The MC10E/MC100E336 contains three bus transceivers with both transmit and receive registers. The bus outputs (BUS0BUS2) are specified for driving a 25 bus; the receive outputs (Q0 Q2) are specified for 50. The bus outputs feature a normal HIGH level (VOH) and a cutoff LOW level -- when LOW, the outputs go to 2.0V and the output emitter-follower is "off", presenting a high impedance to the bus. The bus outputs also feature edge slow-down capacitors.