ISM92 Series
Revised B: 06/09 Page 2 of 6 www.ilsiamerica.com
NOTE: A 0.01 µF bypass capacitor is recommended between Vcc (pin 4) and GND (pin 2) to minimize power supply noise.
*Not available at all frequencies. ** Not available for all temperature ranges. *** Frequency, supply, and load related parameters.
Pin Connections
Pin 1
Enable / Disable
Pin 2
Ground
Pin 3
Output
Pin 4
Vdd
Dimension Units: mm
Product Features:
Applications:
Low Jitter, Non-PLL Based Output
CMOS/TTL Compatible Logic Levels
Compatible with Leadfree Processing
Fibre Channel
Server & Storage
Sonet /SDH
802.11 / Wifi
T1/E1.T3/E3
System Clock
Frequency
1.5 MHz to 125.000 MHz
Output Level
HC
-MOS
TTL
‘0’ = 0.1 Vcc Max., ‘1’ = 0.9 Vcc Min.
‘0’ = 0.4 VDC Max., ‘1’ = 2.4 VDC Min.
Duty Cycle
Specify 50% ±10% or ±5% See Table in Part Number
Guide
Rise / Fall Time
5 nS Max. @ Vcc = +3.3 VDC, 10 nS Max.
@ Vcc = +5 VDC ***
Output Load
Fo < 50 MHz = 10 TTL, Fo > 50 MHz = 5 LSTTL
See Table in Part Number Guide
Frequency Stability
See Frequency Stability Table (Includes room
temperature tolerance and
stability over operating
temperature)
Start-up Time
10 mS Max.
Enable / Disable
Time
100 nS Max.
N.C. or ≥ 70% Vdd = Enable. ≤ 30% Vdd = Disable.
Supply Voltage
See Input Voltage Table, tolerance ±5 %
Current
40 mA Max. ***
Operating
See Operating Temperature Table in Part Number Guide
Storage
-55° C to +125° C
Jitter: RMS(1sigma)
1 MHz
-75 MHz
76 MHz
-125 MHz
5 pS RMS (1 sigma) Max. accumulated jitter (20K
adjacent periods)
3 pS RMS (1 sigma) Max. accumulated jitter (20K
adjacent periods)
Max Integrated
1 MHz
-75 MHz
76 MHz-125 MHz
1.5 p
S RMS (1 sigma -12KHz to 20MHz)
1 pS RMS (1 sigma -12KHz to 20MHz)
Max Total Jitter
1 MHz
-75 MHz
76 MHz-125 MHz
50
pS p-p (100K adjacent periods)
30 pS p-p (100K adjacent periods)
Part Number Guide Sample Part Number: ISM91 - 3251BH - 20.000
Package
Input
Voltage
Operating
Temperature
Symmetry
(Duty Cycle)
Output
Stability
(in ppm)
Enable /
Disable
Frequency
ISM92
-
5 = 5.0 V
1 = 0° C to +70° C
5 = 45 / 55 Max.
1 = 10TTL / 15 pF HC-MOS
**E = ±10
H = Enable
- 20.000MHz
3 = 3.3 V
6 = -10° C to +70° C
6 = 40 / 60 Max.
5 = 50 pF HC-MOS (<40 MHz)
**D = ±15
O = N/C
7 = 3.0 V 3 = -20° C to +70° C
6 = 30 pF **F = ±20
2 = 2.7 V
4 = -30° C to +75° C
**A = ±25
6 = 2.5 V
2 = -40° C to +85° C
B = ±50
1 = 1.8 V*
C = ±100
ISM92 Series
Revised B: 06/09 Page 3 of 6 www.ilsiamerica.com
Pb Free Solder Reflow Profile: Typical Application:
*Units are backward compatible with 240C reflow processes
Package Information:
MSL = N.A. (package does not contain plastic, storage life is unlimited under normal room conditions).
Termination = e4 (Au over Ni over W base metallization).
Tape and Reel Information:
Quantity per
Reel
1000
A
16 ± 0.3
B
8 ± 0.2
C
7.5 ± 0.2
D
17.5 ± 1
E
50 / 60 / 80
F
180 / 250
