2024/6/13 14:26:39
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1 Features
• Available in the Texas Instruments NanoStar™ and NanoFree™ Packages
• Control Inputs (DIR) VIH and VIL Levels Are Referenced to VCCA Voltage
• Bus Hold on Data Inputs Eliminates the Need for External Pullup and Pulldown Resistors
• VCC Isolation
• Fully Configurable Dual-Rail Design
• I/Os Are 4.6-V Tolerant
• Ioff Supports Partial-Power-Down Mode Operation
• Typical Max Data Rates
– 500 Mbps (1.8-V to 3.3-V Translation)
– 320 Mbps (<1.8-V to 3.3-V Translation)
– 320 Mbps (Translate to 2.5 V or 1.8 V)
– 280 Mbps (Translate to 1.5 V)
– 240 Mbps (Translate to 1.2 V)
• Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
• ESD Protection Exceeds JESD 22
– Human-Body Model (A114-A): 2000 V
– Machine Model (A115-A): 200 V
– Charged-Device Model (C101): 1000 V
2 Applications
• Personal Electronics
• Industrial
• Enterprise
• Telecommunications
3 Description
The SN74AVCH1T45 is a single-bit noninverting bus transceiver that uses two separate configurable power-supply rails. The A port is designed to track VCCA, which accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track VCCB, which also accepts any supply voltage from 1.2 V to 3.6 V. This allows for universal low-voltage bidirectional translation between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes.
The SN74AVCH1T45 is designed for asynchronous communication between two data buses. The device transmits data from either the A bus to the B bus, or from the B bus to the A bus, depending upon the logic level at the direction-control (DIR) input.
The SN74AVCH1T45 is designed so that the DIR input is referenced to VCCA.
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