ICS951901 Datasheet, PDF (8/19 Pages) Integrated Circuit Systems – Programmable Frequency Generator & Integrated Buffers for Pentium III Processor

ICS951901
Absolute Maximum Ratings
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Logic Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . GND –0.5 V to V_DD +0.5 V
Ambient Operating Temperature . . . . . . . . . . 0°C to +70°C
Case Temperature . . . . . . . . . . . . . . . . . . . . . . 115°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . –65°C to +150°C
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These
ratings are stress specifications only and functional operation of the device at these or any other conditions above those
listed in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions
for extended periods may affect product reliability.
Electrical Characteristics - Input/Supply/Common Output Parameters
TA = 0 - 70°C; Supply Volt age VDD = 3.3 V +/-5%VDDL = 2.5 V +/-5% (unless otherwise stated)
PARAMETER SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Input High Voltage
V_IH
2
V_DD + 0.3 V
Input Low Voltage
V_IL
V_SS - 0.3
0.8
V
Supply Current
I_DD
C_L=30 pF, CPU @ 66, 100 MHz
Power Down
PD
390 400 mA
300 600
mA
Input frequency
Fi
Input Capacitance¹
C_IN
V_DD = 3.3 V;
Logic Inputs
12 14.32 16
5
MHz
pF
C_INX
X1 & X2 pins
27
45
pF
Transition Time
T_trans
To 1st crossing of target Freq.
3
Settling Time
Clk Stabilization¹
T_S
T_STAB
From 1st crossing to 1% target Freq.
From V_DD= 3.3 V to 1% target Freq.
3
ms
Skew
T_CPU-PCI
CPUV_T= 1.5 V PCI V_T=1.25V
1
1.9
4
ns
Skew
T_CPU-SDRAM CPUV_T= 1.5 V SDRAM V_T=1.25 -500 -300
0
ps
1 _{Guaranteed by design, not 100% tested in production.}
0670B—07/15/04
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