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