VITESSE
SEMICONDUCTOR CORPORATION
Data Sheet
10-Bit Transceiver for Fibre
Channel and Gigabit Ethernet
VSC7123
DC Characteristics (over recommended operating conditions)
Parameters
Description
Min
Typ
Max
Units
Conditions
IOH = –1.0 mA
VOH
VOL
VIH
VIL
IIH
Output HIGH voltage (TTL)
Output LOW voltage (TTL)
Input HIGH voltage (TTL)
Input LOW voltage (TTL)
Input HIGH current (TTL)
Input LOW current (TTL)
2.4
—
2.0
0
—
—
—
—
50
—
—
0.5
V
V
IOL = +1.0 mA
5V Tolerant Inputs
—
5.5
V
0.8
V
—
—
500
-500
µA
µA
VIN = 2.4V
VIN = 0.5V
IIL
TX output differential peak-
to-peak voltage swing
75Ω to VDD – 2.0V
(TX+) - (TX-)
(1)
1200
1000
—
—
2200
2200
mVp-p
mVp-p
∆VOUT75
TX output differential peak-
to-peak voltage swing
50Ω to VDD – 2.0V
(TX+) - (TX-)
(1)
∆VOUT50
RX Input differential peak-
to-peak input sensitivity
Internally biased to VDD/2
(RX+) - (RX-)
(1)
300
3.14
—
—
—
2600
3.47
900
mVp-p
V
∆VIN
V
Supply voltage
3.3V±5%
DD
Outputs open,
650
mW
PD
Power dissipation
V
= V max
DD
DD
Outputs open, Case temp =
IDD
Supply current (all supplies)
Analog supply current
—
—
190
260
100
mA
mA
o
95 C, V = V max
DD
DD
IDDA
—
V
= V
max
DDA
DDA
NOTE: (1) Refer to Application Note, AN-37, for differential measurement techniques.
G52212-0, Rev 4.3
03/25//01
Page 11
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