+/+…when timing is critical
C9819
133 MHz I2C Clock Generator for Mobile Pentium®III / Rambus Systems
Preliminary
Maximum Ratings
This device contains circuitry to protect the inputs
against damage due to high static voltages or electric
field; however, precautions should be taken to avoid
application of any voltage higher than the maximum
rated voltages to this circuit. For proper operation, Vin
and Vout should be constrained to the range:
Maximum Input Voltage Relative to VSS: VSS - 0.3V
Maximum Input Voltage Relative to VDD: VDD + 0.3V
Storage Temperature:
Operating Temperature:
Maximum ESD protection
Maximum Power Supply:
-65ºC to + 150ºC
0ºC to +85ºC
2000V
5.5V
VSS<(Vin or Vout)<VDD
Unused inputs must always be tied to an appropriate
logic voltage level (either VSS or VDD).
DC Parameters
Characteristic
Symbol
Min
Typ
Max
1.0
Units
Vdc
Vdc
Vdc
Vdc
µA
Conditions
Input Low Voltage
Input High Voltage
Input Low Voltage
Input High Voltage
VIL1
VIH1
VIL2
VIH2
IIL
-
-
Note 1
2.0
-
-
-
-
-
1.0
-
Note 2
2.2
-66
Input Low Current (@VIL =
VSS)
-5
For internal Pull up resistors, Note 1
and Note 3
Input High Current (@VIL =
VDD)
IIH
5
µA
Tri-State leakage Current
Dynamic Supply Current
Dynamic Supply Current
Static Supply Current
Input pin capacitance
Output pin capacitance
Pin capacitance
Ioz
Idd3.3V
Idd2.5V
Isdd
-
-
10
160
90
µA
mA
mA
µA
pF
pF
nH
pF
V
-
-
Sel133/100# = 1, Note 4
Sel133/100# = 1, Note 4
-
-
-
-
400
5
PwrDwn = 0, Sel133/100# = x, Note 4
Cin
-
-
Cout
Lpin
-
-
6
-
-
34
7
Crystal pin capacitance
Crystal DC Bias Voltage
Crystal Startup time
Cxtal
VBIAS
Txs
32
0.3Vdd
-
38
Measured from Pin to Ground. Note 5
From Stable 3.3V power supply.
Vdd/2
-
0.7Vdd
40
µS
VDD = VDDR = VDDP = VDD48 = VDD3V66 = 3.3V ±5%, VDDC = VDDC/2 = VDDI = 2.5 + 5%, TA = 0ºC to +85ºC
Note1:
Note2:
Note3:
Note4:
Note5:
Applicable to input signals: Sel133/100#, PWRDN#, CPU_stp#, PCI_stp#.
Applicable to SDATA, and SCLK.
Although internal pull-up resistors have a typical value of 250K, this value may vary between 200K and 500K.
All outputs loaded as per table 6.
Although the device will reliably interface with crystals of a 17pF – 20pF CL range, it is optimized to interface with a typical CL = 18pF
crystal specifications.
INTERNATIONAL MICROCIRCUITS, INC 525 LOS COCHES ST.
Rev 1.0
11/1/1999
MILPITAS, CA 95035, USA TEL: 408-263-6300 FAX 408-263-6571
Page 10 of 17
http://www.imicorp.com
CYPRESS [ CYPRESS ]
