Table 2-1: DC Electrical Characteristics
VCC = 3.3V 5ꢀ% TA = 0°C to 70°C, unless otherwise shown
Parameter
Symbol
VCMIN
VIH
Conditions
Common mode
IIH <= 10 μA
IIL <= 10 μA
Min
Typ
Max
Units
Input Voltage
1.4 + ΔVDDI/2
–
–
–
VCC - ΔVDDI/2
V
V
V
SD/HD, DISABLE Input
2.0
–
–
VIL
0.8
2.3 AC Electrical Characteristics
Table 2-2: AC Electrical Characteristics
VCC = 3.3V 5ꢀ% TA = 0°C to 70°C, unless otherwise shown
Parameter
Symbol
Conditions
–
Min
Typ
–
Max
2.97
–
Units
Gb/s
psp-p
psp-p
psp-p
ps
Notes
Serial input data rate
Additive jitter
DRSDO
–
–
1
–
–
–
2
2
–
–
2.97Gb/s
1.485Gb/s
270Mb/s
SD/HD=0
SD/HD=1
–
22
20
16
–
–
–
–
–
–
–
Rise/Fall time
tr, tf
tr, tf
Utr, Utf
–
135
800
35
400
–
–
ps
Mismatch in rise/fall time
Duty cycle distortion
–
ps
–
SD/HD=0, 2.97 Gb/s
SD/HD=0, 1.485 Gb/s
SD/HD=1
–
–
–
–
27
30
100
10
8
ps
ps
3
3
3
3
3
4
4
3
–
–
–
–
ps
Overshoot
–
SD/HD=0,
–
–
ꢀ
–
SD/HD=1
–
–
ꢀ
Output Return Loss
ORL
5 MHz – 1.485 GHz
1.485 GHz – 2.97 GHz
RSET = 750Ω
15
10
750
20
12
800
–
dB
–
dB
Output Voltage Swing
Input Voltage Swing
NOTES:
VOUT
850
mVp-p
UVDDI
Differential
100
–
2200
mVp-p
–
1. The input coupling capacitor must be set accordingly for lower data rates.
2. Rise/Fall time measured between 20% and 80%.
3. Single Ended into 75Ω external load.
4. ORL depends on board design. The GS2978 achieves this specification on Gennum's evaluation boards.
GS2978
6 of 15
HD-LINX® III Multi-Rate Dual Slew-Rate Cable Driver
Data Sheet
37186 - 7
March 2009
GENNUM [ GENNUM CORPORATION ]
