Document No. 008-0356-0 Page 1- 2 Rev. C
www.ctscorp.com
Model TC25
32.7680 kHz Clock Oscillator
FEATURES
• 32.7680 kHz Frequency Reference
• Package Size 2.5mm x 2.0mm
• Fundamental Crystal Design
• Hermetic Ceramic Package
• Frequency Stability, ±50 ppm Standard
• Operating Temperature, -40°C to +85°C Standard
• Tape & Reel Packaging, EIA-418
• RoHS/Green Compliant [6/6]
APPLICATIONS
Model TC25 is ideal for use in a wide range of communication equipment,
Measurement equipment, industrial applications, automotive electronics, wireless
communications, PDAs, mobile phones and notebooks.
ORDERING INFORMATION
* Temperature codes A and C. Example Part Numbers:
TC25L3I32K7680
TC25L5I32K7680
Contact your local CTS Representative or CTS Customer Service for availability.
TC25
OPERATING TEMPERA T UR E RANG E
A = -10°C to +60°C
C = -20°C to +70°C
I = -40°C to +85°C
Not all performance combinations and fre que ncies may be a vaila ble .
SUPPLY VOLTAGE
FREQUENCY IN MHz
K - indicates kHz and decimal point.
7680K32
FREQUENCY STABILITY
6 = ± 20 ppm *
5 = ± 25 ppm
3 = ± 50 ppm
V = +1.5V
M = +1.8V
N = +2.5Vdc
L = +3.3Vdc
PACKAGING INFORM ATION [Reference Only]
Device quantity is 1k pcs. minimum and 3k pcs. maximum per 180mm reel.
Document No. 008-0356-0 Page 2 - 2 Rev. C
Model TC25
32.7680 kHz Clock
ELECTRICAL CHARACTERISTICS
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT
Frequency fo- 32.7680 kHz
Operating Mode - - -
Output Type - -
Supply Voltage VCC ±10% V
Current ICC 15pF Load - - 3.0 mA
Frequency Stability Δf/foSee Ordering Information ppm
-10 - +60
-20 - +70
-40 - +85
Load Capacitance CLCMOS - 15 - pF
Output Voltage Levels
Logic '1' Level VOH CMOS Load 0.9VCC --
Logic '0' Level VOL CMOS Load - - 0.1VCC
Rise and Fall Time Tr,Tf---50ns
Output Duty Cycle SYM @ 50% Level 45 - 55 %
Start-up Time TSApplication of VCC -5.010ms
Enable Function
Enable Input Voltage VIH Pin 1 Logic '1', Output Enabled 0.7VCC --
Disable Input Voltage VIL Pin 1 Logic '0', Output Disabled - - 0.3VCC
Aging Δf/fo@ +25°C, 1st year - 3.0 5.0 ± ppm
Storage Temperature Range TSTR - -55 - +125 °C
Operating Temperature Range TA-°C
ELECTRICAL PARAMETERS
AT Fundamental
HCMOS
1.5, 1.8, 2.5, 3.3
20, 25, 50
V
V
MECHANICAL SPECIFICATIONS
TC25 PACKAGE DRAWING
MARKING INFORMATION
1. TC25 – CTS Model Series.
2. ● – Pin 1 identifier.
3. v – Voltage code.
[L=3.3V, N=2.5V, M=1.8V, V=1.5V]
4. D – Date code. See Table I for codes.
Complete CTS part number, frequency
value, date code and manufacturing site code
information must appear on reel and carton labels.
T
C25
● vD
TABLE I – DATE CODE
2001 2005 2009 2013 2017 A B C D E F G H J K L M
2002 2006 2010 2014 2018 N P Q R S T U V W X Y Z
2003 2007 2011 2015 2019 a b c d e f g h j k l m
2004 2008 2012 2016 2020 n p q r s t u v w x y z
MONTH JAN FEB MAR DEC
YEAR AUG SEP OCT NOVAPR MAY JUN JUL
NOTES
1. Termination pads (e4); barrier plating is
nickel [Ni] with gold [Au] flash plate.
2. Reflow conditions per JEDEC J-STD-020;
260°C maximum, 20 seconds.
3. MSL = 1.
SUGGESTED SOLDER PAD GEOMETRY
CBYPASS should be ≥ 0.01 uF.
PIN ASSIGNMENTS
PIN SYMBOL DESCRIPTION
1 EOH Enable Input
2 GND Circuit & Package Ground
3 Output RF Output
4 VCC Supply Voltage
