TD-020811 Rev. E
PWR
Supply
mA
M
VM
OSC.
pin 1
pin 14
pin 7
pin 8
O/P Load
incl Probe Cl
OUT
GND
OUT
Vdd
Option
Specifications subject to change without notice.
Designed to meet today's
requirements for tighter
frequency stability tolerance
while reducing unit cost.
14 Pin Dip,
3.3V & 5V, HCMOS/TTL
CXOH / CXOHV Model
1MHz to 38MHz
±1ppm to ±5ppm
±0.5ppm Max
±0.3ppm Max
-40°C to 85°C
-55°C to 120°C
3.3V or 5V ± 5%
±3ppm Min
Voltage Trim Pin 1
15mA Typ, 30mA Max
HCMOS/TTL
40/60% Max @ 50% Vdd
45/55% Max
4ns Typ, 10ns Max
"0" = 10% Vdd Max
"1" = 90% Vdd Min
15pF/10TTL Max
-100dBc/Hz
-130dBc/Hz
-140dBc/Hz
-145dBc/Hz
-150dBc/Hz
<1ppm Max/Yr
Frequency Range:
Frequency Stability:
Freq. Stability vs Volt:
Freq. Stability vs Load:
Temperature Range:
Storage:
Input Voltage:
Mech. Trim. Range:
(Option V)
Input Current:
Output:
Symmetry:
(Option Y)
Rise/Fall Time:
Output Voltage:
Load:
Phase Noise Typ.:
10Hz
100Hz
1KHz
10KHz
100KHz
Aging:
CXOH
CXOHV - 4 B C 3 Y - 25.000
Crystek Part Number Guide
#6
#8
#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
Example:
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
#1
#3
#4
#5
#7
#2
Table 1
Operating
Temperature
Freq. Stability (± ppm)
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
1.5
2.0
2.0
2.0
2.0
2.5
2.5
2.5
2.5
2.5
2.5
3.0
3.0
3.0
3.0
3.0
3.0
3.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
AB
C
D
E
F
A
B
C
D
E
F
G
H
1.0
P
2.5
3.0
2.0
2.0
2.0
CRYSTEK
Freq
Part no
DC
.720
(18.30)
.472
(12.00)
.300
(7.62)
#7
#8
#14
#1
*A
.098
(2.50)
.157
(4.00)
.600
(15.24)
PIN
Function
1
7
8
14
VT or NC
GND
OUT
Vcc
.178
(4.50)
.197
(5.00)
*A
.300
(7.62)
.150
(3.81)
.030
(0.76)
.075
(1.90)
Suggested PCB Layout
.150
(3.81)
.300
(7.62)
.051
(1.30)
ID=
.360
(9.14)
.157
(4.00) Min
.039
(1.00)
.020
(0.50)
All dimensions are Max unless otherwise specified.
Dimensions inches (mm)
± 5ppm Min
(5V) 2.5V ± 2.5V
(3.3V) 1.65V ± 1.65V
Voltage Trim Pin 1:
Control Voltage:
VCTCXO Specification
24
Temperature Compensated
Crystal Oscillator
Voltage Trim Option
Available
Le
ad
Fre
e
Ro
HS
Co
mp
lian
t