SY88905(2000) 查看數據表（PDF） - Micrel
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SY88905 Datasheet PDF : 9 Pages
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Micrel
PIN DEFINITIONS
Pin
VCC
GND
LOSIN
VREF
IPIN SET
LOSOUT
IBIASFB
IBIASSET
MD
IBIAS
Type
Power
Power
TTL Input
Analog Output
Analog Input
PECL Output
Analog Output
Analog Input
Analog Input
Analog Input
SY88905
Description
Positive Power supply
Ground
Loss-of-Signal Input from SY88903
Reference Voltage
Adjustable, Resistor to VREF sets Monitor Diode Photo Current Reference
Loss-of-Signal PECL output
Monitor Diode Feedback
Adjustable, Resistor to VREF sets the DC bias current for the Laser Diode
Monitor Diode Connection
DC bias current for the Laser Diode
ALBOSGOICLUDTIAEGMRAAXMIMUM RATINGS(1)
Symbol
Rating
Value
Unit
VCC
LOSIN
Power Supply Voltage
Input Voltage
0 to +7.0
V
0 to VCC
V
LOSOUT, IPIN SET
IBIASFB, IBIAS SET
Others; I/O Voltage
–0.3, VCC +0.3
V
TA
Operating Temperature Range
0 to +85
˚C
Tstore
Storage Temperature Range
–55 to +125
˚C
IPIN SET, IBIAS SET, IMD
Max. Sink Current
1
mA
IBIASFB
IBIAS
Max. Source Current
Max. Sink Current
1
mA
30
mA
IVREF
Max. Source Current
2
mA
NOTE:
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 RATlNG conditions for extended
periods may affect device reliability.
100H ECL DC ELECTRICAL(1)
VCC = +5V ±10%
TA = 0°C
TA = +25°C
TA = +85°C
Symbol
Parameter
Min.
Max.
Min.
Max.
Min.
Max. Unit Condition
VOH
Output HIGH Voltage VCC – 1025 VCC – 880 VCC – 1025 VCC – 880 VCC – 1025 VCC – 880 mV 50Ω to VCC–2V
VOL
Output LOW Voltage VCC –1810 VCC –1620 VCC –1810 VCC –1620 VCC –1810 VCC–1620 mV 50Ω to VCC–2V
NOTE:
1. 100H circuits are designed to meet the DC specifications shown in the table where transverse airflow greater than 500lfpm is maintained.
2
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