ORT8850H AGERE [Agere Systems], ORT8850H Datasheet - Page 60

• Manufacturer Part Number: ORT8850H
• Description: Field-Programmable System Chip (FPSC) Eight-Channel x 850 Mbits/s Backplane Transceiver
• Manufacturer: AGERE [Agere Systems]

ORCA ORT8850 FPSC
Eight-Channel x 850 Mbits/s Backplane Transceiver
Embedded Core LVDS I/O
LVDS Receiver Buffer Requirements
Table 25. Receiver ac Data*
* V
Table 26. Receiver Power Consumption*
* V
Table 27. Receiver dc Data*
* V
Table 28. LVDS Operating Parameters
Note:Under worst-case operating condition, the LVDS driver will withstand a disabled or unpowered receiver for an unlimited period of time with-
60
Pulse-width Distortion
Propagation Delay Time
With Common-mode Variation (0 V to 2.4 V)
Output Rise Time, 20% to 80%
Output Fall Time, 80% to 20%
Receiver dc Power
Receiver ac Power
Input Voltage Range, VIA or VIB
Input Differential Threshold
Input Differential Hysteresis
Receiver Differential Input Impedance
Transmit Termination Resistor
Receiver Termination Resistor
Temperature Range
Power Supply V
Power Supply V
Power Supply V
DD
DD
DD
= 3.1 V—3.5 V, 0 °C —125 °C , slow-fast process.
= 3.1 V—3.5 V, 0 °C —125 °C , slow-fast process.
= 3.1 V—3.5 V, 0 °C —125 °C , slow-fast process.
out being damaged. Similarly, when outputs are short-circuited to each other or to ground, the LVDS will not suffer permanent damage.
The LVDS driver supports hot insertion. Under a well-controlled environment, the LVDS I/O can drive backplane as well as cable.
Parameter
Parameter
DD
DD
SS
Parameter
Parameter
33
15
(continued)
Symbol
V
V
HYST
R
IDTH
V
Test Conditions
IN
I
Symbol
Symbol
t
t
t
P
P
PLH
PHL
pwd
t
t
t
Rdc
Rac
R
F
PD
—
—
—
—
—
—
With build-in termination,
(+V
Test Conditions
V
V
IDTHH
center-tapped
GPD
GPD
V
dc – 1 MHz
450 MHz
IDTH
) – (–V
Test Conditions
< 925 mV
< 925 mV
Test Conditions
= 100 mV, 450 MHz
C
C
C
C
C
Min
–40
3.1
1.4
80
80
—
L
L
L
L
L
= 0.5 pF
= 0.5 pF
= 0.5 pF
= 0.5 pF
IDTHL
= 0.5 pF
dc
ac
)
Normal
100
100
—
—
—
0
–100
Min
0.0
80
—
Typ
100
0.60
0.60
1.2
Min
150
150
—
—
Min
—
—
Max
Agere Systems Inc.
120
120
125
—
—
3.5
1.6
—
August 2001
Data Sheet
Max
100
120
2.4
Max
1.41
1.47
—
160
350
350
Max
20.4
50
4.5
Unit
°C
Unit
V
V
V
mV
mV
Unit
MHz
Unit
V
mW
ps
ns
ns
ps
ps
ps
W/