SN74LVC2T45DCT(LX)

SN74LVC2T45 and SN74LVCH2T45 are 2-bit dual-supply bus transceivers with 3-state outputs, supporting bidirectional voltage-level translation. They feature two 2-bit input/output ports (nA and nB), a direction control input (DIR), and dual supply pins (VCC(A) and VCC(B)). Both VCC(A) and VCC(B) can be powered at any voltage between 1.2V and 5.5V, making these devices suitable for translation between any low-voltage nodes (1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5.0V). Pins nA and DIR are powered by VCC(A), while pin nB is powered by VCC(B). When DIR is high, data is transmitted from nA to nB; when DIR is low, data is transmitted from nB to nA. The IOFF feature makes these devices fully suitable for applications with partial power-down. The IOFF circuitry disables the outputs to prevent damaging backflow current during power-off conditions. In power-off mode, when VCC(A) or VCC(B) is at GND level, both port A and port B are in a high-impedance state. The bus-hold circuitry in SN74LVCH2T45 keeps unused or floating data inputs at a valid logic level.

Key features

• Wide supply voltage range: VCC(A): 1.2V~5.5V, VCC(B): 1.2V~5.5V
• Maximum data rate:
• 420 Mbps (input at 3.3V, output at 5.0V)
• 210 Mbps (input at 1.2V~5.5V, output at 3.3V)
• 140 Mbps (input at 1.2V~5.5V, output at 2.5V)
• 75 Mbps (input at 1.2V~5.5V, output at 1.8V)
• 60 Mbps (input at 1.2V~5.5V, output at 1.5V)
• Suspend mode
• ±24mA output drive (VCC = 3.0V)
• Input voltage up to 5.5V
• Low power consumption: maximum ICC of 16uA
• IOFF circuitry supports partial power-down operation
• Operating temperature range: -40°C~+125°C
• Package: VSSOP8/TSSOP8