PALCE20V8 Datasheet, PDF (11/16 Pages) Advanced Micro Devices – EE CMOS 24-Pin Universal Programmable Array Logic

AMD
CAPACITANCE (Note 1)
Parameter
Symbol
Parameter Description
Test Conditions
Typ
Unit
CIN
Input Capacitance
VIN = 2.0 V VCC = 5.0 V, TA = 25°C,
5
pF
COUT
Output Capacitance
VOUT = 2.0 V f = 1 MHz
8
pF
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 (Note 2)
Parameter
Symbol Parameter Description
-15
Min Max
-25
Min Max
tPD
Input or Feedback to Combinatorial Output
15
25
tS
Setup Time from Input or Feedback to Clock
12
15
tH
Hold Time
0
0
tCO
Clock to Output
10
12
tWL
LOW
Clock Width
tWH
HIGH
8
12
8
12
External Feedback
Maximum
1/(tS + tCO)
45.5
37
fMAX
Frequency ^{Internal Feedback (fCNT) 1/(tS + tCF) (Note 4) 50}
40
(Note 3)
No Feedback
1/(tWH + tWL)
62.5
41.6
tPZX
OE to Output Enable
15
20
tPXZ
OE to Output Disable
15
20
tEA
Input to Output Enable Using Product Term Control
15
25
tER
Input to Output Disable Using Product Term Control
15
25
Unit
ns
ns
ns
ns
ns
ns
MHz
MHz
MHz
ns
ns
ns
ns
Notes:
2. See Switching Test Circuit for test conditions.
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. tCF is a calculated value and is not guaranteed. tCF can be found using the following equation:
tCF = 1/fMAX (internal feedback) – tS.
PALCE20V8H-15/25 Q-15/25 (Com’l)
2-173