vsc7928 Vitesse Semiconductor Corp, vsc7928 Datasheet - Page 2

• Manufacturer Part Number: vsc7928
• Description: Sonet/sdh 3.2gb/s Laser Diode Driver
• Manufacturer: Vitesse Semiconductor Corp

Page 2
SONET/SDH 3.2Gb/s Laser Diode Driver
Table 1: Signal Pin Reference
Table 2: Mux Select Logic Table
Table 3: Absolute Maximum Ratings
Table 4: Recommended Operating Conditions
NOTES: (1) Lower limit of specification is ambient temperature and upper limit is case temperature. (2) See section “Calculation of the
Maximum Case Temperature” for detailed maximum temperature calculations.
Symbol
GND
VSS
T
T
DIN, NDIN
MK, NMK
NIOUT
IOUT
VSS
GND
VIP
MIP
VIB
MIB
IBIAS
CLK, NCLK
DINTERM
CLKTERM
DCC
SEL
GND/NC
Total Pins
NOTE: (1) Applicable to 32-pin TQFP package only.
Symbol
V
T
T
Cl
J
J
STG
SS
SEL
GND
N/C
V
Signal
SS
Positive Voltage Rail
Negative Voltage Rail
Operational Temperature
Junction Temperature
Negative Power Supply Voltage
Maximum Junction Temperature
Storage Temperature
Type
Parameter
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Pwr
Pwr
Pwr
Out
Out
Out
Out
Non-clocked Data In
Non-clocked Data In
—
In
In
In
In
In
In
In
In
In
In
Clocked Data In
Mode Select
Tel: (800) VITESSE • FAX: [phone] • Email: [e-mail]
Level
(1)
ECL
ECL
ECL
Pwr
Pwr
VITESSE
DC
DC
DC
DC
DC
DC
DC
DC
DC
DC
—
—
—
SEMICONDUCTOR CORPORATION
Rating
# Pins
24/32
5/6
7
2
2
1
1
2
1
1
1
1
1
2
1
1
1
1
(1)
(1)
*
Internet: www.vitesse.com
Min
-5.5
-40
—
—
Data Input and Data Reference, On-chip 50 Termination
Data Density Differential Outputs
Laser Modulation Current Output (Complementary)
Laser Modulation Current Output (To Laser Cathode)
Negative Voltage Rail
Positive Voltage Rail
Modulation Gate Node
Modulation Source Node
Bias Gate Node
Bias Source Node
Laser Bias Output (To Laser Cathode)
Clock Input and Clock Reference, On-chip 50 Termination
Data Reference
Clock Reference
Duty Cycle Control, Leave Floating
Clk/Non-clk Data Select
No connection (leave floating or connect to GND)
Typ
-5.2
—
—
0
Max
85
-4.9
125
—
(2)
Units
°C
°C
Description
V
V
Preliminary Data Sheet
-55°C to + 125°C
-65°C to +150°C
Power dissipation = 1.3W
V
CC
Limit
to -6.0V
Conditions
VSC7928
G52246-0, Rev 3.0
04/05/01