SN54ALS109A, SN54AS109A, SN74ALS109A, SN74AS109A

DUAL JK POSITIVEEDGETRIGGERED FLIPFLOPS

WITH CLEAR AND PRESET

SDAS198B − APRIL 1982 − REVISED AUGUST 1995

5

POST OFFICE BOX 655303

POST OFFICE BOX 1443

switching characteristics (see Figure 1)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 4.5 V to 5.5 V,

CL = 50 pF,

RL = 500 Ω,

TA = MIN to MAX†

UNIT

PARAMETER

(INPUT)

(OUTPUT)

SN54AS109A

SN74AS109A

UNIT

MIN

MAX

MIN

MAX

fmax*

90

105

MHz

tPLH

PRE or CLR

Q or Q

2

9

2

8

ns

tPHL

PRE or CLR

Q or Q

3.5

11.5

3.5

10.5

ns

tPLH

CLK

Q or Q

2.5

10

2.5

9

ns

tPHL

CLK

Q or Q

3.5

10.5

3.5

9

ns

* On products compliant to MIL-STD-883, Class B, this parameter is based on characterization data but is not production tested.

† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.