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Octal Bus Transceiver and 3.3V to 5V Shifter with 3-State Outputs
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NCA84245 is an 8-bit bus transceiver with two separate configurable power-supply. The A port tracks VCCA and B port tracks VCCB, so it supports bidirectional translation between the two voltage ranges. NCA84245 is mainly used for asynchronous communication between two data buses. The device provides a directioncontrol (DIR) input for transmitting data bidirectionally. When DIR is logic high, it transmits data from A to B, and from B to A when DIR is logic low. The output-enable /OE tracks VCCA and is low active, When /OE is high, the outputs are in the high-impedance state. During power up and power down, /OE should be tied to VCC through a pull-up resistor to ensure the high impedance state. Each channel of NCA84245 supports maximum 24 mA current drive. All unused inputs must be held at VCC or GND to prevent excess supply current.
Product Features
• Input: TTL level compatible
• Power supply voltage:
VCCA: 4.5V-5.5V
VCCB: 2.7V-3.6V
• Input pins can withstand up to 5.5V inputs
• Chip-level ESD: HBM: ±4kV
• 3-state output
• Operation temperature: -40℃-125℃
• RoHS-compliant package: TSSOP24
Application
• Motor driver
• Industrial automation
• Telecom
Functional Block Diagram
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