euroquartz limited blacknell lane crewkerne somerset uk ta18 7he tel: +44 (0)1460 230000 fax: +44 (0)1460 230001 info@euroquartz.co.uk www.euroquartz.co.uk euro quartz description HTXO oscillators are designed to operate at ambient temperatures <250c.the rugged design consists of a high-shock crystal and a high temperature cmos integrated circuit packaged in a 7.5 x 5.0mm surface-mount ceramic package. outline & dimensions features extended high temperature operation up to 250c 3.3v or 5.0v supply voltages excellent stability over temperature fast start-up cmos output optional enable/disable function low emi emission 250 HTXO oscillator high temperature crystal oscillator 1.5mhz to 50mhz applications oil & gas downhole instrumentation rotary shaft sensors underground boring tools avionics applications frequency range 1 : 1.5mhz to 50.0mhz supply voltage: +5.0volts 10% or +3.3volts 5% calibration tolerance 2 : 100ppm frequency stability over temperature 3 : +250 ppm for 25c to 250c total tolerance 4 : 350ppm for 25c to 250c output load (cmos): 15pf start-up time: 5ms max. rise/fall time: 10ns max. duty cycle: 40% min., 60% max. shock, survival 5 : up to 30,000g, 0.5ms, ? sine vibration, survival 6 : 20g, 10-2000hz, swept sine operating temperature range 7 : -55 up to 225c specification packaging options HTXO oscillators are available either tray packed (<250pcs) or tape and reel (>250 pieces). 16mm tape, 178mm or 330mm reels per eia 418). current consumption typically 2ma at 8mhz, 3.3v, 250c and cload = 10pf supply current page 1 of 2
euroquartz limited blacknell lane crewkerne somerset uk ta18 7he tel: +44 (0)1460 230000 fax: +44 (0)1460 230001 info@euroquartz.co.uk www.euroquartz.co.uk euro quartz how to order HTXO smd crystal oscillators HTXO 4 b s t - sm5 - 20.0m / - / - / 500 / q blank = standard s = special or custom enable/disable option t or n termination blank = sm1= gold plated sm5 = solder dipped (sm1 and sm5 are pb free) frequency m = mhz temp. range q = +25 to +225c w = +25dc to 250c s = customer specified temp. range supply voltage 4 = 3.3v 5 = 5.0v supply voltage: -0.5v to +6.0v (5.v v dd ) storage temperature: -55 to +125c output: frequency output frequency output oscillator: oscillates oscillates current: normal normal enable (pin 1 low) absolute maximum ratings there are two enable/disable options available, t and n. the t- version has a tri-state output and oscillates internally when the output is put into the high z state. the n-version does not have pin 1 connected internally and has no enable/disable capability. the following table describes the enable/disable option t. disable (pin 1 high) t n output: high z state n/c oscillator: stops n/c current: very low n/c enable/disable options page 2 of 2 shock level a = 5,000g b = 10,000g c = 20,000g d = 30,000g 250 HTXO oscillator high temperature crystal oscillator 1.5mhz to 50mhz total frequency tolerance (in ppm)
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