Temperature Compensated
Crystal Oscillator
Voltage Trim Option
Available
CXOH / CXOHV Model
14 Pin Dip, 3.3V & 5V, HCMOS/TTL
Frequency Range:
1MHz to 38MHz
±1ppm to ±5ppm
±0.5ppm Max
Frequency Stability:
Freq. Stability vs Volt:
Freq. Stability vs Load:
Temperature Range:
Storage:
±0.3ppm Max
-40°C to 85°C
-55°C to 120°C
3.3V or 5V ± 5%
±3ppm Min
Input Voltage:
Mech. Trim. Range:
(Option V)
Voltage Trim Pin 1
15mA Typ, 30mA Max
HCMOS/TTL
Input Current:
Output:
Designed to meet today's
requirements for tighter
frequency stability tolerance
while reducing unit cost.
Symmetry:
40/60% Max @ 50% Vdd
45/55% Max
(Option Y)
Rise/Fall Time:
Output Voltage:
4ns Typ, 10ns Max
"0" = 10% Vdd Max
"1" = 90% Vdd Min
15pF/10TTL Max
-100dBc/Hz
VCTCXO Specification
Load:
Phase Noise Typ.:
10Hz
Voltage Trim Pin 1:
Control Voltage:
± 5ppm Min
100Hz
1KHz
-130dBc/Hz
(5V) 2.5V ± 2.5V
(3.3V) 1.65V ± 1.65V
-140dBc/Hz
10KHz
-145dBc/Hz
100KHz -150dBc/Hz
<1ppm Max/Yr
Aging:
.720
(18.30)
CXOH
*A
PIN
Function
CRYSTEK
Suggested PCB Layout
.157
1
7
VT or NC
GND
Freq
Part no
DC
.472
(4.00)
.600
.300
.300
(12.00)
8
OUT
(7.62)
(7.62)
.098
(2.50)
(15.24)
.030
14
Vcc
(0.76)
.150
(3.81)
.051
.020
(0.50)
.178
ID=
(1.30)
.150
(4.50)
(3.81)
*A
.075
#1
#7
#8
.197
(1.90)
.300
(7.62)
.157
(4.00) Min
.360
(9.14)
(5.00)
#14
Dimensions inches (mm)
.039
(1.00)
All dimensions are Max unless otherwise specified.
OUT
mA
M
Crystek Part Number Guide
pin 14
pin 8
pin 7
O/P Load
Vdd
OUT
incl Probe Cl
CXOHV - 4 B C 3 Y - 25.000
PWR
Supply
OSC.
Option
#8
#1
#2
#3
#4
#5 #6
#7
VM
GND
pin 1
#1 Crystek TCXO HCMOS/TTL
#2 V or blank = (V = Volt.Trim) (Blank = Mech. Trim)
#3 4 or blank = Height (4 = 4.5mm) (Blank = 5.0mm)
#4 Letter = Operating Temperature (see table 1)
#5 Letter = Frequency Stability (see table 1)
#6 3 or blank = Input Volt (3 = 3.3 volts) (Blank= 5V)
#7 Y or blank = Symmetry (Y=45/55) (Blank = 40/60)
#8 Frequency in MHz: 3 or 6 decimal places
Operating
Freq. Stability (± ppm)
Temperature
Example:
A
1.0
1.5
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.5
2.5
2.5
2.5
2.5
2.5
2.5
3.0
4.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
F
0°C to 50°C
-10°C to 60°C
-10°C to 70°C
-20°C to 70°C
-30°C to 60°C
-30°C to 70°C
-30°C to 75°C
-40°C to 85°C
CXOH-4BC3Y-25.000 = mech. trim, 4.5mm, -10/60, ±2.5ppm, 3.3V, 45/55%, 25.000MHz
CXOHV-4B3CY-25.000 = volt. trim, 4.5mm, -10/60,±2.5ppm, 3.3V, 45/55%, 25.000MHz
B
C
D
E
F
3.0 4.0
3.0
3.0
3.0
3.0
3.0
3.0
D
4.0
4.0
4.0
4.0
4.0
4.0
E
G
H
P
A
B
C
Table 1
TD-020811 Rev. E
Specifications subject to change without notice.
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