The LVT322245 and LVTH322245 contain thirty-two non-inverting bidirectional buffers with 3-STATE outputs and are intended for bus oriented applications. The device is byte controlled. Each byte has separate control inputs which can be shorted together for full 32-bit operation. The T/R# inputs determine the direction of data flow through the device. The OE# inputs disable both the A and B ports by placing them in a high impedance state.

The LVT322245 and LVTH322245 are designed with equivalent 25ohm series resistance in both the HIGH and LOW states on the A Port outputs. This design reduces line noise in applications such as memory address drivers, clock drivers, and bus transceivers/transmitters.

The LVTH322245 data inputs include bushold, eliminating the need for external pull-up resistors to hold unused inputs.

These non-inverting transceivers are designed for low-voltage (3.3V) V_CC applications, but with the capability to provide a TTL interface to a 5V environment. The LVT322245 and LVTH322245 are fabricated with an advanced BiCMOS technology to achieve high speed operation similar to 5V ABT while maintaining a low power dissipation.

• Input and output interface capability to systems at 5V V_CC
• Bushold data inputs eliminate the need for external pull-up resistors to hold unused inputs (74LVTH322245)
• Also available without bushold feature (74LVT322245)
• Live insertion/extraction permitted
• Power Up/Power Down high impedance provides glitch-free bus loading
• A Port outputs include equivalent series resistance of 25ohm making external termination resistors unnecessary and reducing overshoot and undershoot
• A Port outputs source/sink ±12 mA

  B Port outputs source/sink -32 mA/+64 mA

• ESD performance:

  Human-body model > 2000V

  Machine model > 200V

  Charged-device model > 1000V

• Packaged in plastic Fine-Pitch Ball Grid Array (FBGA)