MHz

fmax‡

CLK

ns

TIBPLS506AC

13

× 97 × 8 FIELD-PROGRAMMABLE LOGIC SEQUENCER

SRPS003C – D3090, DECEMBER 1987 – REVISED NOVEMBER 1995

POST OFFICE BOX 655303

6

switching characteristics over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

TEST CONDITION

MIN

TYP†

MAX

UNIT

Without C-array

58

65

With C-array

33

45

External feedback without C-array

45

60

External feedback with C-array

R1 = 300

Ω,

28.5

40

Q (nonregistered)

R2 = 390

Ω,

6

25

tpd

Q (registered)

See Figure 5

3

10

I or Feedback

Q (nonregistered)

6

20

ns

ten

OE

↓

Q

1

6

10

ns

tdis

OE

↑

Q

1

6

10

ns

† All typical values are at VCC = 5 V, TA = 25°C.

‡ See the fmax calculations section.

The following is a brief description of how the different operating frequencies can be achieved when using the

TIBPLS506A.

1

tsu ) tpd CLK to Q

+

1

(12 + 5) ns

+

1

17 ns

+ 58 MHz.

1

tsu ) tpd CLK to Q

from CLK and feedback, 25 to 20)

+

1

(25 + 5) ns

+

1

30 ns

+ 33 MHz.

1

tsu ) tpd CLK to Q

+

1

(12 + 10) ns

+

1

22 ns

+ 45 MHz.

1

tsu ) tpd CLK to Q

+

1

(25 + 10) ns

+

1

35 ns

+ 28.5 MHz.