SN74HCT138D TI Decoder/Demultiplexer | 16-SOIC | 3-to-8 Line, TTL Compatible

Product Overview

The SN74HCT138D is a high-performance 3-to-8 line decoder/demultiplexer from Texas Instruments, designed for digital logic applications requiring low power consumption and high speed. Housed in a compact 16-SOIC package, this device features three enable inputs for flexible cascading and is TTL input compatible, making it ideal for interfacing with legacy logic families. It operates over a wide voltage range of 4.5V to 5.5V and offers balanced propagation delays and high noise immunity.

Detailed Technical Specifications

Key Features

• 3-to-8 line decoder/demultiplexer with active low outputs
• Three enable inputs (G1, G2A, G2B) for easy cascading
• TTL input compatible (VIH = 2V, VIL = 0.8V)
• Low power consumption: 80 µA max ICC
• Balanced propagation delays: tPLH = tPHL
• High noise immunity: VNH = VNL = 28% of VCC
• Wide operating voltage range: 4.5V to 5.5V
• Industrial temperature range: -40°C to +85°C
• Pb-free and RoHS compliant

Target Applications

The SN74HCT138D is widely used in digital systems requiring address decoding, data routing, and signal demultiplexing. Specific applications include:

• Memory address decoding in microcontrollers and FPGAs (e.g., STM32, Xilinx Spartan-6)
• Control logic in 5G base station power management units
• Display driver selection in automotive dashboards (e.g., TFT-LCD panels)
• I/O expansion in industrial PLCs (e.g., Siemens S7-1200)
• Data acquisition systems for sensor arrays

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for SN74HCT138D. Our core advantages include:

• 24/7 Global Customer Support: Professional team providing instant quotes and technical support worldwide.
• In-stock Inventory, Same-day Shipping: We maintain localized stock; orders confirmed before 4 PM are shipped the same day.
• HK-SZ Synergy, Flexible Settlement: Direct global shipping from Shenzhen with support for HK bank transfers and multi-currency.
• Escrow Secured Transactions: We support Escrow.com for secure transactions, ensuring peace of mind for batch orders.
• 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.

• 100% Original & Authentic: All components are guaranteed to be authentic with strict quality control.
• RoHS Compliant: All electronic components comply with international environmental and safety standards.
• Original Factory Packaging: We maintain original factory packaging and seals to ensure ESD protection and physical integrity.

產品概述

SN74HCT138D 是德州儀器（TI）推出的一款高性能3線轉8線解碼器/多路分配器，專為需要低功耗和高速度的數字邏輯應用而設計。採用緊湊的16-SOIC封裝，具有三個使能輸入，便於靈活級聯，並兼容TTL輸入電平，非常適合與傳統邏輯系列接口。工作電壓範圍為4.5V至5.5V，具有平衡的傳播延遲和高抗噪性。

詳細技術參數

核心特性

• 3線轉8線解碼器/多路分配器，低電平有效輸出
• 三個使能輸入（G1、G2A、G2B），便於級聯
• TTL輸入兼容（VIH = 2V，VIL = 0.8V）
• 低功耗：最大 ICC 80 µA
• 平衡傳播延遲：tPLH = tPHL
• 高抗噪性：VNH = VNL = 28% VCC
• 寬工作電壓範圍：4.5V 至 5.5V
• 工業溫度範圍：-40°C 至 +85°C
• 無鉛且符合RoHS標準

典型應用場景

SN74HCT138D 廣泛應用於需要地址解碼、數據路由和信號多路分配的數字系統中。具體應用包括：

• 微控制器和FPGA（如STM32、Xilinx Spartan-6）中的存儲器地址解碼
• 5G基站電源管理單元中的控制邏輯
• 汽車儀表盤（如TFT-LCD面板）中的顯示驅動選擇
• 工業PLC（如西門子S7-1200）中的I/O擴展
• 傳感器陣列的數據採集系統

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 SN74HCT138D 提供全面的供應鏈與批發解決方案。 我們的核心優勢包括：

• 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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品質保證與合規

Jasin Chip 承諾所有出貨產品均為原廠正貨，具備完善的品質保證及產品可追溯性。

• 100% 原廠正貨：承諾所有供應零件均為原裝現貨，品質嚴格把關，來源清晰可追溯。
• 符合 RoHS 認證：所有電子元器件均符合國際環保標準及相關安全認證。
• 原廠封裝保護：嚴格保留原廠原始包裝及封條，確保物流過程中的靜電防護 (ESD) 與物理安全。

以上產品均為原廠正貨，提供 BOM 配單及現貨庫存支援，歡迎查詢。

HONG KONG JASIN SEMICONDUCTOR TECHNOLOGY COMPANY LIMITED
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