ICS9248-199 Datasheet, PDF (11/21 Pages) Integrated Circuit Systems – Frequency Generator for SIS 735/740 with AMD K7 Processor

ICS9248-199
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
T_A = 0 - 70°C; Supply Voltage V_DD = 3.3 V +/-5% (unless otherwise stated)
PARAMETER
SYMBOL
CONDITIONS
Input High Voltage
V_IH
Input Low Voltage
V_IL
Operating Supply Current
I_DD
I_DDL
Power Down
PD
C_L =30 pF PCI, SDRAM, 20 pF other outputs
Input frequency
F_i
V_DD = 3.3 V
Input Capacitance¹
Transistion Time¹
Settling Time¹
Clk Stabilization¹
Skew¹
C_IN
C_INX
T_trans
T_s
T_STAB
T_{CPU - PCI}
Logic Inputs
X1 & X2 pins
To 1st crossing of target frequency
From 1st crossing to 1% of target frequency
From V_DD = 3.3 V to 1% of target frequency
V_T = 1.5 V; V_TL = 50% V_DD
Skew¹
T_{CPU - AGP} ^VT ^{= 1.5 V; V}TL ^{= 50% V}DD
1_{Guaranteed by design, not 100% tested in production.}
MIN TYP MAX UNITS
2
V_DD + 0.3 V
V_SS - 0.3
0.8
V
134
180
mA
27
39
280
600
12 14.318 16
mA
uA
MHz
5
pF
27
45
pF
3
ms
ms
11
15
ms
1
1.8
4
ns
1
1.6
4
ns
0376E—12/23/02
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