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PCA9601D Datasheet(PDF) 1 Page - NXP Semiconductors |
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PCA9601D Datasheet(HTML) 1 Page - NXP Semiconductors |
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1 / 32 page  1. General description The PCA9601 is designed to isolate I2C-bus capacitance, allowing long buses to be driven in point-to-point or multipoint applications of up to 4000 pF. The PCA9601 is a higher-speed version of the P82B96 and a higher drive version of the PCA9600 that allows many more Fast-mode Plus (Fm+) slaves on remote daughter cards in applications with temperature range of 0 °C to 85 °C. It creates a non-latching, bidirectional, logic interface between a normal I2C-bus and a range of other higher capacitance or different voltage bus configurations. It can operate at speeds up to at least 1 MHz, and the high drive side is compatible with the Fast-mode Plus specifications. The PCA9601 features temperature-stabilized logic voltage levels at its SX/SY interface making it suitable for interfacing with buses that have non I2C-bus-compliant logic levels such as SMBus, PMBus, or with microprocessors that use those same TTL logic levels. 15 mA drive capability over 0 °C to 85 °C at SX/SY allows driving a 5 V Fm+ bus with 470 pF loading. The separation of the bidirectional I2C-bus signals into unidirectional TX and RX signals enables the SDA and SCL signals to be transmitted via balanced transmission lines (twisted pairs), or with galvanic isolation using opto or magnetic coupling. The TX and RX signals may be connected together to provide a normal bidirectional signal. 2. Features and benefits Bidirectional data transfer of I2C-bus signals 15 mA SX/SY sink capability yields 5 V Fm+ bus rise time with 470 pF loads Isolates capacitance allowing > 400 pF on SX/SY side and 4000 pF on TX/TY side 1 MHz operation on up to 20 meters of wire (see AN10658) Supply voltage range of 2.5 V to 15 V with I2C-bus logic levels on SX/SY side independent of supply voltage Splits I2C-bus signal into pairs of forward/reverse TX/RX, TY/RY signals for interface with opto-electrical isolators and similar devices that need unidirectional input and output signal paths Low power supply current ESD protection exceeds 4500 V HBM per JESD22-A114, and 1400 V CDM per JESD22-C101 Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA Packages offered: SO8 and TSSOP8 (MSOP8) PCA9601 Dual bidirectional bus buffer Rev. 2 — 6 May 2011 Product data sheet |
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