
37
KT14 Series SMD Crystal Clock Oscillators
Temperature Compensated
FEATURES
1) Ultra low profile SMD
type (9.0x7.0x1.7mm)
2) Fequency adjustment
free after reflow
soldering process
3) AFC function available
(option)
4) 2.8, 3.0, 3.3V
drive available
5) 2000 pieces per reel
6) Sold in increments of
2000 pieces
SPECIFICATIONS
HOW TO ORDER
KT14 - E C T 28 L - 19.440M T
1
2
3 4
5
6
7
8
1 Type
2
Frequency stability: D=±2ppm, E=±2.5ppm, K=±5ppm
3 Lower operating temp.: C=-30°C; E=-20°C, G=-10°C
4 Upper operating temp.: R=60°C; T=70°C; V=80°C
5 Supply voltage: 28=2.8V; 50=3.0V
6 AFC function; V=with; N=without; L=with (trimmerless)
7 Frequency: See table below.
8 Packaging: T=Tape and reel
Parameters
Code
Specification
Unit
Remarks
PHS
Cellular
2.8V±5%
3.0V±5%
3.3V±5%
Supply voltage
Vcc
2.8V±5%
V
—
Output Frequency
Fout
19.200
13.000
14.850
19.200
19.680
14.400
16.800
19.440
19.800
MHz
—
Operating Temp.
Storage Temp.
Topr
Tstr
-10 ~ 60
-20 ~ 70
±2.5 max.
-30 ~ 80 max.
-40 ~ 85
±2.0 max.
±2.5 max.
°C
°C
—
—
Frequency Stability
f/fo
ppm
vs. Temp. (After Reflow)
±0.2 max.
±0.3 max.
±1.0 max.
1.0 min.
2.0 max.
vs. Load
vs. Voltage
1 Year
Load 10K/10pF
No Load
—
1.5V±1V, 2.5±1V
—
Aging Rate
Output Voltage
Supply Current
Trimmer Control Range
Voltage Control Range
Harmonics
DIMENSIONS
Aging
Vout
Icc
f/C
f/V
—
ppm/year
Vp-p
mA
ppm
ppm
dBc
±3.0 min.
—
—
ex: ±8.0 ~ ±15.0
-3.0 max.
RECOMMENDED LAND PATTERN
(#3 Pin
1.40
1.40
3.68
1
1
4
(VCC)
#2 Pin
(N.#4 Pin
con
)
Pad No.
1
2
3
4
Function
NC or Vcon
GND/CASE GND
OUTPUT
+Vcc
±
5
°
C
Peak: 230
°
C min.
180
150
±
10
°
C
50
60 sec.
60 sec.
Time (sec.)
100
150
180
200
250
Temperature
(C
°
)
0
RECOMMENDED REFLOW
PROFILE (IR REFLOW)
Synchronized
C1: Probe Capacitance (10pF)
4
3
1
2
10k
±
10%
C1
Oscillator
A
V
Power
Supply
Vcc
Vcon or N.C.
TEST CIRCUIT (AMPLITUDE)
TEST CIRCUIT
(HARMONICS & FREQUENCY)
Spectrum
4
3
1
2
10k
±
10%
110%
±
Oscillator
Power
Supply
Vcc
A
V
Vcon or N.C.
9.0
±
0.3
Freq. Adj.
#1 pin mark
Marking
7
±
0
5.08
±
0.15
(
1
±
0
1
±
0
1.4
0.5
1