SpSepceifcicifaictaiotinosnsGGALA2L2V21V01B0
AC Switching Characteristics
AC SWITCHING CHARACTERISTICS
Over Recommended Operating Conditions
COM
-7
COM
-10
COM / IND
-15
IND
-20
COM / IND
-25
TEST
COND.1
DESCRIPTION
PARAM.
UNITS
MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX.
MIN. MAX.
tpd
tco
tcf2
tsu1
tsu2
th
A
A
Input or I/O to Comb. Output
Clock to Output Delay
3
2
7.5
5
3
2
10
7
3
15
8
3
20
10
8
3
25
15
13
—
—
ns
ns
ns
ns
ns
2
2
2
—
—
—
Clock to Feedback Delay
—
2.5
—
—
—
7
2.5
—
—
—
10
10
2.5
—
—
—
14
14
—
15
15
Setup Time, Input or Fdbk before Clk↑ 6.5
—
—
Setup Time, SP before Clock↑
10
10
—
Hold Time, Input or Fdbk after Clk↑
0
—
—
0
—
—
0
—
—
0
—
—
0
—
—
ns
A
Maximum Clock Frequency with
External Feedback, 1/(tsu + tco)
87
71.4
55.5
41.6
33.3
MHz
fmax3
A
A
Maximum Clock Frequency with
Internal Feedback, 1/(tsu + tcf)
111
111
—
—
105
105
—
—
80
—
—
45.4
50
—
—
35.7
38.5
—
—
MHz
MHz
Maximum Clock Frequency with
No Feedback
83.3
twh
twl
—
—
B
Clock Pulse Duration, High
4
4
3
3
3
8
8
—
—
8
4
4
—
—
10
9
6
6
—
—
15
15
20
—
—
—
10
10
3
—
—
20
20
25
—
—
—
13
13
3
—
—
25
25
25
—
—
—
ns
ns
ns
ns
ns
ns
ns
ns
Clock Pulse Duration, Low
ten
tdis
tar
Input or I/O to Output Enabled
Input or I/O to Output Disabled
Input or I/O to Asynch. Reset of Reg.
Asynch. Reset Pulse Duration
Asynch. Reset to Clk↑ Recovery Time
3
3
C
8
3
3
3
3
A
13
—
—
—
3
13
—
—
—
3
3
3
tarw
tarr
tspr
—
—
—
8
15
10
10
20
20
14
25
25
15
8
Synch. Preset to Clk↑ Recovery Time 10
10
1) Refer to Switching Test Conditions section.
2) Calculated from fmax with internal feedback. Refer to fmax Description section.
3) Refer to fmax Description section.
Capacitance (TA = 25°C, f = 1.0 MHz)
SYMBOL
PARAMETER
Input Capacitance
I/O Capacitance
MAXIMUM*
UNITS
TEST CONDITIONS
VCC = 5.0V, VI = 2.0V
VCC = 5.0V, VI/O = 2.0V
CI
8
8
pF
pF
CI/O
*Characterized but not 100% tested.
12
LATTICE [ LATTICE SEMICONDUCTOR ]
