These bus buffers are designed specifically for low-voltage (3.3-V) VCC operation, but with the capability to provide a TTL interface to a 5-V system environment.
●The LVTH125 devices feature independent line drivers with 3-state outputs. Each output is in the high-impedance state when the associated output-enable (OE)\ input is high.
●Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.
●When VCC is between 0 and 1.5 V, the devices are in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.5 V, 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.
●These devices are fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict.
● Support Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V VCC)
● Support Unregulated Battery Operation Down to 2.7 V
● Typical VOLP (Output Ground Bounce)
● <0.8 V at VCC = 3.3 V, TA = 25°C
● Ioff and Power-Up 3-State Support Hot Insertion
● Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
● Latch-Up Performance Exceeds 500 mA Per JESD 17
● ESD Protection Exceeds JESD 22
● 2000-V Human-Body Model (A114-A)
● 200-V Machine Model (A115-A)
