VITESSE
SEMICONDUCTOR CORPORATION
Datasheet
2.488 Gb/s ATM/SDH/SONET STM-16/STS-48
Mux/Demux and Section Terminator IC Chipset
VSC8025/VSC8026
VSC8026 Power Dissipation
Table 15: VSC8026 Power Supply Currents (Outputs Open)
Parameter
Description
(Max)
Units
ITT
ITTL
IDD
PD
Power supply current from VTT
Power supply current from VTTL
Power supply current from VDD
Power dissipation
2.37
75
A
mA
mA
W
266
6.7
VSC8026 Package Pin Description
Table 16: Pin Identification Table
Signal
Pin
I/O
Level
Pin Description
Test enable (tie to -2V)
VSCTE
N/C
A01
A02
A03
A04
A05
A06
A07
A08
A09
A10
A11
A12
A13
A14
A15
A16
B01
B02
B03
B04
B05
B06
B07
B08
B09
I
-2V
No connection (leave open)
-2.0V power supply
VTT
PWR
I
-2V
RXPCLKIN+
N/C
ECL
Receive parallel clock in
No connection (leave open) No connection (leave open)
Serial loop back clock out
Serial loop back clock out
Receive parallel frame pulse in
Receive parallel data in
Receive parallel data in
Receive parallel data in
Receive parallel data in
Receive parallel data in
Ground
RXSLBCLK+
RXSLBCLK-
RXFPIN
RXPIN1
RXPIN2
RXPIN3
RXPIN5
RXPIN7
VCC
O
HSECL
HSECL
ECL
O
I
I
ECL
I
ECL
I
ECL
I
I
ECL
ECL
PWR
GND
N/C
No connection (leave open)
No connection (leave open)
No connection (leave open)
Loss of signal (active high)
No connection (leave open)
No connection (leave open)
Receive parallel clock in
No connection (leave open)
Ground
N/C
N/C
LOS
I
TTL
N/C
N/C
RXPCLKIN-
N/C
I
PWR
I
ECL
GND
ECL
VCC
N/C
No connection (leave open)
Receive parallel data in
RXPIN0
G52182-0, Rev. 4.0
1/5/00
VITESSE SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896
Page 27
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
