Low-power X-tal driver with enable and internal resistor; 3-state


The 74AUP1Z125 is a crystal driver with enable, internal resistor and 3-state output. When not in use the EN input can be driven HIGH, putting the device in a low power disable mode with X1 pulled HIGH via RPU, X2 set LOW and Y in the high impedance OFF-state. In disable mode the output Y assumes the high impedance OFF-state. Schmitt trigger action on the EN input makes the circuit tolerant to slower input rise and fall times across the entire VCC range from 0.8 V to 3.6 V. Schmitt-trigger action at all inputs makes the circuit tolerant of slower input rise and fall times.



  • Wide supply voltage range from 0.8 V to 3.6 V

  • CMOS low power dissipation

  • High noise immunity

  • Complies with JEDEC standards:

    • JESD8-12 (0.8 V to 1.3 V)

    • JESD8-11 (0.9 V to 1.65 V)

    • JESD8-7 (1.65 V to 1.95 V)

    • JESD8-5 (2.3 V to 2.7 V)

    • JESD8C (2.7 V to 3.6 V)

  • ESD protection:

    • HBM JESD22-A114F Class 3A exceeds 5000 V

    • MM JESD22-A115-A exceeds 200 V

    • CDM JESD22-C101E exceeds 1000 V

  • Latch-up performance exceeds 100 mA per JESD78B Class II Level B

  • Overvoltage tolerant inputs to 3.6 V

  • Low noise overshoot and undershoot < 10 % of VCC

  • IOFF circuitry provides partial Power-down mode operation at output Y

  • Multiple package options

  • Specified from -40 °C to +85 °C and -40 °C to +125 °C


Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)fmax (MHz)Nr of bitsPower dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74AUP1Z125GMProduction0.8 - 3.6CMOS± 1.94.7701ultra low-40~1252906.5145XSON6
74AUP1Z125GNProduction0.8 - 3.6CMOS± 1.94.7701ultra low-40~12527511.7171XSON6
74AUP1Z125GSProduction0.8 - 3.6CMOS± 1.94.7701ultra low-40~12527214.8177XSON6
74AUP1Z125GWProduction0.8 - 3.6CMOS± 1.94.7701ultra low-40~12526438.6153TSSOP6