sy88782l Micrel Semiconductor, sy88782l Datasheet - Page 3

• Manufacturer Part Number: sy88782l
• Description: 3.3v, 1.25gbps High Current, Low Power Laser Driver For Datacom Telecom Applications
• Manufacturer: Micrel Semiconductor

Pin Description
Truth Table
February 2005
1, 4, 7, 8, 13
Pin Name
11, 12
Notes:
1. I
2. Assuming that the laser is tied to MOD+.
9, 10
5, 6
14
15
16
2
3
MOD
DIN+
= 0 when MOD+ = H.
H
X
L
Pin Number
IM_SET
MOD–
MOD+
VREF
DIN+
DIN–
GND
VCC
/EN
DIN-
H
X
L
Pin Function
Ground. Ground and exposed pad must be connected to the plane of the most
negative potential.
Non-inverting input data. Internally terminated with 50Ω to a reference voltage.
Inverting input data. Internally terminated with 50Ω to a reference voltage.
Supply Voltage. Bypass with a 0.1µF//0.01µF low ESR capacitor as close to VCC
pin as possible.
Inverted modulation current output. Outputs modulation current when input data is
negative.
Non-inverted modulation current output. Outputs modulation current when input
data is positive.
Reference Voltage. Install a 0.1µF capacitor between VREF and VCC.
Modulation current setting and control. The voltage applied to this pin will set the
modulation current. To be connected to the MIC3000/1 pin 24 (VMOD+). Input
impedance 25KΩ.
A low level signal on this pin will enable the output stage of the driver. Internally
pulled down with 75KΩ.
/EN
H
L
L
3
MOD+
H
H
L
(1)
MOD-
[e-mail]
H
L
L
Laser Output
H
L
L
or [phone]
M9999-021005
(2)