Specifications GAL16V8

12

A

Input or I/O to Comb. Output

3

10

3

15

3

20

3

25

ns

A

Clock to Output Delay

2

7

2

10

2

11

2

12

ns

—

Clock to Feedback Delay

—

6

—

8

—

9

—

10

ns

—

Setup Time, Input or Fdbk before Clk

↑

7.5

—

12

—

13

—

15

—

ns

—

Hold Time, Input or Fdbk after Clk

↑

0

—

0—

0—

0

—

ns

A

Maximum Clock Frequency with

66.7

—

45.5

—

41.6

—

37

—

MHz

External Feedback, 1/(tsu + tco)

A

Maximum Clock Frequency with

71.4

—

50

—

45.4

—

40

—

MHz

Internal Feedback, 1/(tsu + tcf)

A

Maximum Clock Frequency with

83.3

—

62.5

—

50

—

41.6

—

MHz

No Feedback

—

Clock Pulse Duration, High

6

—

8

—

10

—

12

—

ns

—

Clock Pulse Duration, Low

6

—

8

—

10

—

12

—

ns

B

Input or I/O to Output Enabled

1

10

—

15

—

18

—

20

ns

t

B

OE to Output Enabled

1

10

—

15

—

18

—

20

ns

C

Input or I/O to Output Disabled

1

10

—

15

—

18

—

20

ns

t

C

OE to Output Disabled

1

10

—

15

—

18

—

20

ns

AC Switching Characteristics

Over Recommended Operating Conditions

UNITS

-25

MIN.

MAX.

-20

MIN.

MAX.

-15

MIN.

MAX.

-10

MIN.

MAX.

PARAM.

DESCRIPTION

TEST

COM / IND

COM / IND

IND

COM / IND

SYMBOL

PARAMETER

MAXIMUM*

UNITS

TEST CONDITIONS

C

I

Input Capacitance

8

pF

V

C

I/O

I/O Capacitance

8

pF

V

*Characterized but not 100% tested.

1) Refer to Switching Test Conditions section.

2) Calculated from fmax with internal feedback. Refer to fmax Descriptions section.

3) Refer to fmax Descriptions section. Characterized but not 100% tested.

Specifications GAL16V8D

Capacitance (T