74AVCH4T245

Description

The 74AVCH4T245 device is 4-bit, dual supply transceiver that enables bidirectional level translation, designed for asynchronous communication between two data buses. It features four 2-bit input-output ports (nAn and nBn), a direction control input (nDIR), an output enable input (nOE) and dual supply pins (VCC(A) and VCC(B)). Both VCC(A) and VCC(B) can be supplied at any voltage between 0.8 V and 3.6 V making the device suitable for translating between any of the low voltage nodes (0.8V, 1.2V, 1.5V, 1.8V, 2.5V and 3.3V). Pins nAn, nOE and nDIR are referenced to VCC(A) and pins nBn are referenced to VCC(B). A HIGH on nDIR allows transmission from nAn to nBn and a LOW on nDIR allows transmission from nBn to nAn. The output enable input (nOE) can be used to disable the outputs so the buses are effectively isolated. The device is fully specified for partial power-down applications using IOFF. The IOFF circuitry disables the output, preventing any damaging back flow current through the device when it is powered down. In suspend mode when either VCC(A) or VCC(B) are at GND level, both nAn and nBn are in the high-impedance OFF-state. The 74AVCH4T245 has active bus hold circuitry which is provided to hold unused or floating data inputs at a valid logic level. This feature eliminates the need for external pull-up or pull-down resistors.

The 74AVCH4T245 is available in the packages, and is specified for operation from -40°C to +125°C among all supply voltages. The wide temperature ranges and high ESD tolerance facilitate their use in harsh applications.

Feature(s)

• Supply Voltage Range: VCC(A)/ VCC(B): from 0.8V to 3.6V
• Max Data Rates:
  • 380Mbps (1.8V to 3.3V Translation)
  • 200Mbps (<1.8V to 3.3V Translation)
  • 200Mbps (Translate to 2.5V or 1.8V)
  • 150Mbps (Translate to 1.5V)
  • 100Mbps (Translate to 1.2V)
  • 50Mbps (Translate to 0.8V~1.1V)
• High Drive Strength (±12mA at 3.3V)
• IOFF Supports Partial-Power-Down Mode Operation
• ESD Protection Exceeds JESD 22
  • Exceeds 5000V Human Body Model (A114)
  • Exceeds 1500V Charged Device Model (C101)
• Latch-Up Exceeds 100mA per JESD 78, Class II
• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)
• For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/

Application(s)

• Personal Electronics
• Industrial
• Enterprise
• Telecom