Ultra Low Current KX Series Crystal Oscillator
2.5 x 2.0mm
KX251
CMOS 32.768kHz
2.5 x 2.0mm Ceramic SMD
Package: (Scale: none; Dimensions are in mm)
Product Features
Recommended Land Pattern:
• AT Cut 32.768 kHz XO
• CMOS compatible logic levels
• Ultra low active current (< 10µA)
• Very tight temperature stability
• Designed for standard reflow and washing
techniques
• Pb-free and RoHS/Green compliant
Product Description
Pin Functions:
The KX251 Series real time clock oscillator
achieves superb stability over a broad range
of operating conditions. It utilizes Pericom
proprietary technology to achieve ultra low
current less than 10µA. The output clock
signal is compatible with LVCMOS/LVTTL logic
levels. The device, available on tape and reel,
is contained in a 2.5 x 2.0mm surface-mount
ceramic package.
Pin
Function
OE Function
Ground
1
2
3
Clock Output
VDD
4
Part Ordering Information:
Applications
• Real-Time Clock Oscillator where low current
KX 251
V
I S 032.768000
B
C
D
A
and tight stability are needed
Stability and Temp Range:
Voltage:
Internal #:
0 ~ 9
Frequency:
FFF.FFFFFF
kHz, “3 digits/decimal/6 digits” format
Stability
Temp Range
1=+3.3V
2=+2.5V
3=+1.8V
B=+3.0V
A = +/-20 ppm -20/+70°C
B = +/-25 ppm -20/+70°C
C = +/-50 ppm -20/+70°C
D = +/-25 ppm -40/+85°C
E = +/-50 ppm -40/+85°C
F = +/-20 ppm 0/+70°C
G = +/-25 ppm 0/+70°C
H = +/-25 ppm 0/+85°C
I = +/-25 ppm -20/+85°C
Z = Reference Design
Following the above format, Saronix-eCera part numbers will be assigned upon
confirmation of exact customer requirements.
SaRonix-eCera™ is a Pericom® Semiconductor company
•
US: +1-408-435-0800 TW: +886-3-4518888
•
www.saronix-ecera.com
14-0033
All specifications are subject to change without notice.
KX251 REV C
8/27/2014
1
