DESCRIPTION:

Maxwell Technologies’ 54LVTH162245 devices are 16-bit (dual-octal) non-inverting 3-state transceivers designed for low-voltage (3.3V) VCC operation, but with the capability to provide a TTL interface to a 5V system environment. These devices can be used as two 8-bit transceivers or one 16-bit transceiver. The devices allow data transmission from the A bus to the B bus or form the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output enable (OE) input can be used to disable the device so that the buses are effectively isolated. The A-port outputs, which are designed to source or sink up to 12 mA, include equivalent 22-Ω series resistors to reduce overshoot and undershoot.

FEATURES:

• A-Port outputs have equivalent 22-Ω series resistors, so no external resistors are required

• Support mixed-mode signal operation (5V input and output voltages with 3.3V VCC)

• Support unregulated battery operation down to 2.7V

• Typical VOLP (output ground bounce) < 0.8V at VCC = 3.3V, 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

• Distributed VCC and GND pin configuration minimizes highspeed switching noise

• Flow-through architecture optimizes PCB layout

• Total dose hardness:

- > 100 krad (Si), depending upon space mission

• Package: 48 pin RAD-PAK® flat pack