3-21
DC and Switching Characteristics
LatticeECP/EC Family Data Sheet
LatticeECP/EC Family Timing Adders1, 2, 3
Over Recommended Operating Conditions
Buffer Type
Description
-5
-4
-3
Units
Input Adjusters
LVDS25
LVDS
0.41
0.50
0.58
ns
BLVDS25
BLVDS
0.41
0.50
0.58
ns
LVPECL33
LVPECL
0.50
0.60
0.70
ns
HSTL18_I
HSTL_18 class I
0.41
0.49
0.57
ns
HSTL18_II
HSTL_18 class II
0.41
0.49
0.57
ns
HSTL18_III
HSTL_18 class III
0.41
0.49
0.57
ns
HSTL18D_I
Differential HSTL 18 class I
0.37
0.44
0.52
ns
HSTL18D_II
Differential HSTL 18 class II
0.37
0.44
0.52
ns
HSTL18D_III
Differential HSTL 18 class III
0.37
0.44
0.52
ns
HSTL15_I
HSTL_15 class I
0.40
0.48
0.56
ns
HSTL15_III
HSTL_15 class III
0.40
0.48
0.56
ns
HSTL15D_I
Differential HSTL 15 class I
0.37
0.44
0.51
ns
HSTL15D_III
Differential HSTL 15 class III
0.37
0.44
0.51
ns
SSTL33_I
SSTL_3 class I
0.46
0.55
0.64
ns
SSTL33_II
SSTL_3 class II
0.46
0.55
0.64
ns
SSTL33D_I
Differential SSTL_3 class I
0.39
0.47
0.55
ns
SSTL33D_II
Differential SSTL_3 class II
0.39
0.47
0.55
ns
SSTL25_I
SSTL_2 class I
0.43
0.51
0.60
ns
SSTL25_II
SSTL_2 class II
0.43
0.51
0.60
ns
SSTL25D_I
Differential SSTL_2 class I
0.38
0.45
0.53
ns
SSTL25D_II
Differential SSTL_2 class II
0.38
0.45
0.53
ns
SSTL18_I
SSTL_18 class I
0.40
0.48
0.56
ns
SSTL18D_I
Differential SSTL_18 class I
0.37
0.44
0.51
ns
LVTTL33
LVTTL
0.07
0.09
0.10
ns
LVCMOS33
LVCMOS 3.3
0.07
0.09
0.10
ns
LVCMOS25
LVCMOS 2.5
0.00
ns
LVCMOS18
LVCMOS 1.8
0.07
0.09
0.10
ns
LVCMOS15
LVCMOS 1.5
0.24
0.29
0.33
ns
LVCMOS12
LVCMOS 1.2
1.27
1.52
1.77
ns
PCI33
PCI
0.07
0.09
0.10
ns
Output Adjusters
LVDS25E
LVDS 2.5 E
0.12
0.14
0.17
ns
LVDS25
LVDS 2.5
-0.44
-0.53
-0.62
ns
BLVDS25
BLVDS 2.5
0.33
0.40
0.46
ns
LVPECL33
LVPECL 3.3
0.20
0.24
0.28
ns
HSTL18_I
HSTL_18 class I
-0.10
-0.12
-0.14
ns
HSTL18_II
HSTL_18 class II
0.06
0.07
0.08
ns
HSTL18_III
HSTL_18 class III
0.15
0.19
0.22
ns
HSTL18D_I
Differential HSTL 18 class I
-0.10
-0.12
-0.14
ns
HSTL18D_II
Differential HSTL 18 class II
0.06
0.07
0.08
ns
HSTL18D_III
Differential HSTL 18 class III
0.15
0.19
0.22
ns
HSTL15_I
HSTL_15 class I
0.08
0.10
0.11
ns