General Description

The LVTH16500 is an 18-bit universal bus transceiver combining D-type latches and D-type flip-flops to allow data flow in transparent, latched, and clocked modes.

Data flow in each direction is controlled by output-enable (OEAB and OEBA), latch-enable (LEAB and LEBA), and clock (CLKAB and CLKBA) inputs.

The LVTH16500 data inputs include bushold, eliminating the need for external pull-up resistors to hold unused inputs.

The transceiver is designed for low voltage (3.3V) VCC applications, but with the capability to provide a TTL interface to a 5V environment. The LVTH16500 is fabricated with an advanced BiCMOS technology to achieve high speed operation similar to 5V ABT while maintaining low power dissipation.

Features

■ Input and output interface capability to systems at 5V VCC

■ Bushold data inputs eliminate the need for external pull-up resistors to hold unused inputs

■ Live insertion/extraction permitted

■ Power Up/Down high impedance provides glitch-free bus loading

■ Outputs source/sink −32 mA/+64 mA

■ Functionally compatible with the 74 series 16500

■ Latch-up performance exceeds 500 mA