sy88232l Micrel Semiconductor, sy88232l Datasheet - Page 3

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

Pin Configuration
Pin Description
Micrel, Inc.
June 2009
Pin Number
10
11
1
2
3
4
6
7
9
LOS/SD_SEL
Pin Name
LOSLVL
LOS/SD
/TXDIS
TXDIS
/TXEN
DIN+
JAM
DIN-
LOS or SD selection, TTL input. Set high, connect to VCC, or leave open to select LOS. Set low
or connect to GND to select SD.
Loss-of-Signal Level Set. A resistor from this pin to V
amplitude at which LOS will be asserted.
Loss-of-Signal (LOS selected): asserts high when the data input amplitude falls below the
threshold set by LOS
Signal Detect (SD selected): asserts low when the data input amplitude falls below the threshold
set by LOS
Active low TTL/CMOS. Internally pulled-up with 75kΩ. Connect to GND or apply a low level
signal (<0.8 V) to enable the post amp output. Can be shorted to LOS/SD (pin 3) to create a
squelch function. The polarity of this input follows the polarity of LOS/SD.
SY88232L: Driver Non-inverting input data. Internally terminated with 50Ω to a reference
voltage.
SY88232AL: Driver Non-inverting input data. No internal termination.
SY88232L: Driver inverting input data. Internally terminated with 50Ω to a reference voltage.
SY88232AL: Driver inverting input data. No internal termination.
Transmitter Complementary Fast Disable. TTL input. The transmitter is enabled when this pin is
asserted High or left open and disabled when this pin is asserted Low. A 6.3kΩ resistor must be
installed between pin 10 and GND if /TXDIS is used as TTL input.
Transmitter Fast Disable. TTL Input. The transmitter is enabled when this pin is asserted Low
and disabled when this pin is asserted High or left open. A 6.3kΩ resistor must be installed
between pins 9 and GND if TXDIS is used as TTL input.
Active low TTL/CMOS. Internally pulled-up. Pull-down with a 22kΩ or lower resistance or apply
a low level signal (<0.8V) to enable bias and modulation. Keep floating or apply a high level
(>2V) to disable.
Pin Function
LVL
.
32-Pin MLF
LVL
.
®
3
(MLF-32)
CC
sets the threshold for the data input
[e-mail]
or [phone]
M9999-063009-A
SY88232L/AL