“ T C X O” and
“V C T C X O”
Logic: TTL / HCMOS
Wave Form: Square Wave
MERCURY
Since 1973
SQUARE
Product Summary:
Output Wave Form: Square Wave
TCXO
VCTCXO
Available
Frequency Range
M38T
M39T
M14T
M15T
M8T
M9T
M19T
VM38T
VM39T
VM14T
VM15T
VM8T
VM9T
VM19T
1.2 ~ 156 MHz
1.2 ~ 156 MHz
1.2 ~ 156 MHz
1.2 ~ 156 MHz
1.2 ~ 156 MHz
1.2 ~ 156 MHz
1.2 ~ 156 MHz
M55T
M47T
VM55T
VM19T
1.2 ~ 156 MHz
1.2 ~ 156 MHz
M24T
VM24T
1.2 ~ 156 MHz
M25T
VM25T
1.2 ~ 156 MHz
M28T
VM28T
1.2 ~ 156 MHz
M29T
VM29T
1.2 ~ 156 MHz
M62T
M42T
M64T
M44T
M575T
M63T
VM62T
VM42T
VM64T
VM44T
VM575T
VM63T
M53T
VM53T
Package size (mm),
L x W x Seated height
Thru-Hole Types
Package size (inches),
L x W x Seated height
4 pin DIP
4 pin DIP
4 pin DIP. Hermetically sealed.
4 pin DIP. With trimmer
4 pin DIP. Half size. Hermetically sealed.
4 pin DIP. Half size. With trimmer.
5 pin DIP
Gull Wing Surface Mount Types
4 pin gull wing
4 pin gull wing
4 pin gull wing. Hermetically sealed.
11.7 x 18.4 x 7.3
11.7 x 18.3 x 4.7
12.8 x 20.2 x 8.3
12.8 x 20.2 x 8.3
12.8 x 12.8 x 8.3
12.8 x 12.8 x 8.3
19.8 x 19.8 x 10.0
[0.460 x 0.724 x 0.287]
[0.460 x 0.724 x 0.185]
[0.504 x 0.795 x 0.327]
[0.504 x 0.795 x 0.327]
[0.504 x 0.504 x 0.327]
[0.504 x 0.504 x 0.327]
[0.780 x 0.780 x 0.394]
11.7 x 21.3 x 6.6
11.7 x 21.3 x 4.7
[0.460 x 0.839 x 0.260]
[0.460 x 0.839 x 0.185]
12.8 x 20.2 x 9.3
[0.504 x 0.795 x 0.366]
12.8 x 20.2 x 9.3
[0.504 x 0.795 x 0.366]
12.8 x 12.8 x 9.3
[0.504 x 0.504 x 0.366]
12.8 x 12.8 x 9.3
[0.504 x 0.504 x 0.366]
1.2 ~ 156 MHz
1.2 ~ 156 MHz
1.2 ~ 156 MHz
1.2 ~ 156 MHz
1.2 ~ 156 MHz
In development
4 pin gull wing. With trimmer.
4 pin gull wing. Half size. Hermetically
sealed.
4 pin Gull wing. Half size. With trimmer.
Leadless Surface Mount Types
6 pad FR4 base. 2.5 mm H
4 pad FR4 base. 2.5mm H
6 pad FR4 base. 4.7 mm H
4 pad FR4 base. 4.7 mm H
4 pad epoxy module base
4 pad epoxy module base
9.6 x 11.4 x 2.5
9.6 x 11.4 x 2.5
9.6 x 11.4 x 4.7
9.6 x 11.4 x 4.7
5 x7.5 x 3.3
6 x3.5 x 3.1
[0.378 x 0.449 x 0.098]
[0.378 x 0.449 x 0.098]
[0.378 x 0.449 x 0.185]
[0.378 x 0.449 x 0.185]
[0.197 x 0.295 x 0.130]
[0.236 x 0.138 x 0.122]
In development
4 pad epoxy module base
5 x3.2 x 2.9
[0.197 x 0.126 x 0.114]
Note: Mechanical frequency tuning by built-in internal trimmer is standard for all models except for models M575T, VM575T,
M63T, VM63T, M53T and VM53T. Please specify when ordering if trimmer is not required.
Note: Because cleaning agent normally degrades the trimmer in the non-hermetically sealed packages, cleaning through washing
cycles is not recommended. If cleaning is mandatory please choose hermetically sealed packages or no-trimmer option.
