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SY89218U Fiches technique(PDF) 6 Page - Micrel Semiconductor

No de pièce SY89218U
Description  Precision 1:15 LVDS Fanout Buffer with 2:1 MUX and Four 첨1/첨2/첨4 Clock Divider Output Banks
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Fabricant  MICREL [Micrel Semiconductor]
Site Internet  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

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Micrel, Inc.
SY89218U
January 2007
6
M9999-012407-B
hbwhelp@micrel.com or (408) 955-1690
Absolute Maximum Ratings
(1)
Supply Voltage (VCC) ................................. –0.5V to +4.0V
Input Voltage (VIN) ......................................... –0.5V to VCC
Termination Current
Source or sink current on VT ......................... ±100mA
Input Current
Source or sink current on IN, /IN..................... ±50mA
VREF-AC Current
(3)
Source or sink current on VREF-AC...................... ±2mA
Operating Ratings
(2)
Supply Voltage (VIN) .......................+2.375V to +2.625V
Ambient Temperature (TA) ....................–40°C to +85°C
Package Thermal Resistance
(4)
TQFP
Still-air (θJA)...............................................35°C/W
Junction-to-board (ψJB) ............................20°C/W
Lead Temperature (soldering, 20sec.)…………….260°C
Storage Temperature (Ts)……………...–65°C to +150°C
DC Electrical Characteristics
(5)
VCC = +2.5V ±5%, TA = –40°C to +85°C, unless otherwise stated.
Symbol
Parameter
Condition
Min
Typ
Max
Units
VCC
Positive Supply Voltage Range
2.375
2.625
V
ICC
Power Supply Current
325
420
mA
RDIFF_IN
Differential Input Resistance
(IN-to-/IN)
90
100
110
RIN
Input Resistance
(IN-to-VT, /IN-to-VT)
45
50
55
VIH
Input HIGH Voltage (IN, /IN)
1.2
VCC
V
VIL
Input LOW Voltage (IN, /IN)
0
VIH–0.1
V
VIN
Input Voltage Swing (IN, /IN)
See Figure 1a, Note 6
0.1
2.5
V
VDIFF_IN
Differential Input Voltage Swing
|IN – /IN|
See Figure 1b
200
mV
VIN_FSI
Input Voltage Threshold that
Triggers FSI
30
100
mV
VREF-AC
Reference Voltage
VCC–1.3
VCC–1.2
VCC–1.1
V
VT_IN
Voltage from Input to VT
1.28
V
LVTTL/CMOS DC Electrical Characteristics
(5)
VCC = +2.5V ±5%, TA = –40°C to +85°C, unless otherwise stated.
Symbol
Parameter
Condition
Min
Typ
Max
Units
VIH
Input HIGH Voltage
2
V
VIL
Input LOW Voltage
0.8
V
IIH
Input HIGH Current
–125
30
µA
IIL
Input LOW Current
-300
µA
Notes:
1. Permanent device damage may occur if absolute maximum ratings are exceeded. This is a stress rating only and functional operation is not
implied at conditions other than those detailed in the operational sections of this data sheet. Exposure to absolute maximum ratings conditions for
extended periods may affect device reliability.
2. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings.
3. Due to the limited drive capability use for input of the same package only.
4. ψJB and θJA values are determined for a 4-layer board in still-air number, unless otherwise stated.
5. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established.
6. VIN(max) is specified when VT is floating.


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