TEMPERATURE COMPENSATED CRYSTAL OSCILLATOR (SMD • Ceramic Package) CSX-252T 2000pcs/reel ■FEATURES 7High-density SMD type. Ultra-light weight and ultraminiature size. 7Automatic mounting and reflowable type. 7Low current consumption. 7Small phase noise. 7Available in 1.8V ultralow voltage drive. 7Most appropriate for Cellular phone and other equipment with telecommunication devices. Life-size ■DIMENSION [mm] ■SOLDER PAD LAYOUT [mm] 0.9 2.5±0.15 0.7 ＃3 ＃3 ＃4 ＃1 ＃2 ＃2 ＃1 1.0 Max. 1.0 1.0 0.3 0.6 2.0±0.15 0.6 ＃4 Pin Assignment Pin No. Connection VC or GND ＃1 ＃2 GND ＃3 OUTPUT ＃4 Vcc #1 Function Connection Function VC VC-TCXO GND TCXO 1.2 0.5 1.2 ■STANDARD SPECIFICATIONS Item Model CSX-252T 19.2MHz , 26.0MHz , 38.4MHz Nominal Frequency f0 Frequency Stability △f/f0 Operating Temperature Range TOPR −30℃∼＋75℃ Storage Temperature Range TSTR −40℃∼＋85℃ Supply Voltage Vdd 1.8V ∼ 3.0V ±5% △fVC ±4∼±15ppm / Cenrter voltage ±1.0V Idd 2.5mA Max. Output Voltage VOUT 0.8Vp-p Min.（10kΩ/ 10pF） Start-up time TST 3.5 msec Max. Aging (first year) FA ±1.0ppm / year Max. Frequency adjustment range Supply current ±2.5ppm /（−30℃∼＋75℃） http://www.citizen.co.jp/english/crystal/index.html 28