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Product Overview
The SN74HC42N from Texas Instruments is a high-speed CMOS BCD-to-decimal decoder/demultiplexer. It converts a 4-bit BCD input into one of ten mutually exclusive active-low outputs. The device is ideal for driving 7-segment displays, memory address decoding, and data routing in digital systems. Housed in a 16-pin PDIP package, it operates over a wide voltage range of 2V to 6V, making it suitable for battery-powered and industrial applications.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
2V to 6V |
| Input Voltage (VI) |
0V to VCC |
| Output Voltage (VO) |
0V to VCC |
| High-Level Output Current (IOH) |
-4 mA (at VCC=4.5V) |
| Low-Level Output Current (IOL) |
4 mA (at VCC=4.5V) |
| Propagation Delay (tpd) |
15 ns (typical at VCC=4.5V, CL=50pF) |
| Power Dissipation (PD) |
500 mW |
| Operating Temperature |
-40°C to +85°C |
| Package |
16-PDIP |
Key Features
- BCD-to-decimal decoding with 10 mutually exclusive outputs
- Active-low outputs for direct drive of LEDs or relays
- Wide supply voltage range: 2V to 6V
- High noise immunity: typical 30% of VCC
- Low power consumption: 80 µA max at 25°C
- Standard CMOS outputs with 4 mA drive capability
- Compatible with TTL logic levels
- ESD protection exceeds 2000V per MIL-STD-883
Target Applications
- 5G base station control logic: address decoding for FPGA configuration
- Automotive dashboard display: driving 7-segment indicators for speed and fuel
- Industrial PLC: I/O module address selection
- Medical equipment: patient monitor numeric display
- Consumer electronics: remote control keypad encoding
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
SN74HC42N. 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
SN74HC42N 是德州儀器出品的高速 CMOS BCD 至十進制解碼器/多路分配器。它將 4 位 BCD 輸入轉換為十個互斥的低電平有效輸出。該器件非常適合驅動 7 段顯示器、存儲器地址解碼和數字系統中的數據路由。採用 16 引腳 PDIP 封裝,工作電壓範圍為 2V 至 6V,適用於電池供電和工業應用。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 (VCC) |
2V 至 6V |
| 輸入電壓 (VI) |
0V 至 VCC |
| 輸出電壓 (VO) |
0V 至 VCC |
| 高電平輸出電流 (IOH) |
-4 mA (VCC=4.5V 時) |
| 低電平輸出電流 (IOL) |
4 mA (VCC=4.5V 時) |
| 傳播延遲 (tpd) |
15 ns (典型值,VCC=4.5V, CL=50pF) |
| 功耗 (PD) |
500 mW |
| 工作溫度 |
-40°C 至 +85°C |
| 封裝 |
16-PDIP |
核心特性
- BCD 至十進制解碼,提供 10 個互斥輸出
- 低電平有效輸出,可直接驅動 LED 或繼電器
- 寬電源電壓範圍:2V 至 6V
- 高抗噪能力:典型值為 VCC 的 30%
- 低功耗:25°C 時最大 80 µA
- 標準 CMOS 輸出,驅動能力 4 mA
- 與 TTL 邏輯電平兼容
- ESD 保護超過 2000V(MIL-STD-883)
典型應用場景
- 5G 基站控制邏輯:FPGA 配置的地址解碼
- 汽車儀表盤顯示:驅動速度和燃油的 7 段指示器
- 工業 PLC:I/O 模塊地址選擇
- 醫療設備:病人監護儀數字顯示
- 消費電子:遙控器鍵盤編碼
環球供應鏈與批發合作夥伴方案
在 Jasin Chip,我們為 SN74HC42N 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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