AT17C/LV65/128/256
10
Notes: 1. Preliminary specifications for military operating range only.
2. AC test lead = 50 pF.
3. Float delays are measured with 5 pF AC loads. Transition is measured ±200 mV from steady state active levels.
AC Characteristics for AT17LV65/128/256
V
CC
= 3.3V ± 10%
Symbol Description
Commercial Industrial/Military
(1)
UnitsMin Max Min Max
T
OE
(2)
OE to Data Delay 50 55 ns
T
CE
(2)
CE to Data Delay 60 60 ns
T
CAC
(2)
CLK to Data Delay 75 80 ns
T
OH
Data Hold from CE, OE, or CLK 0 0 ns
T
DF
(3)
CE or OE to Data Float Delay 55 55 ns
T
LC
CLK Low Time 25 25 ns
T
HC
CLK High Time 25 25 ns
T
SCE
CE Setup Time to CLK (to guarantee proper counting) 35 60 ns
T
HCE
CE Hold Time from CLK (to guarantee proper counting) 0 0 ns
T
HOE
OE High Time (guarantees counter is reset) 25 25 ns
F
MAX
MAX Input Clock Frequency 10 10 MHz
AC Characteristics for AT17LV128/256 When Cascading
V
CC
= 3.3V ± 10%
Symbol Description
Commercial Industrial/Military
(1)
UnitsMin Max Min Max
T
CDF
(3)
CLK to Data Float Delay 60 60 ns
T
OCK
(2)
CLK to CEO Delay 55 60 ns
T
OCE
(2)
CE to CEO Delay 55 60 ns
T
OOE
(2)
RESET/OE to CEO Delay 40 45 ns
F
MAX
MAX Input Clock Frequency 8 8 MHz
