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-Ωseries resistors to reduce overshoot and undershoot.
Maxwell Technologies' patented RAD-PAK® packaging technology incorporates radiation shielding in the microcircuit package. It eliminates the need for box shielding while providing the required radiation shielding for a lifetime in orbit or space mission. In a GEO orbit, RAD-PAK provides greater than 100 krad (Si) radiation dose tolerance. This product is available with screening up to Class S.

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
*TypicalVOLP (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

54LVTH162245RPFS, 54LVTH162245RPFB, 54LVTH162245RPFE

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