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Product Overview
The CD74HCT238PWR is a high-speed CMOS 3-to-8 line decoder/demultiplexer from Texas Instruments. It is designed for memory decoding and data routing applications, featuring low power consumption and high noise immunity. The device is fabricated with silicon gate technology, combining the speed of LSTTL with the low power of CMOS. It operates from a 4.5V to 5.5V supply and is available in a 16-pin TSSOP package.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
4.5V to 5.5V |
| Input Voltage (VI) |
0V to VCC |
| Output Voltage (VO) |
0V to VCC |
| High-Level Input Voltage (VIH) |
2V (min) |
| Low-Level Input Voltage (VIL) |
0.8V (max) |
| High-Level Output Current (IOH) |
-4mA (max) |
| Low-Level Output Current (IOL) |
4mA (max) |
| Propagation Delay (tpd) |
23ns (typ) at VCC=5V, CL=50pF |
| Power Dissipation (PD) |
500mW (max) |
| Operating Temperature |
-55°C to +125°C |
| Package |
16-TSSOP |
Key Features
- 3-to-8 line decoder/demultiplexer with active high outputs
- High speed: typical propagation delay of 23ns at 5V
- Low power consumption: 80µA max ICC
- Wide operating voltage range: 4.5V to 5.5V
- High noise immunity: typical VNH = 0.7VCC
- Balanced propagation delays: tPLH and tPHL
- Inputs are TTL voltage compatible
- Outputs drive up to 10 LSTTL loads
- Available in 16-TSSOP package for space-saving designs
Target Applications
- Memory decoding in 5G base station control boards
- Data routing in automotive dashboard displays
- Address decoding in industrial PLC systems
- Demultiplexing in test and measurement equipment
- Signal routing in medical imaging devices
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
CD74HCT238PWR. Our core advantages include:
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24/7 Global Customer Support: Professional team providing instant
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Quality Assurance & Compliance
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with full quality assurance and traceability.
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be authentic with strict quality control.
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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
CD74HCT238PWR 是德州儀器的一款高速 CMOS 3 線轉 8 線解碼器/多路分配器。它專為存儲器解碼和數據路由應用而設計,具有低功耗和高抗噪聲能力。該器件採用硅柵極技術製造,結合了 LSTTL 的速度和 CMOS 的低功耗。它可在 4.5V 至 5.5V 電源下工作,採用 16 引腳 TSSOP 封裝。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 (VCC) |
4.5V 至 5.5V |
| 輸入電壓 (VI) |
0V 至 VCC |
| 輸出電壓 (VO) |
0V 至 VCC |
| 高電平輸入電壓 (VIH) |
2V (最小值) |
| 低電平輸入電壓 (VIL) |
0.8V (最大值) |
| 高電平輸出電流 (IOH) |
-4mA (最大值) |
| 低電平輸出電流 (IOL) |
4mA (最大值) |
| 傳播延遲 (tpd) |
23ns (典型值) 在 VCC=5V, CL=50pF 時 |
| 功耗 (PD) |
500mW (最大值) |
| 工作溫度 |
-55°C 至 +125°C |
| 封裝 |
16-TSSOP |
核心特性
- 3 線轉 8 線解碼器/多路分配器,高電平有效輸出
- 高速:典型傳播延遲 23ns (5V)
- 低功耗:最大 ICC 80µA
- 寬工作電壓範圍:4.5V 至 5.5V
- 高抗噪聲能力:典型 VNH = 0.7VCC
- 平衡的傳播延遲:tPLH 和 tPHL
- 輸入與 TTL 電壓兼容
- 輸出可驅動多達 10 個 LSTTL 負載
- 採用 16-TSSOP 封裝,節省空間
典型應用場景
- 5G 基站控制板中的存儲器解碼
- 汽車儀表盤顯示中的數據路由
- 工業 PLC 系統中的地址解碼
- 測試與測量設備中的多路分配
- 醫療成像設備中的信號路由
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