Data Sheet
July 1999
Optical Amplifier Platform, 1724-Type
Erbium-Doped Fiber Amplifier (S and V Series)
Electrical Characteristics (continued)
Table 3. TTL Inputs/Outputs
Under normal operating conditions, the various alarm outputs will be TTL level low. If the corresponding parameter
is outside a predesignated range, the associated alarms will become TTL level high.
Parameter
Input Voltage:
High
Low
Output Voltage:
High
Low
Input Current:
High
Low
Output Current:
High
Low
Symbol
Min
Typ
Max
Unit
VIH
2
—
—
V
VIL
—
—
0.8
V
VOH
2.4
—
—
V
VOL
0
0.1
0.4
V
IIH
—
—
–1
µA
IIL
—
—
1
µA
IOH
—
—
–4
mA
IOL
—
—
20
µA
Agere Systems Inc.
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