U1AFS250-2FG256YI
| Model | U1AFS250-2FG256YI |
| Description | Field Programmable Gate Array, |
| PDF file | Total 334 pages (File size: 18M) |
| Chip Manufacturer | MICROSEMI |
Device Architecture
Voltage Referenced I/O Characteristics
3.3 V GTL
Gunning Transceiver Logic is a high-speed bus standard (JESD8-3). It provides a differential amplifier
input buffer and an open-drain output buffer. The VCCI pin should be connected to 3.3 V.
Table 2-138 •
Minimum and Maximum DC Input and Output Levels
3.3 V GTL
Drive
Strength
20 mA
3
Notes:
1. IIL is the input leakage current per I/O pin over recommended operation conditions where –0.3 V < VIN < VIL.
2. IIH is the input leakage current per I/O pin over recommended operating conditions VIH < VIN < VCCI. Input current is
larger when operating outside recommended ranges.
3. Currents are measured at high temperature (100°C junction temperature) and maximum voltage.
4. Currents are measured at 85°C junction temperature.
VIL
Min.
V
–0.3
Max.
V
Min.
V
VIH
Max.
V
3.6
VOL
Max.
V
0.4
VOH
Min.
V
–
IOL IOH IOSL
mA mA
20
20
Max.
mA
3
181
IOSH
Max.
mA
3
268
IIL
1
IIH
2
µA
4
µA
4
10
10
VREF – 0.05 VREF + 0.05
VTT
GTL
Test Point
10 pF
25
Figure 2-124 •
AC Loading
Table 2-139 •
AC Waveforms, Measuring Points, and Capacitive Loads
Input Low (V)
VREF – 0.05
Input High (V)
VREF + 0.05
Measuring Point* (V)
0.8
VREF (typ.) (V)
0.8
VTT (typ.) (V)
1.2
C
LOAD
(pF)
10
Note:
*Measuring point = Vtrip. See
for a complete table of trip points.
Timing Characteristics
Table 2-140 •
3.3 V GTL
Commercial Temperature Range Conditions: T
J
= 70°C, Worst-Case VCC = 1.425 V,
Worst-Case VCCI = 3.0 V, VREF = 0.8 V
Speed
Grade
Std.
–1
–2
t
DOUT
0.66
0.56
0.49
t
DP
2.08
1.77
1.55
t
DIN
0.04
0.04
0.03
t
PY
2.93
2.50
2.19
t
EOUT
0.43
0.36
0.32
t
ZL
2.04
1.73
1.52
t
ZH
2.08
1.77
1.55
t
LZ
t
HZ
t
ZLS
4.27
3.63
3.19
t
ZHS
4.31
3.67
3.22
Units
ns
ns
ns
Note:
For the derating values at specific junction temperature and voltage supply levels, refer to
2- 20 2
R e visio n 3
