ICS281
TRIPLE PLL FIELD PROG. SPREAD SPECTRUM CLOCK SYNTHESIZER
EPROM CLOCK SYNTHESIZER
AC Electrical Characteristics
Unless stated otherwise,
VDD = 3.3 V ±5%,
Ambient Temperature -40 to +85° C
Parameter
Input Frequency
Output Frequency
Output Rise/Fall Time
Output Rise/Fall Time
Output Rise/Fall Time
Symbol
F
IN
Conditions
Fundamental crystal
Clock input
VDDO=VDD
1.8 V<VDDO<2.8 V
Min.
5
3
0.314
0.314
Typ.
Max. Units
27
166
200
150
MHz
MHz
MHz
MHz
ns
ns
ns
t
OF
t
OF
t
OF
80% to 20%, high drive,
Note 1
80% to 20%, low drive,
Note 1
80% to 20%, high drive,
1.8 V<VDDO<2.8
Note 2
Note 2
Configuration Dependent
PLL lock-time from
power-up
PDTS goes high until
stable CLK output,
Spread Spectrum Off
PDTS goes high until
stable CLK output,
Spread Spectrum On
40
1.0
2.0
2.0
Duty Cycle
Output Frequency Synthesis Error
Power-up Time
49-51
TBD
4
0.6
60
10
2
%
ppm
ms
ms
4
7
ms
One Sigma Clock Period Jitter
Maximum Absolute Jitter
Note 1: Measured with 15 pF load.
t
ja
Configuration Dependent
Deviation from Mean.
Configuration Dependent
50
+200
ps
ps
Note 2: Duty Cycle is configuration dependent. Most configurations are min 45% / max 55%.
Thermal Characteristics
Parameter
Thermal Resistance Junction to
Ambient
Symbol
θ
JA
θ
JA
θ
JA
θ
JC
Conditions
Still air
1 m/s air flow
3 m/s air flow
Min.
Typ.
78
70
68
37
Max. Units
°
C/W
°
C/W
°
C/W
°
C/W
Thermal Resistance Junction to Case
IDT™ / ICS™
TRIPLE PLL FIELD PROG. SPREAD SPECTRUM CLOCK SYNTHESIZER 6
ICS281
REV F 051310
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
