A3PE3000-1FGG896I Datasheet, PDF (50/152 Pages) Actel Corporation – ProASIC3E Flash Family FPGAs

ProASIC3E DC and Switching Characteristics
3.3 V GTL+
Gunning Transceiver Logic Plus is a high-speed bus standard (JESD8-3). It provides a differential
amplifier input buffer and an open-drain output buffer. The V_CCI pin should be connected to
3.3 V.
Table 2-50 • Minimum and Maximum DC Input and Output Levels
3.3 V GTL+
V_IL
Drive
Strength Min., V Max., V
V_IH
V_OL
V_OH I_OL I_OH
I_OSL
I_OSH
I_IL I_IH
Min., V Max., V Max., V Min., V mA mA Max., mA¹ Max., mA¹ µA² µA²
35 mA
–0.3 V_REF – 0.1 V_REF + 0.1 3.6
0.6
– 35 35 181
268
Notes:
1. Currents are measured at high temperature (100°C junction temperature) and maximum voltage.
2. Currents are measured at 85°C junction temperature.
10 10
V_TT
GTL+ ₂₅
Test Point
10 pF
Figure 2-13 • AC Loading
Table 2-51 • AC Waveforms, Measuring Points, and Capacitive Loads
Input LOW (V)
Input HIGH (V)
Measuring
Point* (V)
V_REF (typ.) (V)
V_TT (typ.) (V)
V_REF – 0.1
V_REF + 0.1
1.0
1.0
1.5
* Measuring point = V_trip. See Table 2-15 on page 2-18 for a complete table of trip points.
C_LOAD (pF)
10
Timing Characteristics
Table 2-52 • 3.3 V GTL+
Commercial-Case Conditions: T_J = 70°C, Worst-Case V_CC = 1.425 V,
Worst-Case V_CCI = 3.0 V, V_REF = 1.0 V
Speed
Grade
t_DOUT
t_DP
t_DIN
t_PY
t_EOUT
t_ZL
t_ZH t_LZ t_HZ
–F
0.72 2.47 0.05 1.91 0.51 2.51 2.47
t_ZLS
5.20
t_ZHS
5.15
Units
ns
Std.
0.60 2.06 0.04 1.59 0.43 2.09 2.06
4.33 4.29
ns
–1
0.51 1.75 0.04 1.35 0.36 1.78 1.75
3.68 3.65
ns
–2
0.45 1.53 0.03 1.19 0.32 1.56 1.53
3.23 3.20
ns
Note: For specific junction temperature and voltage supply levels, refer to Table 2-6 on page 2-5 for derating
values.
2-38
v1.2