產品說明0
CJMCU-245 SN74LVC4245A LJ245A 八路 匯流排收發器 移位器 開發板
CJMCU-245 SN74LVC4245A LJ245A 八路匯流排收發器移位器開發板
用途：CJMCU-245一個典型的雙電源供電的雙向收發器，透過DIR管腳控制傳輸方向。
收發器:收發器是訊號轉換的一種裝置，通常是指光纖收發器。 光纖收發器的出現，將雙絞線電訊號和光訊號進行相互轉換，確保了資料包在兩個網路間順暢傳輸，同時它將網路的傳輸距離極限從銅線的100公尺擴展到100公里（單模光纖）。
This 8-bit (octal) noninverting bus transceiver contains two separate supply rails; B port has V CCB , which is set at 3.3 V, and A port has V CCA , which is set at 5 V. This allows for port has V CCA , which is set at 5 V. Thils allows for transllation, 3. versa.
The SN74LVC4245A device is designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at ables in the B bus the A bus, depending on the logic level at abledir ( can be used to disable the device so the buses are effectively isolated. The control circuitry (DIR, OE ) is powered by V CCA .
The SN74LVC4245A device terminal out allows the designer to switch to a normal all-3.3-V or all-5-V 20-terminal SN74LVC4245 device without board re-layout. The designer uses the data paths for pins 2–11 and 14–23 of the SN74LVC4245A device to align with the conventional '245 terminal out.
Bidirectional Voltage Translator
- 5.5 V on A Port and 2.7 V to 3.6 V on B Port
- Control Inputs V IH /V IL Levels Are
- Referenced to V CCA Voltage
- Latch-Up Performance Exceeds 250 mA
- Per JESD 17
- ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model
- 200-V Machine Model
- 1000-V Charged-Device Model
晶片手冊地址：
http://www.ti.com.cn/product/cn/SN74LVC4245A/description
