GAL16V8B-20LJ View Datasheet(PDF) - Lattice Semiconductor
Part Name
Description
Manufacturer
GAL16V8B-20LJ Datasheet PDF : 23 Pages
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SpSepceifcicifaictaiotinosnGs GALA1L61V68VC8
AC SWITCHING CHARACTERISTICS
Over Recommended Operating Conditions
COM
COM
IND
TEST
PARAMETER COND1.
DESCRIPTION
tpd
A
Input or I/O to
8 outputs switching
-5
-7
-7
UNITS
MIN. MAX. MIN. MAX. MIN. MAX.
1 5 3 7.5 1 7.5 ns
Comb. Output
1 output switching
— — — 7 — — ns
tco
A
Clock to Output Delay
tcf2
— Clock to Feedback Delay
tsu
— Setup Time, Input or Feedback before Clock↑
th
— Hold Time, Input or Feedback after Clock↑
A
Maximum Clock Frequency with
External Feedback, 1/(tsu + tco)
14
—3
3—
0—
142.8 —
25 1 5
—3 — 3
7— 7 —
0— 0 —
83.3 — 83.3 —
ns
ns
ns
ns
MHz
fmax3
A
Maximum Clock Frequency with
Internal Feedback, 1/(tsu + tcf)
A
Maximum Clock Frequency with
No Feedback
166 — 100 — 100 — MHz
166 — 100 — 100 — MHz
twh
— Clock Pulse Duration, High
twl
— Clock Pulse Duration, Low
ten
B
Input or I/O to Output Enabled
B
OE to Output Enabled
3—
3—
16
16
5 — 5 — ns
5 — 5 — ns
3 9 1 9 ns
2 6 1 6 ns
tdis
C
Input or I/O to Output Disabled
C
OE to Output Disabled
1 5 2 9 1 9 ns
1 5 1.5 6 1 6 ns
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
parameters.
CAPACITANCE (TA = 25°C, f = 1.0 MHz)
SYMBOL
PARAMETER
CI
Input Capacitance
C
I/O Capacitance
I/O
*Guaranteed but not 100% tested.
MAXIMUM*
8
8
UNITS
pF
pF
TEST CONDITIONS
VCC = 5.0V, VI = 2.0V
V = 5.0V, V = 2.0V
CC
I/O
3-75
1996 Data Book
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