Crystal oscillator
Epson Toyocom
Specifications (characteristics)
Specifications
SG-636 PHW / SHW
SG-645 PHW / SHW
Item
Symbol
SG-636 PTW / STW
SG-645 PTW / STW
SG-636 PCW / SCW
SG-645 PCW / SCW
Remarks
Output frequency range
Supply voltage
Storage
32.001 MHz to 135.000 MHz
5.0 V ±0.5 V
f
0
VCC
3.3 V ±0.3 V
SG-636P**:-55 °C to +100 °C / SG-645P**:-55 °C to +125 °C
Store as bare product after unpacking
T_stg
T_use
temperature
Operating
Temperature
range
-20 °C to +70 °C
-40 °C to +85 °C
temperature
Frequency tolerance
SG-645PCW / SCW Only
-20 °C to +70 °C
-40 °C to +85 °C : SG-645PCW / SCW Only
No load condition( Max. frequency range )
OE=GND (PTW,PHW,PCW)
f_tol
B: ±50 × 10-6 C: ±100 × 10-6
M: ±50 × 10-6
*1
Current consumption
Disable current
Stand-by current
ICC
I_dis
I_std
45 mA Max.
30 mA Max.
28 mA Max.
16 mA Max.
50 μA Max.
=GND (STW,SHW,SCW)
ST
40 % to 60 %
50 % VCC level, L_CMOS=Max.
1.4 V 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)
Symmetry
SYM
VOH
40 % to 60 %
High output voltage
Low output voltage
VCC-0.4 V Min.
0.4 V Max.
VOL
Output load condition
(TTL)
Output load condition
(CMOS)
L_TTL
L_CMOS
5 TTL Max.
fO≤ 90 MHz, Max.Supply voltage.
15 pF Max.
Max.frequency, Max.Supply voltage.
Output enable /
disable input voltage
VIH
VIL
2.0 V Min.
0.8 V Max.
70 % VCC Min.
20 % VCC Max.
OE Terminal or
Terminal
ST
4 ns Max.
20 % VCC to 80 % VCC level, L_CMOS ≤ Max.
0.4 V to 2.4 V level
Rise time / Fall time
t
r / t
f
4 ns Max.
10 ms Max.
±5 × 10-6 / year Max.
Time at minimum supply voltage to be 0 s
+25 °C, VCC=5.0 V / 3.3 V, First year
Start-up time
Frequency aging
t_str
f_aging
*1 SG-636 series “C” tolerance : 40 MHz<f0≤135 MHz
External dimensions
(Unit:mm)
Footprint (Recommended)
SG-645 series
(Unit:mm)
.
SG-645 series
7.1±0.2
#4
1.8
#3
Pin map
Pin
1
2
Connection
OE or ST
GND
E135.00C
PCW 0245A
3
OUT
4
VCC
#1
#2
0.4
5.08
(0.75)
(0.75)
3.8
0 Min.
5.08
SG-636 series
10.5 Max.
#4
#3
Pin map
Pin
1
2
Connection
OE or ST
GND
E 18.4320C
PTF9352A
SG-636 series
3
4
OUT
VCC
1.3
#2
#1
(1.0)
(1.0)
0.51
5.08
0.05Min.
3.6
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.
5.08
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.
To maintain stable operation, provide by-pass capacitor with
more than 0.1 μF at a location as near as possible to the power
source terminal of the crystal products (between VCC - GND).
ST pin (SCE)
ST pin = "H" or "open" : Specified frequency output.
ST pin = "L" : Output is low level ,oscillation stops.
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