VITESSE
SEMICONDUCTOR CORPORATION
Advance Product Information
VSC7124
Figure 2: Timing Waveforms
Quad Port Bypass Circuit
Ix+/-
Ox+/-
T
1
T
1
AC Characteristics
Parameters
T
1
T
R
, T
F
T
j(PBC)
(Over Recommended Operating Conditions)
Description
Propagation Delay
Serial Data Rise and Fall Time
Data Jitter Accummulation
Min
Typ
Max
7.0
300
120
Units
ns
ps
ps
Conditions
Delay with all circuits
bypassed.
At
∆V
IN
minimum levels
Peak-to-Peak on Ox+/-
DC Characteristics
(Over Recommended Operating Conditions)
Parameters
V
OH
V
OL
V
IH
V
IL
I
IH
I
IL
∆V
OUT75(1)
∆V
OUT50(1)
∆V
IN(1)
V
DD
P
D
I
DD
Description
Output HIGH voltage (TTL)
Output LOW voltage (TTL)
Input HIGH voltage (TTL)
Input LOW voltage (TTL)
Input HIGH current (TTL)
Input LOW current (TTL)
TX output differential peak-to-peak
voltage swing
TX output differential peak-to-peak
voltage swing
Receiver differential peak-to-peak
Input Sensitivity RX
Supply voltage
Power dissipation
Power Supply Current
Min
2.4
Typ
Max
0.5
Units
V
V
V
V
µA
µA
mVp-p
mVp-p
mVp-p
V
mW
mA
Conditions
I
OH
= -1.0 mA
I
OL
= +1.0 mA
2.0
0
50
5.5
0.8
500
-500
V
IN
=2.4V
V
IN
=0.5V
75Ω to V
DD
– 2.0 V
50Ω to V
DD
– 2.0 V
Internally biased to V
DD
/2
3.3V±5%
Outputs open,
V
DD
= V
DD
max ±2%
Outputs open,
V
DD
= V
DD
max
1200
1000
400
3.14
250
76
2200
2200
2600
3.47
555
160
NOTE: (1) Refer to Application Note AN-37 for details regarding differential voltage measurements.
G52293-0, Rev 2.3
05/07/01
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VITESSE
SEMICONDUCTOR CORPORATION
• 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com
Internet: www.vitesse.com
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