Atmel ATF16V8B - Page 5

5
0364J–PLD–7/05
ATF16V8B/BQ/BQL
4.2 AC Waveforms
(1)
Note: 1. Timing measurement reference is 1.5V. Input AC driving levels are 0.0V 3.0V, unless otherwise
specified.
Note: 1. See ordering information for valid part numbers and speed grades.
4.3 AC Characteristics
(1)
Symbol Parameter
-10 -15
UnitsMin Max Min Max
t
PD
Input or Feedback to
Non-Registered Output
8 outputs switching
310315
ns
t
CF
Clock to Feedback 6 8 ns
t
CO
Clock to Output 2 7 2 10 ns
t
S
Input or Feedback
Setup Time
7.5 12 ns
t
H
Hold Time 0 0 ns
t
P
Clock Period 12 16 ns
t
W
Clock Width 6 8 ns
f
MAX
External Feedback 1/(t
S
+ t
CO
)6845MHz
Internal Feedback 1/(t
S
+ t
CF
)7450MHz
No Feedback 1/(t
P
)8362MHz
t
EA
Input to Output Enable — Product Term 3 10 3 15 ns
t
ER
Input to Output Disable — Product Term 2 10 2 15 ns
t
PZX
OE pin to Output Enable 2 10 2 15 ns
t
PXZ
OE pin to Output Disable 1.5 10 1.5 15 ns