GAL20V8 Lattice Semiconductor, GAL20V8 Datasheet - Page 11

• Manufacturer Part Number: GAL20V8
• Description: High Performance E2CMOS PLD Generic Array Logic
• Manufacturer: Lattice Semiconductor

*Characterized but not 100% tested
1) Refer to Switching Test Conditions section.
2) Calculated from fmax with internal feedback. Refer to fmax Descriptions section.
3) Refer to fmax Descriptions section. Characterized initially and after any design or process changes that may affect these
PARAMETER
AC Switching Characteristics
Capacitance (T
parameters.
SYMBOL
f
max
t
t
t
t
t
t
t
t
t
wh
dis
pd
co
cf
su
en
wl
h
C
C
2
I/O
I
3
COND
TEST
—
—
—
—
—
C
A
A
A
A
A
B
B
C
1
.
A
= 25 C, f = 1.0 MHz)
Input or I/O to
Comb. Output
Clock to Output Delay
Clock to Feedback Delay
Setup Time, Input or Feedback before Clock
Hold Time, Input or Feedback after Clock
Maximum Clock Frequency with
External Feedback, 1/(tsu + tco)
Maximum Clock Frequency with
Internal Feedback, 1/(tsu + tcf)
Maximum Clock Frequency with
No Feedback
Clock Pulse Duration, High
Clock Pulse Duration, Low
Input or I/O to Output Enabled
OE to Output Enabled
Input or I/O to Output Disabled
OE to Output Disabled
DESCRIPTION
Input Capacitance
I/O Capacitance
PARAMETER
Over Recommended Operating Conditions
8 outputs switching
1 output switching
MAXIMUM*
8
8
11
Specifications GAL20V8C
UNITS
Specifications GAL20V8
pF
pF
142.8 —
166
166
MIN. MAX.
—
—
1
1
3
0
3
3
1
1
1
1
COM
-5
—
—
—
—
—
—
—
5
4
3
6
6
5
5
MIN. MAX.
100
125
125
1.5
—
—
3
2
5
0
4
4
3
2
2
V
COM
TEST CONDITIONS
V
CC
-7
CC
= 5.0V, V
7.5
= 5.0V, V
—
—
—
—
—
—
—
7
5
3
9
6
9
6
66.7
71.4
83.3
MIN. MAX.
7.5
1.5
COM/IND
—
—
3
2
0
6
6
3
2
2
I/O
-10
I
= 2.0V
= 2.0V
10
10
10
10
10
—
—
—
—
—
—
—
—
7
6
UNITS
MHz
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns