ProASIC3 DC and Switching Characteristics
v1.3 2-29
Single-Ended I/O Characteristics
3.3 V LVTTL / 3.3 V LVCMOS
Low-Voltage Transistor–Transistor Logic (LVTTL) is a general-purpose standard (EIA/JESD) for 3.3 V
applications. It uses an LVTTL input buffer and push-pull output buffer.
Table 2-37 • Minimum and Maximum DC Input and Output Levels
Applicable to Advanced I/O Banks
3.3 V LVTTL /
3.3 V LVCMOS V
IL
V
IH
V
OL
V
OH
I
OL
I
OH
I
OSL
I
OSH
I
IL
I
IH
Drive Strength Min., V Max., V Min., V Max., V Max., V Min., V mA mA Max., mA
1
Max., mA
1
µA
2
µA
2
2 mA –0.3 0.8 2 3.6 0.4 2.4 2 2 27 25 10 10
4 mA –0.3 0.8 2 3.6 0.4 2.4 4 4 27 25 10 10
6 mA –0.3 0.8 2 3.6 0.4 2.4 6 6 54 51 10 10
8 mA –0.3 0.8 2 3.6 0.4 2.4 8 8 54 51 10 10
12 mA –0.3 0.8 2 3.6 0.4 2.4 12 12 109 103 10 10
16 mA –0.3 0.8 2 3.6 0.4 2.4 16 16 127 132 10 10
24 mA –0.3 0.8 2 3.6 0.4 2.4 24 24 181 268 10 10
Notes:
1. Currents are measured at high temperature (100°C junction temperature) and maximum voltage.
2. Currents are measured at 85°C junction temperature.
3. Software default selection highlighted in gray.
Table 2-38 • Minimum and Maximum DC Input and Output Levels
Applicable to Standard Plus I/O Banks
3.3 V LVTTL /
3.3 V LVCMOS V
IL
V
IH
V
OL
V
OH
I
OL
I
OH
I
OSL
I
OSH
I
IL
I
IH
Drive Strength Min., V Max., V Min., V Max., V Max., V Min., V mA mA Max., mA
1
Max., mA
1
µA
2
µA
2
2 mA –0.3 0.8 2 3.6 0.4 2.4 2 2 27 25 10 10
4 mA –0.3 0.8 2 3.6 0.4 2.4 4 4 27 25 10 10
6 mA –0.3 0.8 2 3.6 0.4 2.4 6 6 54 51 10 10
8 mA –0.3 0.8 2 3.6 0.4 2.4 8 8 54 51 10 10
12 mA –0.3 0.8 2 3.6 0.4 2.4 12 12 109 103 10 10
16 mA –0.3 0.8 2 3.6 0.4 2.4 16 16 109 103 10 10
Notes:
1. Currents are measured at high temperature (100°C junction temperature) and maximum voltage.
2. Currents are measured at 85°C junction temperature.
3. Software default selection highlighted in gray.