J -LEADED • PLASTIC MOLDED • SURFACE MOUNT
CRYSTAL CLOCK OSCILLATORS
ASM Series
FEATURES:
• Industry Standard J-Leaded Terminals.
• HCMOS and TTL Compatible.
• Plastic Molded SMD.
• Tristate Enable/Disable.
• Extended Temperature -40°C to +85°C option on selected frequencies.
STANDARD SPECIFICATIONS
PARAMETERS
ASM
ASMT
ASMH
Frequency Range
3.5MHz - 25 MHz
Fundamental, AT
1 MHz - 70 MHz
Operation Mode
Frequency Range
(F )
o
Operating Temperature
-10°C to + 60° C (See Options)
Operating
Storage Temperature
0°C to + 70°C (See Options)
-55°C to + 125° C
Temperature
(TOPR)
@
Frequency Tolerance 25°C
50 ppm max. (See Options)
-40°C to +85°C
Storage Temperature (TSTO
)
Frequency Stability over Temp.
50 ppm max. (See Options)
(
∆
Frequency Stability
F F )
100 ppm max. (See Options)
/
o
Equivalent Series Resistance
200 Ω for 3.5 MHz < F < 4.0 MHz
Supply Voltage
(V
)
5 Vdc 10%
dd
(ESR) Maximum
150 Ω for 4.0 MHz < F < 6.0 MHz
25 mA max. for (F < 30 MHz)
Input Current
(I
)
dd
100 Ω for 6.0 MHz < F < 10.0 MHz
<_
35 mA max. for (F 70 MHz)
80 Ω for 10 MHz < F < 14.0 MHz
<_
45/55% max. for F 10 MHz
_
50 Ω for 14 MHz < F < 25 MHz
40 / 60% max. for F
Duty Cycle or Symmetry
Shunt Capacitance C0
Rise and Fall
Load Capacitance CL
>
10 MHz (See Options & Note 1)
7 pF max.
8 ns max. for F= 1 MHz - 40 MHz
16pF (See Option)
Drive Level
Times
100µΩ max.
5 ppm max.
10TTL (for
(TR / TF)
6 ns max. for F> 40 MHz
@
Aging 25° C First Year
Dimensions: Inches (mm)
<_
50 MHz) 15 pF (50pF max.)
10TTL
F
15 pF
(50 pF max.)
5TTL (for F> 50 MHz)
15 pF (30pF max.
for F > 50 MHz)
Output Load
RECOMMENDED
LAND PATTERN
Output Voltage
(VOH
(VOL
(TOSC
)
0.9 *
0.4
V
dd min.
2.4
0.4
10 ms max.
V
dc min.
0.9
0.1
V
dd min.
*
*
)
Vdc max.
Vdc max.
Vdd max.
Start-up Time
)
Output Disable /
Enable Time (See Note 2)
100 ns max. “1” or Open: Oscillation VIH >_ 2.2V
“0”: Output disabled in high impedance (HiZ) VIL < 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 µF between Vdd and GND. See page 60.
ORDERING OPTIONS
ASM X - Frequency - Temperature - Frequency Stability
-
Duty Cycle - 50
-
Packaging
PIN
FUNCTION
@
@
1
2 Vdd
-S1 for 45 /55% 1.4 Vdc
- T
-S for 45 /55%
/
Blank or
H or T
NUMBER
(Tape & Reel)
-D for -10°C to + 60°C
-E for -20°C to + 70°C
-F for -30°C to + 70°C
-N for -30°C to + 85°C
-L for -40°C to + 85°C
1
7
Tristate E/D
GND / Case
Output
XX.XXXXX MHz
-R for 25 ppm max.
-K for 30 ppm max.
-H for 35 ppm max.
-C for 50 ppm max.
50 pF load
output drive
8
14
V
dd
NOTE: Left blank if standard • All specifications and markings subject to change without notice
ABRACON
ABRACON IS
ISO 9001 / QS 9000
CERTIFIED
®
29 Journey • Aliso Viejo, CA 92656 • USA
- 35 -
(949) 448-7070
•
FAX: (949) 448-8484
C O R P O R A T I O N
E-MAIL: abinfo
@abracon.com • INTERNET ADDRESS: www.abracon.com