Crystal oscillator
www.eea.epson.com
Specifications (characteristics)
SG-636 PTW / STW
SG-645 PTW / STW
SG-636 PHW / SHW
SG-645 PHW / SHW
SG-636 PCW / SCW
SG-645 PCW / SCW
32.001 MHz to 135.000 MHz
SG-636***:-55 C to +100 C / SG-645***:-55 C to +125 C
B: 50 10-6 C: 100 10-6
-40 C to +85 C : SG-645PCW / SCW Only
No load condition( Max. frequency range )
50 % VCC level, L_CMOS=Max.
IOH=-16 mA(PTW , STW , PHW , SHW)
/-8 mA(PCW , SCW)
IOL= 16 mA(PTW , STW , PHW , SHW)
/ 8 mA(PCW , SCW)
Output load condition
(TTL)
fO 90 MHz, Max.Supply voltage.
Output load condition
(CMOS)
Max.frequency, Max.Supply voltage.
20 % VCC to 80 % VCC level, L_CMOS Max.
Time at minimum supply voltage to be 0 s
+25 C, VCC=5.0 V / 3.3 V, First year
*1 SG-636 series “C” tolerance : 40 MHz<fo135 MHz
External dimensions (Unit:mm)
Footprint (Recommended) (Unit:mm)
.
To maintain stable operation, provide a 0.01uF to
0.1uF by-pass capacitor at a location as near as
possible to the power source terminal of the crystal
product (between Vcc - GND).
Metal may be exposed on the top or bottom of this product.
This will not affect any quality, reliability or electrical spec.
Note.
OE pin (PTF,PCE,PDE,PTW,PHW,PCW,PTG,PHG,PCG)
OE pin = "H" or "open" : Specified frequency output.
OE pin = "L" : Output is high impedance.
ST pin (STW, SHW, SCW,SCG)
ST pin = "H" or "open" : Specified frequency output.
ST pin = "L" : Output is low level (weak pull - down),oscillation stops.
ST pin (SCE)
ST pin = "H" or "open" : Specified frequency output.
ST pin = "L" : Output is low level ,oscillation stops.