8-Bit Dual-Supply Bus Transceiver With Configurable Voltage Translation and 3-State Outputs
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NCA8T245 is an 8-bit buffer/driver with two separate power supply. The two power supply voltages range from 1.65V to 5.SV. The A port tracks VCCA and B port tracks VCCB, so it supports low-voltage bidirectional shift between any of the 1.8V, 2.5V, 3.3V and 5.5V. NCA8T245 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 high-impedance state. During power up and power down, /OE should be tied to VCC through a pull-up resistor to ensure the outputs high impedance state. Each channel of NCA8T245 supports maximum 32 mA current drive when the power supply of output side ranges from 4.5V to 5.5V. All unused inputs must be held at VCC or GND to prevent excess supply current.
Product Features
• Input: TTL/CMOS level compatible
• Power supply voltage:
VCCA: 1.65V-5.5V
VCCB: 1.65V-5.5V
• 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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