Overview: MXO45 Clock Oscillators
Tri-State Output
Tri-State Logic uses the two standard logic levels of high (logic 1) and low (logic 0) but has added a third V0H V0H 90% Vdd 1 state that is not a logic level but an open circuit /2 Vdd 2.4V 1.4V 10% Vdd 0.4V condition that effectively disconnects the output from V0L V0L GND TF T1 - Rise Time TR your circuit with a high impedance (floating) state. TR TF T1 T1 T2 - Fall Time Thereby enabling the use of numerous oscillators on T2 T2 the same bus line. Also, by using the enable pin to control the output, the crystal is still running even when Test Test 14 the output is disabled (stand-by mode), thus elim8 RL 390 14 A A inating any start-up time for the oscillator. OSC .01 OSC 15 pF VDC VDC 15 V .01 V µf 7 7 CTS HCMOS/TTL products utilize an Application 7 pF µf C-MOS Specific Integrated Circuit (ASIC) design strategy. Diode: 1N4148 TTL Employing a single design family supporting both HCMOS/TTL applications helps in reducing costs and lead times. Utilizing ASIC technology reduces the number of ponents inside the XO (crystal oscillator), thus increasing reliability and further reducing cost.
