●This 16-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 1.65 V to 5.5 V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.65 V to 5.5 V. This allows for universal low-voltage bidirectional translation between any of the 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes.
●The SN74LVCH16T245 is designed so that the control pins (1DIR, 2DIR, 1OE, and 2OE) are supplied by VCCA.
●The SN74LVCH16T245 is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR) input and the output-enable (OE) input 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 is always active and must have a logic HIGH or LOW level applied to prevent excess ICC and ICCZ.
●Active bus-hold circuitry holds unused or undriven data 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 when it is powered down.
●The VCC isolation feature ensures that if either VCC input is at GND, then all outputs are in the high-impedance state. The bus-hold circuitry on the powered-up side always stays active.
●To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
● Control Inputs VIH/VIL Levels Are
●Referenced to VCCA Voltage
● VCC Isolation Feature – If Either VCC
●Input Is at GND, All Outputs Are in the
●High-Impedance State
● Overvoltage-Tolerant Inputs/Outputs Allow
●Mixed-Voltage-Mode Data Communications
● Fully Configurable Dual-Rail Design Allows
●Each Port to Operate Over the Full 1.65-V to
●5.5-V Power-Supply Range
● Bus Hold on Data Inputs Eliminates the Need
●for External Pullup/Pulldown Resistors
● Ioff Supports Partial-Power-Down
●Mode Operation
● Latch-Up Performance Exceeds 100 mA
●Per JESD 78, Class II
● ESD Protection Exceeds JESD 22
● 2000-V Human-Body Model (A114-A)
● 200-V Machine Model (A115-A)
● 1000-V Charged-Device Model (C101)
●## SUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONS
● Controlled Baseline
● One Assembly/Test Site
● One Fabrication Site
● Available in Military (–55°C/125°C)
●Temperature Range(1)
● Extended Product Life Cycle
● Extended Product-Change Notification
● Product Traceability
●(1) Custom temperature ranges available
