SN74AVC2T245 Series

Dual-Bit, 2-DIR pin Dual-Supply Bus Transceiver w/ Configurable Voltage Translation, 3-State Output

Catalog

Dual-Bit, 2-DIR pin Dual-Supply Bus Transceiver w/ Configurable Voltage Translation, 3-State Output

Part	Number of Bits per Element	Supplier Device Package [x]	Supplier Device Package	Supplier Device Package [y]	Output Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Number of Elements	Operating Temperature [Max]	Operating Temperature [Min]	Logic Type	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Package / Case	Mounting Type
Texas Instruments SN74AVC2T245RSWR	2	1.8	10-UQFN	1.4	3-State	1.2 V	3.6 V	1	85 °C	-40 °C	Translation Transceiver	12 mA	12 mA	10-UFQFN	Surface Mount

Catalog

Dual-Bit, 2-DIR pin Dual-Supply Bus Transceiver w/ Configurable Voltage Translation, 3-State Output

Key Features

• Each Channel Has Independent Direction ControlControl Inputs VIH/VIL Levels Are Referenced to VCCA VoltageFully Configurable Dual-Rail Design Allows Each Port to Operate Over the Full 1.2V to 3.6V Power-Supply RangeI/Os Are 4.6V TolerantIoff Supports Partial-Power-Down Mode OperationVCC Isolation Feature - If Either VCC Input is at GND, Both Ports are in High-Impedance StateTypical Data Rates500Mbps (1.8V to 3.3V Level-Shifting)320Mbps (<1.8V to 3.3V Level-Shifting)320Mbps (Translate to 2.5V or 1.8V)280Mbps (Translate to 1.5V)240Mbps (Translate to 1.2V)Latch-Up Performance Exceeds 100mA Per JESD 78, Class IIESD Protection Exceeds JESD 225000V Human-Body Model (A114-A)200V Machine Model (A115-A)1500V Charged-Device Model (C101)Each Channel Has Independent Direction ControlControl Inputs VIH/VIL Levels Are Referenced to VCCA VoltageFully Configurable Dual-Rail Design Allows Each Port to Operate Over the Full 1.2V to 3.6V Power-Supply RangeI/Os Are 4.6V TolerantIoff Supports Partial-Power-Down Mode OperationVCC Isolation Feature - If Either VCC Input is at GND, Both Ports are in High-Impedance StateTypical Data Rates500Mbps (1.8V to 3.3V Level-Shifting)320Mbps (<1.8V to 3.3V Level-Shifting)320Mbps (Translate to 2.5V or 1.8V)280Mbps (Translate to 1.5V)240Mbps (Translate to 1.2V)Latch-Up Performance Exceeds 100mA Per JESD 78, Class IIESD Protection Exceeds JESD 225000V Human-Body Model (A114-A)200V Machine Model (A115-A)1500V Charged-Device Model (C101)

Description

This dual-bit noninverting bus transceiver uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.2V to 3.6V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.2V to 3.6V. This allows for universal low-voltage bidirectional translation between any of the 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V voltage nodes. The SN74AVC2T245 is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR) input and the output-enable ( OE) activate either the B-port outputs or the A-port outputs or place both output ports into the high-impedance mode . The device transmits data from the A bus to the B bus when the B-port outputs are activated and from the B bus to the A bus when the A-port outputs are activated. The input circuitry on both A and B ports always is active and must have a logic HIGH or LOW level applied to prevent excess ICC and ICCZ. The SN74AVC2T245 control pins (DIR1, DIR2, and OE) are supplied by VCCA. 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 when it is powered down. The VCC isolation feature ensures that if either VCC input is at GND, both ports are in the high-impedance state. To ensure the high-impedance state during power up or power down, OE must be connected to VCC through a pull-up resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. This dual-bit noninverting bus transceiver uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.2V to 3.6V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.2V to 3.6V. This allows for universal low-voltage bidirectional translation between any of the 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V voltage nodes. The SN74AVC2T245 is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR) input and the output-enable ( OE) activate either the B-port outputs or the A-port outputs or place both output ports into the high-impedance mode . The device transmits data from the A bus to the B bus when the B-port outputs are activated and from the B bus to the A bus when the A-port outputs are activated. The input circuitry on both A and B ports always is active and must have a logic HIGH or LOW level applied to prevent excess ICC and ICCZ. The SN74AVC2T245 control pins (DIR1, DIR2, and OE) are supplied by VCCA. 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 when it is powered down. The VCC isolation feature ensures that if either VCC input is at GND, both ports are in the high-impedance state. To ensure the high-impedance state during power up or power down, OE must be connected to VCC through a pull-up resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.