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參數(shù)資料
| 型號： | VSC880TY |
| 英文描述： | Interface IC |
| 中文描述： | 接口IC |
| 文件頁數(shù)： | 22/28頁 |
| 文件大小： | 289K |
| 代理商： | VSC880TY |
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VITESSE
Data Sheet
VSC880
High Performance 16x16
Serial Crosspoint Switch
Page 22
G52191-0, Rev 4.2
01/05/01
VITESSE
SEMICONDUCTOR CORPORATION
741 Calle Plano
Camarillo, CA 93012
Tel: (800) VITESSE
FAX: (805) 987-5896
Email: prodinfo@vitesse.com
Internet: www.vitesse.com
DC Characteristics
Table 5: LVDS and TTL Inputs and Outputs
Hot Swap
The LVDS input and output buffers are subject to hot swap events while being connected and disconnected from
the passive backplane. If the input is powered down but still receiving a signal from an output, the input must tolerate
extra input current and power. If the input is powered up but has no input connection, it must go to a valid logic state.
The Table 6 below lists the LVDS I/O parameters that relate to hot swap condition.
Table 6: Hot Swap LVDS I/O Parameters
Power Dissipation
Table 7: Power Supply Currents
Parameters
Description
Min
Typ
Max
Units
Conditions
V
OH
V
OL
V
OCM
V
OUT
V
ICM
V
IN
V
IH
V
IL
I
IH
I
IL
Output HIGH voltage (TTL)
Output LOW voltage (TTL)
O/P Common Mode Range (LVDS)
Differential Output Voltage (LVDS)
I/P Common Mode Range (LVDS)
Differential Input Voltage (LVDS)
Input HIGH voltage (TTL)
Input LOW voltage (TTL)
Input HIGH current (TTL)
Input LOW current (TTL)
Bi-directional (TTL) HIGH current
3-State Output OFF
2.4
—
1.2
400
0.8
200
2.0
0
—
- 50
—
—
—
—
—
—
—
—
—
—
—
0.4
2.1
1000
2.5
1600
V
DD
+1.0
0.8
500
—
V
V
V
I
OH
= -6.0 mA
I
OL
= +6.0 mA
At Min
V
OUT
100
across input
At Min
V
IN
—
—
—
V
IN
=2.4V
V
IN
= 0.4V
mV
V
mV
V
V
μ
A
μ
A
I
OZB
500
μ
A
V
OUT
=2.4V
Parameters
Description
Value
Units
Conditions
I
CO
I
CI
P
CI
V
CDL
LVDS maximum current delivered per output pin
LVDS maximum current allowed per input pin
LVDS maximum added power per output pin
LVDS input default logic state
10
40
60
mA
mA
mW
—
Normal Operation
V
DD
= 0V
V
DD
= 0V on VSC870
Input Open
LOW
Parameter
Description
(Max)
Units
I
DD
I
DDA
I
DDX
I
MM
P
DS
P
DD
Power supply current from V
DD
, V
DDA
(V
DD
, V
DDA
= 3.3V
+ 5%)
Power supply current from V
DDA
(V
DDA
= 3.3V + 5%)
Power supply current from each serial data quadrant V
DDX
(V
DDX
= 3.3V + 5%)
Power supply current from V
MM
(V
MM
= 2.5V + 5%)
Power dissipation (V
DD
= 3.3V+5%, V
MM
= 2.5V+5%, all quadrants powered)
Power dissipation (V
DD
= 3.3V+5%, V
MM
= 2.0V+5%, all quadrants powered)
1000
200
750
6800
30.7
28.1
mA
mA
mA
mA
W
W
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