NJU6379 Product Specification 1.8V Operation 3rd. Over Tone Quartz Crystal Oscillator ■GENERAL DESCRIPTION ■PACKAGE OUTLINE The NJU6379 series is a C-MOS IC for 3rd. over tone quartz crystal oscillator that consists of an oscillation amplifier and 3-state output buffer, and can oscillate at 1.8V very low voltage. The NJU6379 has ability to oscillate from 60 to 70MHz. The oscillation amplifier is realized very low stand-by current using NAND circuit. The 3-state output buffer is C-MOS compatible. ■FEATURES NJU6379C-D ■PAD LOCATION ●Operating Voltage 1.8 to 2.8V ●Maximum Oscillation Frequency (See Line-up Table) ●Low Operating Current ●High Fan-out IOH/IOL= 4mA @2.5V ●Oscillation Stop and Output Stand-by Function ●3-State Output Buffer ●Oscillation Capacitors Cg and Cg on-chip ●Package Outline Thin-Chip ●C-MOS Technology ■LINE-UP TABLE Type No. NJU6379 Thin-Chip CONT XT XT VSS VDD FOUT ■COORDINATES Recommended Oscillation Frequency Range 60 to 70 MHz Output Frequency Cg/Cd f0 8.5/9pF No Pad Name X Y 1 CONT -178 231 2 XT -178 77 3 XT -178 -77 4 5 8 VSS FOUT VDD -178 206 206 -231 -231 231 Starting Point:Chip Center Unit[um] Chip Size:0.7x0.75mm Thin-Chip Thickness:200±20um Pad Size:90x90um ■BLOCK DIAGRAM VDD XT VSS Rf XT Cg Cd 3 − STATE BUFFER FOUT CONT 2002/04/10 ( 1 / 4 ) NJU6379 ■TREMINAL DESCRIPTION SYMBOL CONT FUNCTION Oscillation and 3-state Output Buffer Control FOUT CONT H or OPEN Output Frequency f0 L Oscillation Stop and High impedance Output XT Quartz Crystal Connecting Terminals XT VSS VSS=0V FOUT Frequency Output VDD VDD=2.5V Note1) Refer to the line-up table. ■ABSOLUTE MAXIMUM RATINGS (Ta=25°C) PARAMETER SYMBOL RATING UNIT Supply Voltage VDD -0.5 to +7.0 V Input Voltage VIN VSS-0.5 to VDD+0.5 V Output Voltage VO -0.5 to VDD+0.5 V mA Input Current IIN ±10 mA Output Current IO ±25 Operating Temperature Range Topr -40 to +85 °C Storage Temperature Range Tstg -55 to +125 °C Note2) If the supply voltage(VDD) is less than 7.0V, the input voltage must not over the VDD level though 7.0V is limit specified. Note3) Decupling capacitor should be connected between VDD and VSS due to the stabilized operation for the circuit. 2002/04/10 ( 2 / 4 ) NJU6379 ■ELECTRICAL CHARACTERISTICS PARAMETER Operating Voltage SYMBOL VDD CONDITIONS MIN 1.8 TYP PARAMETER Operating Current Oscillation Stopping Current Stand-by Current SYMBOL IDD CONDITIONS fosc=70MHz,CL=15pF MIN TYP Input Voltage Output Current Input Current 3-state Off Leakage Current Feedback Resistance Internal Capacitor Maximum Oscillation Frequency Output Signal Symmetry Output Signal Rise Time Output Signal Fall Time Output Disable time Output Enable Time Note4) ISTB CONT =VSS, No load Ist CONT =XT=VSS, No load VIH VIL IOH IOL IIN IOZ Rf Cg/Cd (Ta=25°C) UNIT V (VDD=2.5V,Ta=25°C) MAX UNIT 8 5 uA 1 2.5 0.5 CONT =0.8VDD 7.5 12.0 uA V V mA mA uA CONT =0.2VDD 1.2 2.0 uA ±0.1 uA Note4) VOH=2.25V VOL=0.25V 2 0 4 4 CONT =VSS, FOUT= VDD or VSS XT=VDD fOSC=70MHz FMAX SYM 2 MAX 2.8 KΩ pF 4.2 8.5/9 70 CL=15pF, @VDD/2 45 MHz 50 55 % tr CL=15pF,10%~90% 3 6 ns tf CL=15pF,90%~10% 3 6 ns TPLZ TPZL CL=15pF,RUP=10kΩ CL=15pF,RUP=10kΩ 200 200 ns ns Excluding input current on CONT Terminal. 2002/04/10 ( 3 / 4 ) NJU6379 ■MEASURMENT CIRCUITS (1)Output Signal Symmetry(CL=15pF) VDD 1000pF Pulse Generator 1/2VDD FOUT XT 50Ω CL=15pF H VSS L (2)Output Signal Rise/Fall Time(CL=15pF) 90% VDD 1000pF Pulse Generator FOUT XT 50Ω 50% 10% CL=15pF VSS tr tf (3)Output Disable/Enable Time(CL=15pF,RUP=10kΩ) XT RUP=10kΩ VDD CONT FOUT Pulse Generator CONT VSS 0.8VDD 0.2VDD TPLZ CL=15pF TPZL FOUT VOH VOL 50Ω [CAUTION] The specifications on this data book are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this data book are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. 2002/04/10 ( 4 / 4 )