LFEC3E-4F256C Lattice, LFEC3E-4F256C Datasheet - Page 46
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LFEC3E-4F256C
Manufacturer Part Number
LFEC3E-4F256C
Description
IC FPGA 3.1KLUTS 160I/O 256-BGA
Manufacturer
Lattice
Datasheet
1.LFEC3E-5TN144C.pdf
(163 pages)
Specifications of LFEC3E-4F256C
Lead Free Status / Rohs Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LFEC3E-4F256C
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
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Lattice Semiconductor
LVPECL
The LatticeECP/EC devices support differential LVPECL standard. This standard is emulated using complemen-
tary LVCMOS outputs in conjunction with a parallel resistor across the driver outputs. The LVPECL input standard
is supported by the LVDS differential input buffer. The scheme shown in Figure 3-3 is one possible solution for
point-to-point signals.
Figure 3-3. Differential LVPECL
Table 3-3. LVPECL DC Conditions
For further information about LVPECL, BLVDS and other differential interfaces please see the list of technical infor-
mation at the end of this data sheet.
Z
R
R
V
V
V
V
Z
I
1. For input buffer, see LVDS table.
DC
Parameter
OUT
OH
OL
OD
BACK
P
T
CM
3.3V
3.3V
Output impedance
Driver parallel resistor
Receiver termination
Output high voltage
Output low voltage
Output differential voltage
Output common mode voltage
Back impedance
DC output current
Over Recommended Operating Conditions
1
Off-chip
100 ohms
100 ohms
Description
~150 ohms
Transmission line, Zo = 100 ohm differential
3-10
DC and Switching Characteristics
Typical
LatticeECP/EC Family Data Sheet
2.03
1.27
0.76
1.65
85.7
12.7
100
150
100
100 ohms
Units
ohm
ohm
ohm
ohm
mA
V
V
V
V
+
-
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