SN74LS257BDR TI Multiplexer | 16-SOIC | 4-bit, 2-input, 3-state

Product Overview

The SN74LS257BDR is a high-performance 4-bit 2-input multiplexer with 3-state outputs from Texas Instruments. It features Schottky-clamped transistors for high speed and low power consumption. The device selects one of two 4-bit data sources (A or B) based on the select input (S) and provides the selected data to the outputs. The outputs are in the high-impedance state when the output enable (OE) input is high, allowing for bus-oriented applications. Housed in a 16-pin SOIC package, it is ideal for space-constrained designs.

Detailed Technical Specifications

Key Features

• 4-bit 2-input multiplexer with 3-state outputs
• Schottky-clamped transistors for high speed
• Low power consumption: 45 mW typical
• 3-state outputs for bus-oriented systems
• Input clamp diodes limit high-speed termination effects
• Compatible with TTL logic levels
• Wide operating temperature range: 0°C to 70°C

Target Applications

• Data routing in 5G base station control boards
• Signal selection in automotive dashboard displays
• Bus multiplexing in industrial PLC systems
• Memory address multiplexing in embedded systems
• Peripheral selection in microcontroller-based designs

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for SN74LS257BDR. 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

SN74LS257BDR 是德州儀器（TI）生產的高性能4位2輸入多路復用器，具有三態輸出。它採用肖特基箝位晶體管，實現高速和低功耗。器件根據選擇輸入（S）選擇兩個4位數據源（A或B）之一，並將選中的數據提供到輸出端。當輸出使能（OE）輸入為高電平時，輸出處於高阻抗狀態，適用於總線應用。採用16引腳SOIC封裝，適合空間受限的設計。

詳細技術參數

核心特性

• 4位2輸入多路復用器，帶三態輸出
• 肖特基箝位晶體管，實現高速
• 低功耗：典型值 45 mW
• 三態輸出，適用於總線系統
• 輸入箝位二極管限制高速終端效應
• 與TTL邏輯電平兼容
• 寬工作溫度範圍：0°C 至 70°C

典型應用場景

• 5G基站控制板中的數據路由
• 汽車儀表盤顯示中的信號選擇
• 工業PLC系統中的總線多路復用
• 嵌入式系統中的存儲器地址多路復用
• 微控制器設計中的外設選擇

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 SN74LS257BDR 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。
• 現貨庫存，即日發貨：確保現貨充足。下午 4 點前確認訂單，即可安排當天寄出。
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• Escrow 擔保交易：支援 Escrow.com 平台交易，保障買賣雙方權益，小批量訂單亦可安心在線下單。
• BOM 配單與樣板服務：提供樣板測試及認證支援。專注一站式 BOM 配套及緊急缺料採購服務。

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。
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• 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
Trusted Partner for Automotive, Industrial, and Hard-to-find Components.
WhatsApp: +852 5209 9691 | Email: [email protected]