J -LEADED • PLASTIC MOLDED • SURFACE MOUNT
CRYSTAL CLOCK OSCILLATORS
ASM Series
FEATURES:
• Industry Standard J-Leaded Terminals.
• Plastic Molded SMD.
• HCMOS and TTL Compatible.
• Tristate Enable / Disable.
• Extended Temperature -40°C to +85°C option on selected frequencies.
STANDARD SPECIFICATIONS
PARAMETERS
ASM
3.5MHz -
ASMT
ASMH
Frequency Range
25 MHz
Operation Mode
Fundamental,
70 MHz
Frequency Range
(F
o
)
1 MHz -
AT
Operating Temperature
-10°C to + 60° C
(See Options)
Operating
0°C to + + 125° C
Storage Temperature(T
OPR
)
-55°C to 70°C
(See Options)
Temperature
Frequency Tolerance (T
STO
)
±50 ppm max. +85°C
Storage Temperature
@
25°C
-40°C to
(See Options)
Frequency Stability over F
o
)
±50 ppm max.
(See Options)
Frequency Stability
(
∆F
/ Temp.
± 100ppm max.
(See Options)
Equivalent Series Resistance
200
Ω
for Vdc ± 10% F < 4.0 MHz
Supply Voltage
(V
dd
)
5 3.5 MHz <
(ESR) Maximum
150
Ω
for 4.0 MHz < F < 6.0 MHz
25 m A max. for (F < 30 MHz)
(I
dd
)
Input Current
100
Ω
for 6.0 MHz < F < 10.0 MHz
_
35
Ω
max. MHz < F MHz)
80 m Afor 10for (F < 70 < 14.0 MHz
_ _
45/55% max. for F < 10 25
50
Ω
for 14 MHz < F <MHz MHz
Duty Cycle or Symmetry
40 / 60% pF max. F > 10 MHz
(See Options & Note 1)
Shunt Capacitance C
0
7 max. for
Rise and Fall
8 ns max. for
Option)
MHz - 40 MHz
Load Capacitance C
L
16 p F
(See
F= 1
Drive Level
100 µΩmax. for F> 40 MHz
Times
(T
R
/
T
F
)
6 ns max.
Aging
@
25° C First Year
10TTL ± 5 pp m max. < 50 MHz) 15 pF (50pF max.)
10TTL (
for
F _
15 pF
5TTL (
for
F> 50 MHz) 15 pF (30pF max.
Output Load
(50 pF max.)
for F > 50 MHz)
Output Voltage
(V
OH
)
(V
OL
)
(T
OSC
)
0.9 * V
dd
min.
0.4 V
dc
max.
2.4 V
dc
min.
0.4 V
dc
max.
10 ms max.
0.9 * V
dd
min.
0.1 * V
dd
max.
Dimensions: Inches (mm)
RECOMMENDED
LAND PATTERN
Start-up Time
Output Disable /
_
100 ns max. “1” or Open: Oscillation
V
IH
> 2.2V
Enable Time
(See Note 2)
“0”: Output disabled in high impedance (Hi Z) V
IL
< 0.8V
Note 1:
Option -S (Symmetry level measured at 1/2 Vdd for ASM and ASMH, and
at 1.4 Vdc for ASMT.
Note 2:
Pin 1 has internal pull-up resistor which allows pin 1 to be left floating (enable high)
For test circuit, waveforms, please see page 67.
Environmental and mechanical specifications on page 68, Group 2.
Marking, see page 78. Tape and Reel (1,000 pcs./ reel), See, pages 74-75.
Connect a By-Pass capacitor 0.01
µ
F between Vdd and GND. See page 60.
ORDERING OPTIONS
ASM X - Frequency - Temperature - Frequency Stability
-
Duty Cycle - 50 - Packaging
Blank or
H or T
-S for 45 / 55%
@
1
/
2 Vdd
-S1 for 45 / 55%
@
1.4 Vdc
-R
-K
-H
-C
for ± 25 ppm max.
for ± 30 ppm max.
for ± 35 ppm max.
for ± 50 ppm max.
-T
(Tape & Reel)
50 pF load
output drive
PIN
NUMBER
FUNCTION
-D for -10°C
XX.XXXXX MHz -E for -20°C
-F for -30°C
-N for -30°C
-L for -40°C
to + 60°C
to + 70°C
to + 70°C
to + 85°C
to + 85°C
1
7
8
14
Tristate E/D
GND / Case
Output
V
dd
ABRACON IS
ISO 9001 / QS 9000
CERTIFIED
NOTE: Left blank if standard
•
All specifications and markings subject to change without notice
ABRACON
29 Journey • Aliso Viejo, CA 92656 • USA
(949) 448-7070
•
F
AX
: (949) 448-8484
E-
MAIL
:
abinfo
@
abracon.com •
I
NTERNET
A
DDRESS
:
www.abracon.com
®
- 35 -
C O R P O R AT I O N
嵌入式系统