2

All specifications are subject to change without notice.

KX251 REV C

8/27/2014

SaRonix-eCera™ is a Pericom® Semiconductor company • US: +1-408-435-0800 TW: +886-3-4518888

• www.saronix-ecera.com

CMOS 32.768kHz

Ultra Low Current KX Series Crystal Oscillator

2.5 x 2.0mm

KX251

Output Enable / Disable Function

Parameter

Min.

Typ.

Max.

Units

Notes

Input Voltage (pin 1), Output Enable

0.7 VDD

V

or open

Input Voltage (pin 1), Output Disable (low power standby)

0.3 VDD

V

Output is Hi-Z

Internal Pullup Resistance

100

kΩ

Output Disable Delay

100

ns

Output Enable Delay

10

ms

Electrical Performance

Parameter

Min.

Typ.

Max.

Units

Notes

Output Frequency

32.768

kHz

Supply Voltage

+1.71

+1.8

+1.89

V

See part ordering options

+2.25

+2.5

+2.75

V

+2.85

+3.0

+3.15

V

+3.0

+3.3

+3.6

V

Supply Current, Output Enabled

10

15

µA

At 15pF load

Supply Current, Standby Mode

0.5

µA

Output Hi-Z

Frequency Stability

±50

ppm

See part ordering options, and note 1

Operating Temperature Range

-40

+85

C

See part ordering options

Output Logic 0, VOL

0.1 VDD

V

Output Logic 1, VOH

0.9 VDD

V

Output Load

15

pF

See Note 2

Duty Cycle

45

55

%

measured 50% of VDD

Rise and Fall Time

35

50

ns

measured 20/80% of VDD

Start-up time

10

ms

Notes:

1.

Stability includes all combinations of operating temperature, load changes, rated input (supply) voltage changes, initial calibration tolerance (25°C),

aging (1 year at 25°C average effective ambient temperature), shock and vibration.

2. For specifications othere than those listed, please contact sales.

Absolute Maximum Ratings

Parameter

Min.

Typ.

Max.

Units

Notes

Storage Temperature

-55

+125

°C

For the latest product information visit:

http://www.pericom.com/products/timing/oscillators/KX251/

For test circuit go to:

http://www.pericom.com/pdf/sre/tc_hcmos2.pdf

For soldering reflow profile and reliability test ratings go to:

http://www.pericom.com/pdf/sre/reflow.pdf

For tape and reel information go to:

http://www.pericom.com/pdf/sre/tr_2520_xo.pdf

14-0033