LFEC3E-3QN208I Lattice, LFEC3E-3QN208I Datasheet - Page 55

• Manufacturer Part Number: LFEC3E-3QN208I
• Description: IC FPGA 3KLUTS 208PQFP
• Manufacturer: Lattice
• Series: EC3r

Specifications of LFEC3E-3QN208I

• Number Of Logic Elements/cells: 3100
• Number Of Labs/clbs: -
• Total Ram Bits: 56320
• Number Of I /o: 145
• Number Of Gates: -
• Voltage - Supply: 1.14 V ~ 1.26 V
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 100°C
• Package / Case: 208-BFQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: Q6377645

Lattice Semiconductor
BLVDS
The LatticeECP/EC devices support BLVDS standard. This standard is emulated using complementary LVCMOS
outputs in conjunction with a parallel external resistor across the driver outputs. BLVDS is intended for use when
multi-drop and bi-directional multi-point differential signaling is required. The scheme shown in Figure 3-2 is one
possible solution for bi-directional multi-point differential signals.
Figure 3-2. BLVDS Multi-point Output Example
Table 3-2. BLVDS DC Conditions
100
100
2.5V
2.5V
+
+
-
-
Z
R
R
V
V
V
V
I
1. For input buffer, see LVDS table.
DC
OUT
OH
OL
OD
Parameter
TLEFT
TRIGHT
CM
45-90 ohms, +/- 1%
2.5V
100
Over Recommended Operating Conditions
Heavily loaded backplane, effective Zo ~ 45 to 90 ohms differential
Output impedance
Left end termination
Right end termination
Output high voltage
Output low voltage
Output differential voltage
Output common mode voltage
DC output current
1
2.5V
%
100
Description
3-9
. . .
. . .
2.5V
Zo = 45
1.375
1.125
0.25
1.25
11.2
100
100
45
45
Typical
DC and Switching Characteristics
LatticeECP/EC Family Data Sheet
45-90 ohms, +/- 1%
2.5V
Zo = 90
-
1.48
1.02
0.46
1.25
10.2
100
100
90
90
Units
ohm
ohm
ohm
mA
V
V
V
V
2.5V
2.5V
+
-
100
100