VITESSE
SEMICONDUCTOR CORPORATION
Data Sheet
VSC8122
DC Characteristics
(Over recommended operating conditions)
Table 6: TTL Inputs and Outputs
Parameters
V
OH
V
OL
V
IH
V
IL
I
IH
I
IL
Multi-Rate SONET/SDH
Clock and Data Recovery IC
Description
Output HIGH voltage
Output LOW voltage
Input HIGH voltage
Input LOW voltage
Input HIGH current
Input LOW current
Min
2.4
—
2.0
0
—
—
Typ
—
—
—
—
50
—
Max
—
0.5
3.47
0.8
500
500
Units
V
V
V
V
µA
µA
Conditions
I
OH
= -1.0mA
I
OL
= 1.0mA
V
IN
= 2.4V
V
IN
= 0.5V
Table 7: Power Supply
Parameters
V
CC
P
D
I
CC
Description
Supply voltage
Power dissipation
Supply current
Min
3.14
—
—
Typ
3.3
1.0
300
Max
3.47
1.2
347
Units
V
W
mA
Conditions
3.3V± 5%
Outputs terminated
Outputs terminated
Absolute Maximum Ratings
(1)
Power Supply Voltage (V
CC
) .......................................................................................................... -0.5V to +3.8V
DC Input Voltage (differential inputs) ....................................................................................-0.5V to V
CC
+0.5V
DC Input Voltage (TTL inputs)....................................................................................................... -0.5V to +5.5V
DC Output Voltage (TTL outputs) ......................................................................................... -0.5V to V
CC
+ 0.5V
Output Current (TTL outputs).................................................................................................................. +/-50mA
Output Current (differential outputs) ........................................................................................................+/-50mA
Case Temperature Under Bias...................................................................................................... -55
o
C to +125
o
C
NOTE: (1) CAUTION: Stresses listed under “Absolute Maximum Ratings” may be applied to devices one at a time without caus-
ing permanent damage. Functionality at or above the values listed is not implied. Exposure to these values for extended
periods may affect device reliability.
Recommended Operating Conditions
Power Supply Voltage, (V
CC
) ............................................................................................................. +3.3V+5%
Operating Temperature Range ........................................................ 0
o
C Ambient to +85
o
C Case Temperature
ESD Ratings
Proper ESD procedures should be used when handling this product. The VSC8122 is rated to the following ESD
voltages based on the human body model:
1. All pins are rated at or above 1500V.
G52228-0, Rev 4.1
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
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