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Product Overview
The SN74HC245NSR is a high-performance octal bus transceiver from Texas Instruments, designed for bidirectional asynchronous communication between data buses. It features 8-bit non-inverting buffers with 3-state outputs, enabling efficient data flow control in digital systems. Housed in a 20-pin SO package, this device operates over a wide supply voltage range of 2V to 6V, making it suitable for a variety of logic-level applications. The SN74HC245NSR is ideal for driving bus lines or buffering memory address registers, offering high noise immunity and low power consumption typical of HC CMOS technology.
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) |
-6 mA at VCC = 4.5V |
| Low-Level Output Current (IOL) |
6 mA at VCC = 4.5V |
| Propagation Delay (tpd) |
12 ns typical at VCC = 5V, CL = 50 pF |
| Input Capacitance (Ci) |
3 pF typical |
| Power Dissipation (PD) |
500 mW |
| Operating Temperature Range |
-40°C to +85°C |
| Package |
20-SO (NSR suffix) |
Key Features
- 8-bit bidirectional bus transceiver with non-inverting outputs
- 3-state outputs for bus-oriented applications
- Wide operating voltage range: 2V to 6V
- High noise immunity: typical VNH = 0.7 VCC, VNL = 0.3 VCC
- Low power consumption: ICC max 80 µA
- Inputs accept voltages up to VCC
- Outputs can be connected to other open-drain or 3-state outputs
- ESD protection exceeds 2000V per MIL-STD-883, Method 3015
Target Applications
- 5G base station control logic: data bus isolation between baseband and RF modules
- Automotive dashboard display: buffering data from MCU to LCD driver
- Industrial PLC I/O modules: bidirectional communication between backplane and peripheral cards
- Consumer electronics: smart home hub data routing between sensors and processor
- Telecommunications: line card interface for TDM bus
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
SN74HC245NSR. 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
SN74HC245NSR 是德州儀器生產的高性能八路總線收發器,專為雙向異步數據總線通信設計。它包含8位非反相緩衝器,具有三態輸出,可有效控制數字系統中的數據流。該器件採用20引腳SO封裝,在2V至6V的寬電源電壓範圍內工作,適用於各種邏輯電平應用。SN74HC245NSR 非常適合驅動總線線路或緩衝存儲器地址寄存器,具有HC CMOS技術典型的高噪聲容限和低功耗特性。
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) |
-6 mA (VCC = 4.5V 時) |
| 低電平輸出電流 (IOL) |
6 mA (VCC = 4.5V 時) |
| 傳播延遲 (tpd) |
典型值 12 ns (VCC = 5V, CL = 50 pF) |
| 輸入電容 (Ci) |
典型值 3 pF |
| 功耗 (PD) |
500 mW |
| 工作溫度範圍 |
-40°C 至 +85°C |
| 封裝 |
20-SO (NSR 後綴) |
核心特性
- 8位雙向總線收發器,非反相輸出
- 三態輸出,適用於總線應用
- 寬工作電壓範圍:2V 至 6V
- 高噪聲容限:典型 VNH = 0.7 VCC, VNL = 0.3 VCC
- 低功耗:ICC 最大值 80 µA
- 輸入可接受高達 VCC 的電壓
- 輸出可與其他開漏或三態輸出連接
- ESD 保護超過 2000V (MIL-STD-883, Method 3015)
典型應用場景
- 5G基站控制邏輯:基帶與射頻模塊之間的數據總線隔離
- 汽車儀表盤顯示:MCU 到 LCD 驅動器的數據緩衝
- 工業PLC I/O模塊:背板與外設卡之間的雙向通信
- 消費電子:智能家居中樞傳感器與處理器之間的數據路由
- 電信:線路卡接口用於 TDM 總線
環球供應鏈與批發合作夥伴方案
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