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.
●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.
●This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device.
●The VCC isolation feature ensures that if either VCCA or VCCB is at GND, then the outputs are in the high-impedance state. The bus-hold circuitry on the powered-up side always stays active.
●NanoFree package technology is a major breakthrough in IC packaging concepts, using the die as the package.
● Available in the Texas Instruments NanoStar&trade
●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
