AT17 Series

8

AC Characteristics for AT17C65/128

V

Symbol

Description

Commercial

Industrial/Military

Units

Min

Max

Min

Max

(2)

OE to Data Delay

110

150

ns

(2)

CE to Data Delay

50

50

ns

(2)

CLK to Data Delay

50

55

ns

(2)

Data Hold From CE, OE, or CLK

0

0

ns

(3)

CE or OE to Data Float Delay

50

50

ns

CLK Low Time

30

35

ns

CLK High Time

30

35

ns

CE Setup Time to CLK (to guarantee proper counting)

45

50

ns

CE Hold Time to CLk (to guarantee proper counting)

0

5

ns

OE High Time (guarantees counter is reset)

50

60

ns

(4)

MAX Input Clock Frequency

10

10

MHz

AC Characteristics for AT17C65/128 When Cascading

V

Notes:

1. Preliminary specifications for military operating range only.

2. AC test load = 50 pf.

3. Float delays are measured with 5 pF AC loads. Transition is measured

±200 mV from steady state active levels.

4. During cascade F

Symbol

Description

Commercial

Industrial/Military

Units

Min

Max

Min

Max

T

CDF

(3)

CLK to Data Float Delay

50

50

ns

T

OCK

(2)

CLK to CEO Delay

65

75

ns

T

OCE

(2)

CE to CEO Delay

55

60

ns

T

OE

(2)

RESET/OE to CEO Delay

55

55

ns