The devices also feature split output bank power supplies that enable banks 1 & 2, bank 3, and bank 4 to operate at a different power supply levels. The ternary PE/HD pin controls the synchronization of output signals to either the rising or the falling edge of the reference clock and selects the drive strength of the output buffers. The UT7R995 and UT7R995C both interface to a digital clock while the UT7R995C will also interface to a quartz crystal.