sy88232l Micrel Semiconductor, sy88232l Datasheet - Page 5

• Manufacturer Part Number: sy88232l
• Description: 2.5gbps Laser Diode Driver With Integrated Limiting Amplifier
• Manufacturer: Micrel Semiconductor

Truth Tables
Notes:
1. Assuming /TXDIS = H and a 6.3kΩ resistor installed between TXDIS
2. I
3. Assuming that the cathode of the laser is connected to MOD+.
Micrel, Inc.
June 2009
DIN+
and GND or TXDIS = L and a 6.3kΩ resistor installed between
/TXDIS and GND
MOD
H
X
L
= 0 when MOD+ = H.
Table 1. Modulation Output Truth Table
DIN-
Table 2. BIAS Output Truth Table
H
X
L
/TXEN
/TXEN
H
L
L
X
L
L
MOD+
H
H
L
BIAS
OFF
OFF
ON
(2)
MOD-
H
L
L
(1)
(1, 3)
Power
Output
Laser
H
L
L
(3)
5
LOS/SD_SEL
H
H
L
L
Table 3. Post Amp Output Truth Table
Function
Selected
[e-mail]
LOS
LOS
SD
SD
JAM
H
H
L
L
or [phone]
M9999-063009-A
SY88232L/AL
Disabled
Disabled
Enabled
Enabled
Output