CAPACITANCE 1
Parameter
Symbol
Parameter Description
Input Capacitance
Output Capacitance
Test Conditions
Typ
Unit
C
V = 2.0 V
IN
V = 5.0 V
5
IN
CC
T = 25°C
pF
A
C
V
= 2.0 V
8
OUT
OUT
f = 1 MHz
Note:
1. These parameters are not 100% tested, but are evaluated at initial characterization and at any time the design is modified where
capacitance may be affected.
SWITCHING CHARACTERISTICS OVER COMMERCIAL OPERATING RANGES 1
-5
Parameter
Symbol
Parameter Description
Input or Feedback to Combinatorial Output
Min
Max
Unit
ns
t
5
PD
t
Setup Time from Input or Feedback
Setup Time from SP to Clock
Hold Time
3
4
0
ns
S1
t
ns
S2
t
ns
H
t
Clock to Output
4
ns
CO
t
Skew Between Registered Outputs (Note 2)
Asynchronous Reset to Registered Output
Asynchronous Reset Width
0.5
7.5
ns
SKEWR
t
ns
AR
t
4.5
4.5
ns
ARW
t
Asynchronous Reset Recovery Time
Synchronous Preset Recovery Time
ns
ARR
t
4.5
ns
SPR
t
LOW
2.5
ns
WL
Clock Width
HIGH
t
2.5
ns
WH
External Feedback
Maximum Frequency (Note 3) Internal Feedback (f
1/(t + t
)
142.8
150
200
MHz
MHz
MHz
ns
S
CO
f
)
1/(t + t ) (Note 4)
CF
MAX
CNT
S
No Feedback
Input to Output Enable Using Product Term Control
Input to Output Disable Using Product Term Control
1/(t + t )
WH WL
t
6
EA
t
5.5
ns
ER
Notes:
1. See “Switching Test Circuit” for test conditions.
2. Skew is measured with all outputs switching in the same direction.
3. These parameters are not 100% tested, but are calculated at initial characterization and at any time the design is modified where
frequency may be affected.
4. t is a calculated value and is not guaranteed. t can be found using the following equation:
CF
CF
t
= 1/f
(internal feedback) - t .
CF
MAX S
PALCE22V10H-5 (Com’l)
9
LATTICE [ LATTICE SEMICONDUCTOR ]
