CAPACITANCE 1
Parameter
Symbol
Parameter Description
Test Conditions
Typ
Unit
C
Input Capacitance
Output Capacitance
V = 2.0 V
IN
V = 5.0 V
CC
5
IN
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
-7
PDIP
PLCC
Parameter
Symbol
Parameter Description
Input or Feedback to Combinatorial Output
Min
3
Max
Min
3
Max
Unit
ns
t
7.5
7.5
PD
t
Setup Time from Input or Feedback
Setup Time from SP to Clock
Hold Time
5
4.5
6
ns
S1
t
6
ns
S2
t
0
0
ns
H
t
Clock to Output
2
5
1
2
4.5
1
ns
CO
t
Skew Between Registered Outputs (Note 2)
Asynchronous Reset to Registered Output
Asynchronous Reset Width
ns
SKEWR
t
10
10
ns
AR
t
7
7
7
7
ns
ARW
t
Asynchronous Reset Recovery Time
Synchronous Preset Recovery Time
ns
ARR
t
7
7
ns
SPR
t
LOW
3.5
3.5
100
3.0
3.0
111
ns
WL
Clock Width
HIGH
t
ns
WH
External Feedback
1/(t + t
)
MHz
S
CO
Maximum Frequency
(Note 3)
Internal Feedback
(f
f
1/(t + t ) (Note 4)
CF
125
133
166
MHz
MAX
S
)
CNT
No Feedback
1/(t + t
)
142.8
MHz
ns
WH WL
t
Input to Output Enable Using Product Term Control
Input to Output Disable Using Product Term Control
7.5
7.5
7.5
7.5
EA
t
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-7 (Com’l)
11
LATTICE [ LATTICE SEMICONDUCTOR ]
