TI)推出的高速3線-8線解碼器/多路分配器,支持2V至5.5V的電源電壓。採用緊湊的16-WQFN(2.5x3.5mm)封裝,具有低功耗和高抗噪性,適用於現代數字系統。該器件將三個二進制地址輸入(A0、A1、A2)解碼為八個互斥的低電平有效輸出(Y0–Y7),並配備三個使能輸入(G1、G2A、G2B),提供靈活控制,簡化系統設計。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 (VCC) |
2V 至 5.5V |
| 輸入電壓 (VI) |
0V 至 5.5V |
| 輸出電壓 (VO) |
0V 至 VCC |
| 高電平輸入電壓 (VIH) |
0.7 × VCC(最小值) |
| 低電平輸入電壓 (VIL) |
0.3 × VCC(最大值) |
| 高電平輸出電流 (IOH) |
-8 mA |
| 低電平輸出電流 (IOL) |
8 mA |
| 傳播延遲 (tpd) |
7.5 ns(典型值,5V時) |
| 工作溫度 |
-40°C 至 +125°C |
| 封裝 |
16-WQFN(2.5x3.5mm) |
核心特性
- 寬工作電壓範圍:2V 至 5.5V
- 高抗噪性:VIH = 0.7 × VCC,VIL = 0.3 × VCC
- 低功耗:ICC 典型值 4 µA
- 高速:tpd = 7.5 ns(5V時)
- 三個使能輸入,便於擴展
- 低電平有效輸出,可直接與邏輯電路接口
- 緊湊的16-WQFN封裝,節省電路板空間
- ESD保護超過2000V HBM
典型應用場景
- 5G基站控制邏輯:多個射頻模塊的地址解碼
- 汽車儀表盤顯示:選擇顯示段或指示燈
- 工業自動化:PLC系統中的傳感器輸入多路復用
- 消費電子:機頂盒中的存儲器地址解碼
- 醫療設備:病人監護系統中的通道選擇
環球供應鏈與批發合作夥伴方案
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