2024/5/7 18:11:00
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1 Features
• Fully configurable dual-rail design allows each port to operate with a power supply range from 0.65 V to 3.6 V
• Operating temperature from –40°C to 125°C
• Glitch-free power supply sequencing
• Up to 380 Mbps support when translating from 1.8 V to 3.3 V
• VCC isolation feature
– If either VCC input is below 100 mV, all I/O outputs are disabled and become high impedance
• Ioff supports partial-power-down mode operation
• Compatible with AVC family level shifters
• Latch-up performance exceeds 100 mA per JESD 78, Class II
• ESD protection exceeds JESD 22
– 8000-V human-body model (HBM)
– 1000-V charged-device model (CDM)
2 Applications
• Enterprise and communications
• Industrial
• Personal electronics
• Wireless infrastructure
• Building automation
• Point of sale
3 Description
The SN74AXCH2T45 is a two-bit non-inverting bus transceiver that uses two individually configurable power-supply rails. The device is operational with both VCCA and VCCB supplies as low as 0.65 V. The A port is designed to track VCCA, which accepts any supply voltage from 0.65 V to 3.6 V. The B port is designed to track VCCB, which also accepts any supply voltage from 0.65 V to 3.6 V. Additionally the SN74AXCH2T45 is compatible with a single-supply system.
The SN74AXCH2T45 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 of the direction-control input (DIR). The SN74AXCH2T45 device is designed so the control pin (DIR) is referenced to VCCA.
Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended. If a supply is present for VCCA or VCCB, the bus-hold circuitry always remains active on the A or B inputs respectively, independent of the state of the direction control pin.
This device is fully specified for partial-power-down applications using the Ioff current. The Ioff protection circuitry ensures that no excessive current is drawn from or to an input, output, or combined I/O that is biased to a specific voltage while the device is powered down.
The VCC isolation feature ensures that if either VCCA or VCCB is less than 100 mV, both I/O ports enter a high-impedance state by disabling their outputs.
Glitch-free power supply sequencing allows either supply rail to be powered on or off in any order while providing robust power sequencing performance.
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20万现货SKU
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科技智能大仓储
4小时快速交货
仅从原厂和代理商进货
每一颗料均可原厂追溯
明码标价节省时间成本
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