SN75C3221DB TI RS-232 Transceiver | 3-5.5V | 1 Driver, 1 Receiver, 250kbps

Product Overview

The SN75C3221DB from Texas Instruments is a single-channel RS-232 line driver/receiver designed for serial communication in portable and space-constrained applications. It operates from a single 3V to 5.5V supply, featuring a proprietary low-dropout output stage that delivers true RS-232 performance with a 5V supply. The device includes one driver and one receiver, supporting data rates up to 250 kbps. Its enhanced ESD protection (HBM ±15 kV) ensures robust operation in harsh environments. The SN75C3221DB is available in a small-outline DB package (SSOP-16), making it ideal for compact designs.

Detailed Technical Specifications

Key Features

• Single 3V to 5.5V supply operation
• Low power consumption: 1 μA shutdown current
• ESD protection: ±15 kV HBM on I/O pins
• Data rate up to 250 kbps
• Meets TIA/EIA-232-F standards
• Small SSOP-16 package for space-saving
• Auto-powerdown feature reduces power when not in use

Target Applications

• Portable devices: smartphones, tablets, handheld terminals
• Industrial control: PLCs, HMI panels, sensor interfaces
• Networking equipment: 5G base stations, routers, switches
• Automotive: infotainment systems, dashboard displays, telematics
• Medical devices: patient monitors, diagnostic equipment
• Point-of-sale (POS) terminals and barcode scanners

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for SN75C3221DB. 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

SN75C3221DB 是德州儀器（TI）推出的單通道 RS-232 線路驅動器/接收器，專為便攜式和空間受限的應用設計。它可在 3V 至 5.5V 的單電源下工作，採用專有的低壓降輸出級，在 5V 電源下實現真正的 RS-232 性能。該器件包含一個驅動器和一個接收器，支持高達 250 kbps 的數據速率。增強型 ESD 保護（HBM ±15 kV）確保在惡劣環境中的穩健運行。SN75C3221DB 採用小型 SSOP-16 封裝，非常適合緊湊型設計。

詳細技術參數

核心特性

• 單電源 3V 至 5.5V 工作
• 低功耗：關斷電流 1 μA
• ESD 保護：I/O 引腳 ±15 kV HBM
• 數據速率高達 250 kbps
• 符合 TIA/EIA-232-F 標準
• 小型 SSOP-16 封裝，節省空間
• 自動關斷功能，未使用時降低功耗

典型應用場景

• 便攜設備：智能手機、平板電腦、手持終端
• 工業控制：PLC、HMI 面板、傳感器接口
• 網絡設備：5G 基站、路由器、交換機
• 汽車電子：信息娛樂系統、儀表盤顯示、車載通信
• 醫療設備：病人監護儀、診斷設備
• 銷售點終端（POS）和條碼掃描器

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 SN75C3221DB 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。
• 深港聯動，結算靈活：深圳直發全球，物流高效可靠；支援香港銀行戶口轉賬及多幣種結算。
• 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。
• 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
Trusted Partner for Automotive, Industrial, and Hard-to-find Components.
WhatsApp: +852 5209 9691 | Email: [email protected]