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74FCT388915T133J Datasheet(PDF) 2 Page - Integrated Device Technology |
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74FCT388915T133J Datasheet(HTML) 2 Page - Integrated Device Technology |
2 / 10 page COMMERCIALTEMPERATURERANGE 2 IDT74FCT388915T 3.3V LOW SKEW PLL-BASED CMOS CLOCK DRIVER (3-STATE) PIN CONFIGURATION PIN DESCRIPTION Q/2 GND Q3 VCC Q2 GND LOCK FEEDBK REF_SEL SYNC(0) VCC(AN) LF GND(AN) SYNC(1) 28 43 21 27 26 25 24 23 22 21 20 19 5 6 7 8 9 10 11 12 13 14 15 16 17 18 5 6 7 8 9 10 VCC OE/RST FEEDBACK 1 2 3 4 20 19 18 17 16 15 14 13 Q4 12 11 GND Q/2 REF_SEL SYNC(0) VCC(AN) LF VCC GND Q3 VCC Q2 GND GND(AN) LOCK Q5 2Q 21 22 23 24 SYNC(1) FREQ_SEL GND Q0 VCC Q1 GND PLL_EN 25 26 27 28 SSOP TOP VIEW PLCC TOP VIEW Pin Name I/O Description SYNC(0) I Referenceclockinput SYNC(1) I Referenceclockinput REF_SEL I Chooses reference between SYNC (0) & SYNC (1) (refer to functional block diagram) FREQ_SEL I Selects between ÷ 1 and ÷ 2 frequency options (refer to functional block diagram) FEEDBACK I Feedbackinputtophasedetector LF I Input for external loop filter connection Q0-Q4 O Clock output Q5 O Inverted clock output 2Q O Clock output (2 x Q frequency) Q/2 O Clock output (Q frequency ÷ 2) LOCK O Indicates phase lock has been achieved (HIGH when locked) OE/ RST I Asynchronous reset (active LOW) and output enable (active HIGH). When HIGH, outputs are enabled. When LOW, outputs are in HIGH impedance. PLL_EN I Disables phase-lock for low frequency testing (refer to functional block diagram) |
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