kHz Range Crystal Devices Digital Temperature Compensated Crystal Oscillator Surface Mount Type DTCXO KT3225T Series CMOS/ 3.0V Typ./ 3.2×2.5mm Features • Miniature SMD type (3.2×2.5×1.0mm) • Built-in 32.768kHz D-TCXO • High frequency stability : ±5.0x10-6/ -40 to +85°C • Low supply current : 1.5mA typ (VDD=3.0V) • Temperature compensated voltage Range : 2.0V to 5.5V Applications How to Order KT3225T 32768 E A W 30 T xx ① ② ① Series ② Output Frequency ③ Frequency Stability ④ Lower Temperature A No Temp. Compensated ±3.8×10-6 D ±5.0×10-6 E ⑤ Upper Temperature • High accuracy time references • Microcontroller with built in RTC -40°C -30°C -20°C A C E ⑥ Supply Voltage +85°C +70°C +60°C W T R RoHS Compliant ③ ④ ⑤ ⑥ ⑦ ⑧ 30 33 50 3.0V 3.3V 5.0V ⑦ Initial Frequency Tolerance A 5±5×10-6 B 0±5×10-6 T TCXO ⑧ Option Code Packaging (Tape & Reel 3000pcs/ reel) Specifications Item Symbol Nominal Frequency Oscillation Output Voltage Temperature Compensated Voltage Storage Temperature Operating Temperature Frequency Tolerance Frequency Stability vs Temp. Frequency Stability vs Supply Voltage Frequency Aging Low Level Output Voltage High Level Output Voltage Low Level Input Voltage High Level Input Voltage DUTY Ratio Rise Time Fall Time f_nom VDD VTEM T_stg T_use ― fo-Tc df/ fo f_age VOL VOH VIL VIH Duty tr tf Specifications Conditions Ta=25±2°C E : Ta=-40 to +85°C VDD=2.0 to 5.5V, Ta=25±2°C IOL=+1.0mA, VDD=3V IOH=-1.0mA, VDD=3V CL=15pF 20%VDD→80%VDD, CL=15pF, VDD=3V 80%VDD→20%VDD, CL=15pF, VDD=3V Ta=25°C t_str Ta=-40 to 85°C ICC1 CLKOE=VSS ICC2 CLKOE=VDD L_CMOS CMOS Output Start-up Time Power Supply Current1 Power Supply Current2 Output Load Condition Dimensions (Unit: mm) Min. Typ. Max. ― 1.3 2.0 -40 -40 -3.0 -5.0 -1.0 -3.0 0.0 2.2 0.0 0.8×VDD 40 ― ― ― ― ― ― ― 32.768 3.0 3.0 +25 +25 ― ― ― ― ― ― ― ― ― ― ― ― ― 0.6 1.5 ― ― 5.5 5.5 +85 +85 +3.0 +5.0 +1.0 +3.0 0.8 3.0 0.2×VDD 5.5 60 100 100 1.0 3.0 2.0 4.0 15.0 Recommended Land Pattern #1 #2 2.5±0.2 #7 #6 #5 #3 #4 0.6 0.55 0.27 1.1 1.0 max. #3 0.85 0.5 #2 #4 1.1 #1 0.7 0.35 0.6 0.85 K 0.45 C0.15 0.55 #8 0.4 #7 0.5 #6 0.5 #5 R0.15 Pin No #1 #2 #3 #4 #5 #6 #7 #8 Function CLKOE N.C N.C VSS CLKOUT N.C N.C VDD 0.4 0.4 kHz V V °C °C ×10-6 ×10-6 ×10-6/ V ×10-6 V V V V % nsec nsec sec sec μA μA pF (Unit: mm) 3.2±0.2 #8 Units 0.4 Note: A capacitor of value 0.01µF between V DD and GND is recommended.