SN74HC139PWT TI Decoder/Demultiplexer | 16-TSSOP | 2-to-4 Line, Dual

Product Overview

The SN74HC139PWT from Texas Instruments is a high-speed dual 2-to-4 line decoder/demultiplexer fabricated using advanced silicon-gate CMOS technology. It is designed for use in memory decoding, data routing, and digital logic applications where low power consumption and high noise immunity are required. The device features two independent decoders, each accepting two binary inputs (A0, A1) and providing four mutually exclusive active-low outputs (Y0–Y3). An active-low enable input (G) allows for cascading and expansion. The SN74HC139PWT is offered in a compact 16-pin TSSOP package, making it suitable for space-constrained designs.

Detailed Technical Specifications

Key Features

• Dual 2-to-4 line decoder/demultiplexer with active-low outputs
• Wide supply voltage range: 2 V to 6 V
• High noise immunity: typical VNIH = VNIL = 28% of VCC
• Low power consumption: ICC typically 4 µA
• Balanced propagation delays: tPLH ≈ tPHL
• Inputs accept voltages up to 6 V
• Outputs can 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 display systems
• Address decoding in industrial PLC modules
• Demultiplexing in IoT sensor hubs
• Logic expansion in FPGA configuration circuits

Global Supply Chain & Wholesale Solutions

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產品概述

SN74HC139PWT 是德州儀器 (TI) 生產的高速雙路 2 線至 4 線解碼器/多路分配器，採用先進的矽柵 CMOS 技術製造。該器件適用於存儲器解碼、數據路由和數字邏輯應用，具有低功耗和高抗噪聲能力。每個解碼器接受兩個二進制輸入 (A0, A1)，並提供四個互斥的低電平有效輸出 (Y0–Y3)。低電平有效的使能輸入 (G) 便於級聯和擴展。SN74HC139PWT 採用緊湊的 16 引腳 TSSOP 封裝，適合空間受限的設計。

詳細技術參數

核心特性

• 雙路 2 線至 4 線解碼器/多路分配器，低電平有效輸出
• 寬電源電壓範圍：2 V 至 6 V
• 高抗噪聲能力：典型 VNIH = VNIL = 28% VCC
• 低功耗：ICC 典型值 4 µA
• 平衡的傳播延遲：tPLH ≈ tPHL
• 輸入可承受高達 6 V 的電壓
• 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
• 汽車儀表盤顯示系統中的數據路由
• 工業 PLC 模塊中的地址解碼
• 物聯網傳感器集線器中的多路分配
• FPGA 配置電路中的邏輯擴展

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