USE ULTRA37000™ FOR
ALL NEW DESIGNS
PLDC20G10B
PLDC20G10
Document #: 38-03010 Rev. *A
Page 6 of 14
AC Test Loads and Waveforms (Commercial)
5V
OUTPUT
INCLUDING
JIG AND
SCOPE
OUTPUT
50pF
2.08V=Vthc
OUTPUT
2.13V=V thm
(a)
(b)
5V
OUTPUT
INCLUDING
JIG AND
SCOPE
5pF
R1 238
Ω
(319
Ω MIL)
R1 238
Ω
(319
Ω MIL)
R2 170
Ω
(236
Ω MIL)
R2 170
Ω
(236
Ω MIL)
Equivalent to: THÉVENIN EQUIVALENT (Commercial)
Equivalent to: THÉVENIN EQUIVALENT (Military/Industrial)
99
Ω
136
Ω
Switching Characteristics Over Operating Range[3, 8, 9]
Parameter
Description
Commercial
Unit
B–15
B–20
–25
–35
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
tPD
Input or Feedback to Non-Registered Output
15
20
25
35
ns
tEA
Input to Output Enable
15
20
25
35
ns
tER
Input to Output Disable
15
20
25
35
ns
tPZX
Pin 11 to Output Enable
12
15
20
25
ns
tPXZ
Pin 11 to Output Disable
12
15
20
25
ns
tCO
Clock to Output
10
12
15
25
ns
tS
Input or Feedback Set-up Time
12
12
15
30
ns
tH
Hold Time
0
0
0
0
ns
tP
[10]
Clock Period
22
24
30
55
ns
tWH
Clock High Time
8
10
12
17
ns
tWL
Clock Low Time
8
10
12
17
ns
fMAX
[11]
Maximum Frequency
45.4
41.6
33.3
18.1
MHz
Switching Characteristics Over Operating Range [3, 8, 9]
Parameter
Description
Military/Industrial
Unit
B–20
B–25
–30
–40
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
tPD
Input or Feedback to Non-Registered Output
20
25
30
40
ns
tEA
Input to Output Enable
20
25
30
40
ns
tER
Input to Output Disable
20
25
30
40
ns
tPZX
Pin 11 to Output Enable
17
20
25
25
ns
tPXZ
Pin 11 to Output Disable
17
20
25
25
ns
tCO
Clock to Output
15
15
20
25
ns
tS
Input or Feedback Set-Up Time
15
18
20
35
ns
tH
Hold Time
0
0
0
0
ns
Notes:
8. Part (a) of AC Test Loads and Waveforms used for all parameters except tER, tPZX, and tPXZ. Part (b) of AC Test Loads and Waveforms used for tER, tPZX, and tPXZ.
9. The parameters tER and tPXZ are measured as the delay from the input disable logic threshold transition to VOH – 0.5V for an enabled HIGH output or VOL +
0.5V for an enabled LOW input.
10. tP, minimum guaranteed clock period is that guaranteed for state machine operation and is calculated from tP = tS + tCO. The minimum guaranteed period for
registered data path operation (no feedback) can be calculated as the greater of (tWH + tWL) or (tS + tH).
11. fMAX, minimum guaranteed operating frequency, is that guaranteed for state machine operation and is calculated from fMAX = 1/(tS + tCO). The minimum
guaranteed fMAX for registered data path operation (no feedback) can be calculated as the lower of 1/(tWH + tWL) or 1/(tS + tH).
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