MERCURY www.mercury-crystal.com
Taiwan: TEL (886)-2-2695-7099, FAX (886)-2-2695-7473, e-mail: sales-tw@mercury-crystal.com
U.S.A.: TEL (1)-909-466-0427, FAX (1)-909-466-0762, e-mail: sales-us@mercury-crystal.com
MERCURY
Page 1 of 8
Date: Dec. 1, 2001
Rev. 0
“ T C X O” and
“V C T C X O”
General Specifications
Logic: TTL / HCMOS
Wave Form: Square Wave
MERCURY
Since 1973
(at+25°C and specified input voltage)
Frequency Range
Output Wave From
Mechanical Frequency Tuning
1.2 MHz ~ 156.0 MHz (package dependent)
Square wave. Wave form code is “T”
Models with mechanical trimmer: Adjustable to the nominal frequency
Models without mechanical trimmer: ±3 ppm at +25°C
9.6, 10.0, 12.8, 13.0, 14.4, 15.36, 16.384, 19.2, 19.440, 19.68 MHz
±1 ppm , ±1.5 ppm, ±2.0 ppm, ±2.5 ppm, ±3 ppm, ±5 ppm,
or ±10 ppm over specified operating temperature range
±1.0 ppm max. first year at +25°C
±0.3 ppm max. for a ±5% input voltage change
±0.3 ppm max. for a ±10% loading condition change
±1 ppm max. 1 reflow and measured 24 hours afterwards
0°C to +60°C
0°C to +70°C
-10°C to +60°C
-20 °C to +70°C
-30°C to +60°C
-30°C to +75°C
±5 ppm stability for -40°C to +85°C
±3 ppm min. (from built-in trimming capacitor)
Input Voltage Range (VDD)
Logic
+3.0V (voltage code is “3”)
+5.0V (voltage code is “5”)
TTL
2.4V min.
2.4V min.
HCMOS
90% VDD min.
0.4V max.
90% VDD min.
0.4V max.
Initial Calibration Tolerance
Standard Frequencies (partial list)
Frequency Stability
vs Temperature
vs Aging
vs Voltage Change
vs Load Change
vs reflow (SMD models)
Typical Operating Temperature
Range (examples)
Output Voltage
Level
Logic High “1”
Logic Low “0”
Rise Time and Fall Time
Duty Cycle (Symmetry)
Start-up Time
Enable / Disable Option
VCTCXO
only
Current Consumption
Electrical Frequency Tuning
(from voltage control pin)
Slope Polarity
Linearity
Output Load
SSB Phase
Offset
Noise
M38T5-10.000
at +25°C
Output Format
Storage Temperature
TTL
HCMOS
TTL
HCMOS
TTL
10% VDD max.
10% VDD max.
10 nano. sec. max. from 0.5 V to 2.4V
10 nano. sec. max. 20% ↔ 80% of waveform
50%±10% measured at +1.4V D.C.
HCMOS
50%±10% measured at 50% VDD
10 m. sec. max.
Output Enable. Tri-states output when low. Internal pull-up.
Note: Available in certain models only and TCXO products only.
25 mA max.
30 mA max.
±5~±12 ppm for +1.5 V±1.5V
±6~±12 ppm for +2.5 V±2.0 V
(up to ±100 ppm is also available for some of the packages)
Positive: Increasing control voltage increases output frequency.
Negative slope is also available
10 % max.
15 pF
10 Hz
100 Hz
1 kHz
10 kHz
100 kHz
-82 dBc/Hz
-145 dBc/Hz
-110 dBc/Hz
-130 dBc/Hz
-140 dBc/Hz
AC block, DC coupled
-40°C to +85°C
Note : TCXO products ordered without mechanical and electrical frequency tuning should have a frequency tolerance of ±3
ppm (at +25°C) and the frequency stability over temperature will be from that measured value.
MERCURY
Page 2 of 8
Date: Dec. 1, 2001
Rev. 0
“ T C X O” and
“V C T C X O”
Logic: TTL / HCMOS
Wave Form: Square Wave
MERCURY
Since 1973
Part Number Format and Examples:
Package Code
_ or V
M_ _
“3” for +3.0 V
“5” for +5.0V
T
“ ” Blank for TCXO
“V“ for VCTCXO
Input
Voltage
Frequency Stability
in ± ppm
Frequency
Wave Form Code
“T” for square wave
Stability
Temperature Range
Nominal Frequency
in MHz
Operating Temp.
Range in °C
M44T5-12.800-1.0/-20+70
represents 12.800 MHz TCXO in M44 package with stability of ±1 ppm from
–20°C to +70°C, TTL/CMOS square wave output, +5.0V input voltage.
VM14T3-13.000-2.5/-30+75
represents 13.0 MHz VCTCXO in M14 package with stability of ±2.5 ppm
from –30°C to +75°C, TTL/CMOS square wave output, +3.0 V input voltage.
Output Wave Form
Phase Noise
M38T5-10.000
dBc/Hz
-80
-90
-100
-110
-120
-130
-140
Ground
-150
10 Hz
100 Hz
TTL / CMOS Square Wave TCXO (VCTCXO) Test Circuit:
Oscilloscope
1234567890
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
Vcc
14
8
15
pF *
Top view
SUPPLY
VOLTAGE
1
+
A
V
-
7
1 kHz
Frequency counter
* Include all the proble and stray capacitances
0.01
uF
CONTROL
VOLTAGE
MERCURY
Page 3 of 9
Date: Dec. 1, 2001
Rev. 0
offset
10 kHz