KC2520B Datasheet

kHz Range Crystal Oscillators
Clock Oscillators Surface Mount Type
KC2520B Series(32.768kHz)
CMOS/ 1.8V, 2.5V, 3.3V, 5.0V Compatible/ 2.5×2.0mm
Features
• Miniature ceramic package
2.5 (L) ×2.0 (W) ×0.7 (H) mm (Typ.)
• Highly reliable with seam welding
• CMOS output
• Supply voltage 1.8/ 2.5/ 3.3/ 5.0V
Wide operating voltage range 1.6 to 5.5V
• Low current consumption
Applications
• Watches
How to Order
KC2520B 32K7680 C M 2 E 00
①
②
③④⑤⑥ ⑦
① Type (2.5×2.0mm SMD)
② Output Frequency (32.768kHz)
③ Output Type (CMOS)
④ Supply Voltage (1.8V, 2.5V, 3.3V, 5.0V Compatible)
⑤ Frequency Tolerance (See Specifications)
⑥ Symmetry/ INH Function
(45/ 55%, Stand-by)
⑦ Customer Special Model Suffix
(STD Specification is “00”)
RoHS Compliant
Packaging (Tape & Reel 2000 pcs./ reel)
Specifications
Item
Symbol
Output Frequency Range
fo
Frequency Tolerance
Initial (25°C), Stability (−40 to 85°C), Voltage change
Aging (@1year)
Other (load change, shock and vibration)
f_tol
Storage Temperature Range
Operating Temperature Range
Max. Supply Voltage
Supply Voltage
Current Consumption
(Maximum Loaded/ 1.6≤VCC≤2.0V)
Current Consumption
(Maximum Loaded/ 2.0<VCC≤2.8V)
Current Consumption
(Maximum Loaded/ 2.8≤VCC≤3.63V)
Current Consumption
(Maximum Loaded/ 3.63≤VCC≤5.5V)
Stand-by Current
Symmetry
Rise/ Fall Time
(10% VCC to 90% VCC Maximum Loaded)
Low Level Output Voltage
High Level Output Voltage
Output Load
Low Level Input Voltage
High Level Input Voltage
Disable Time
Enable Time
Start-up Time
Specifications
Min.
Max.
32.768
−25
+25
−3
+3
−4
+4
−55
+125
−40
+85
−0.3
+7.0
+1.6
+5.5
Conditions
T_stg
T_use
—
VCC
Units
kHz
×10−6
°C
°C
V
V
—
120
—
126
—
130
—
140
—
45
10
55
μA
%
—
50
ns
—
90% VCC
—
—
70% VCC
—
—
—
10% VCC
—
15
30% VCC
—
100
2
5
μA
ICC
I_std
SYM
@50% VCC
tr/ tf
VOL
VOH
L_CMOS
VIL
VIH
t_dis
t_ena
t_str
IOL=1mA
IOH=−1mA
CMOS Output
@Minimum operating voltage to be 0 sec.
V
pF
V
ns
ms
ms
Note: All electrical characteristics are defined at the maximum load and operating temperature range.
Dimensions
(Unit: mm)
Recommended Land Pattern
2.5
(Unit: mm)
#2
#1
0.95
Plating: Ni+Au
Tolerance: ±0.1
1.45
#4
0.6
#3
0.6
2.0
0.6
1.85
0.7
0.9
0.7
0.7
0.15
0.15
Pad Connections
#1 INH
#2 Case GND
#3 Output
#4 VCC
INH Function
Pad1
Pad3 (Output)
Open
Active
"H" Level
Active
"L" Level High Z (No-Oscillation)
1.05
Note: A capacitor of value 0.01μF between VCC
and GND is recommended.