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Product Overview
The SNJ54HC645FK is a high-speed octal bus transceiver from Texas Instruments, designed for bidirectional asynchronous communication between two data buses. It features non-inverting 3-state outputs and operates over a wide voltage range of 2V to 6V. The device is ideal for driving heavily loaded buses with up to 8mA output current per channel. Housed in a ceramic flatpack (FK) package, it is specified for the military temperature range (-55°C to +125°C), ensuring reliable performance in harsh environments.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
2V to 6V |
| Input Voltage (VI) |
0V to VCC |
| Output Current (IO) |
±8 mA |
| Propagation Delay (tpd) |
12 ns (max at 5V, 50pF) |
| Operating Temperature |
-55°C to +125°C |
| Package |
20-pin Ceramic Flatpack (FK) |
| Logic Family |
HC |
| Number of Bits |
8 |
| Direction Control |
DIR pin |
| Output Enable |
Active-low OE |
Key Features
- Bidirectional bus transceiver with 3-state outputs
- Wide operating voltage range: 2V to 6V
- High noise immunity: typical 30% of VCC
- Low power consumption: 80 µA max ICC
- Military temperature range: -55°C to +125°C
- Compatible with TTL levels
- ESD protection exceeds 2000V per MIL-STD-883
Target Applications
- 5G base station control boards for data bus isolation
- Avionics systems requiring bidirectional data transfer
- Industrial automation PLC modules
- Military communication equipment
- Automotive dashboard display interfaces (if extended temp range)
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
SNJ54HC645FK. 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
SNJ54HC645FK 是德州儀器出品的高速八位元匯流排收發器,專為兩個數據匯流排之間的雙向非同步通訊設計。它具有同相三態輸出,工作電壓範圍寬(2V 至 6V),每通道可提供高達 8mA 的輸出電流,適合驅動重負載匯流排。採用陶瓷扁平封裝 (FK),軍用溫度範圍(-55°C 至 +125°C),確保在惡劣環境下的可靠性能。
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 |
| 輸出電流 (IO) |
±8 mA |
| 傳播延遲 (tpd) |
12 ns(最大值,5V,50pF) |
| 工作溫度 |
-55°C 至 +125°C |
| 封裝 |
20 腳陶瓷扁平封裝 (FK) |
| 邏輯系列 |
HC |
| 位元數 |
8 |
| 方向控制 |
DIR 引腳 |
| 輸出使能 |
低電平有效 OE |
核心特性
- 雙向匯流排收發器,三態輸出
- 寬工作電壓範圍:2V 至 6V
- 高抗噪能力:典型值 VCC 的 30%
- 低功耗:最大 ICC 80 µA
- 軍用溫度範圍:-55°C 至 +125°C
- 與 TTL 電平兼容
- ESD 保護超過 2000V(符合 MIL-STD-883)
典型應用場景
- 5G 基站控制板的數據匯流排隔離
- 需要雙向數據傳輸的航空電子系統
- 工業自動化 PLC 模塊
- 軍用通信設備
- 汽車儀表盤顯示接口(若擴展溫度範圍)
環球供應鏈與批發合作夥伴方案
在 Jasin Chip,我們為 SNJ54HC645FK 提供全面的供應鏈與批發解決方案。
我們的核心優勢包括:
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