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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LTC4312 датащи(PDF) 1 Page - Linear Technology |
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LTC4312 датащи(HTML) 1 Page - Linear Technology |
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1 / 20 page  LTC4314 1 4314f TYPICAL APPLICATION DESCRIPTION Pin-Selectable, 4-Channel, 2-Wire Multiplexer with Bus Buffers The LTC®4314 is a hot-swappable 4-channel 2-wire bus multiplexer that allows one upstream bus to connect to any combination of downstream busses or channels. An individual enable pin controls each connection. The LTC4314 provides bidirectional buffering, keeping the up- stream bus capacitance isolated from the downstream bus capacitances. The high noise margin allows the LTC4314 to be interoperable with I2C devices that drive a high VOL (> 0.4V). The LTC4314 supports level translation between 1.5V, 1.8V, 2.5V, 3.3V and 5V busses. The hot-swappable nature of the LTC4314 allows I/O card insertion into, and removal from, a live backplane without corruption of the data and clock busses. If both data and clock are not simultaneously high at least once in 45ms and DISCEN is high, a FAULT signal is generated indicating a stuck bus low condition, the input is disconnected from all enabled output channels, and up to 16 clocks are generated on the enabled downstream busses. A three state ACC pin enables input and output side rise time accelerators of varying strengths and sets the VIL,RISING voltage. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Hot Swap is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 6356140, 6650174, 7032051, 7478286. FEATURES APPLICATIONS n 1:4 Multiplexer/Switch for 2-Wire Bus n Bidirectional Buffer for SDA and SCL Lines n High Noise Margin with VIL = 0.3•VCC n ENABLE Pins Connect SDA and SCL Lines n Selectable Rise Time Accelerator Current and Activation Voltage n Level Shift 1.5V, 1.8V, 2.5V, 3.3V and 5V Busses n Prevents SDA and SCL Corruption During Live Board Insertion and Removal from Backplane n Stuck Bus Disconnect and Recovery n Compatible with I2C, I2C Fast Mode and SMBus n ±4kV Human Body Model (HBM) ESD Ruggedness n 20-Lead SSOP and 3mm × 4mm QFN Packages n Telecommunications Systems Including ATCA n Address Expansion n Level Translator n Capacitance Buffers/Bus Extender n Live Board Insertion n PMBus Rising Edge from Asserted Low with Level Translation LTC4314 GND VCC VCC2 4314 TA01a SCLOUT1 SDAOUT1 SCLOUT4 SDAOUT4 SCLOUT1 SDAOUT1 SCLOUT4 SDAOUT4 SCLIN SDAIN ENABLE1 ENABLE2 ENABLE3 ENABLE4 ACC DISCEN FAULT SCLIN SDAIN ENABLE1 ENABLE2 ENABLE3 ENABLE4 3.3V 10k FAULT 10k 10k 0.01μF 3.3V 3.3V 10k 10k 5V 10k 10k 0.01μF 200ns/DIV 4314 TA01b CSCLOUT1 + CSCLOUT4 = 100pF CSCLIN = 50pF SCLOUT4 SCLOUT1 SCLIN 0V 6V 5V 3.3V |
Аналогичный номер детали - LTC4312 |
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Аналогичное описание - LTC4312 |
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ссылки URL |
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