AT17 Series

9

AC Characteristics

V

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 afrom steady state active levels.

4. During cascade F

Symbol

Description

Commercial

Industrial/Military

Units

Min

Max

Min

Max

T

OE

(2)

OE to Data Delay

40

45

ns

T

CE

(2)

CE to Data Delay

60

60

ns

T

CAC

(2)

CLK to Data Delay

75

80

ns

T

OH

(2)

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 to CLk (to guarantee proper counting)

0

0

ns

T

HOE

OE High Time (guarantees counter is reset)

25

25

ns

F

MAX

(4)

MAX Input Clock Frequency

10

8

10

MHz

AC Characteristics When Cascading

V

Symbol

Description

Commercial

Industrial/Military

Units

Min

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