Description
The 74AVC1T45 is a single bit, dual supply transceiver with tri-state outputs suitable for transmitting a single logic bit across different voltage domains. The A input/output pin is designed to track VCCA while the B input/output tracks VCCB. This arrangement allows for universal low-voltage translation between any voltages from 1.2V to 3.6V. The Direction pin (DIR) controls the direction of the transceiver and in a logic voltage related to VCCA. When a high logic level is applied to DIR the A pin becomes an input and the B pin becomes the output. Conversely the roles of A and B are reversed when DIR is asserted low.
The tri-state feature occurs when either of the power supply voltages are zero. This is also an Ioff feature and allows for the output to remain in a high-impedance state with both power supplies at 0V preventing damaging backflow currents and providing power down electrical isolation up to 3.6 V as not to interfere with any logic activity on pin A or B.

Features
• Wide Supply Voltage Range:
 VCC(A): from 1.2V to 3.6V
 VCC(B): from 1.2V to 3.6V
• ± 12mA Output Drive at 3.3V
• High Noise Immunity—(100mV Hysteresis Typical)
• IOFF Supports Partial-Power-Down Mode Operation
• IOFF Controlled by Either VCC at 0V
• Inputs Accept up to 4.6V
• ESD Protection Exceeds JESD 22
 200-V Machine Model (A115)
 2000-V Human Body Model (A114)
 1000 V Charged Device Model ( C101)
• Latch-Up Exceeds 100mA per JESD 78, Class I
• X2-DFN1409-6 Package Designed as a Direct Replacement for Chip-Scale Packaging.
• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)

Applications
• Voltage Level Translation Well Suited to Join Logic Types Operating at Different Voltages
• Power Down Signal Isolation If Either Voltage Domain is Turned off the Signal is Isolated and There is no Loading on Signal Lines
• Wide Array of Products, such as:
 Cell Phones, Tablets, E-Readers
 PCs, Notebooks, Netbooks, Ultrabooks
 Networking, Routers, Gateways
 Computer Peripherals, Hard Drives, CD/DVD ROMs
 TVs, DVDs, DVRs, Set Top Boxes
 Personal Navigation/GPS
 MP3 players, Cameras, Video Recorders