SN54AS866, SN74AS866A

8BIT MAGNITUDE COMPARATORS

SDAS183A − DECEMBER 1982 − REVISED JUNE 1990

POST OFFICE BOX 655303

POST OFFICE BOX 1443

5

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

SN54AS866

SN74AS866A

UNIT

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

MIN

TYP†

MAX

UNIT

VIK

VCC = 4.5 V,

II = − 18 mA

− 1.2

− 1.2

V

VOH

P>Q, P<Q

VCC = 4.5 V to 5.5 V,

IOH = − 2 mA

VCC −2

VCC −2

IOH

P=Q only

VCC = 4.5 V,

VOH = 5.5 V

0.25

0.25

mA

VOL

VCC = 4.5 V,

IOL = 20 mA

0.35

0.5

0.35

0.5

V

II

VCC = 5.5 V,

VI = 7 V

0.1

0.1

mA

IIH

L/A, OLE

VCC = 5.5 V,

VI = 2.7 V

40

40

µA

IIH

Others

VCC = 5.5 V,

VI = 2.7 V

20

20

µA

L/A, OLE,

P>Qin,

−4

−4

IIL

P<Qin

VCC = 5.5 V,

VI = 0.4 V

mA

IIL

CLRQ

VCC = 5.5 V,

VI = 0.4 V

−2

−2

mA

P, Q, PLE, QLE

− 0.25

−1

− 0.25

IO‡

VCC = 5.5 V,

VO = 2.25 V

−20

−112

−20

−112

mA

ICC

VCC = 5.5 V,

See Note 1

160

240

160

240

mA

NOTE 1: ICC is measured with all inputs high except L/A, which is low.

switching characteristics (see Note 2

VCC = 4.5 V to 5.5 V,

VCC = 4.5 V to 5.5 V,

CL = 50 pF,

PARAMETER

FROM

TO

CL = 50 pF,

RL = 500 Ω,

§

UNIT

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

RL = 500 Ω,

TA = MIN to MAX§

UNIT

(INPUT)

(OUTPUT)

SN54AS866

SN74AS866A

MIN

TYP†

MAX

MIN

TYP†

MAX

tPLH

L/A

1

8.5

14

1

8.5

19

ns

tPHL

L/A

1

7.5

14

1

7

13

ns

tPLH

P<Q, P>Q

1

5

10

1

5

8

ns

tPHL

P<Q, P>Q

P<Q, P>Q

1

5.5

10

1

5.5

8

ns

tPLH

Any P or Q

Data Input

P<Q, P>Q

1

13.5

21

1

13.5

17.5

ns

tPHL

Any P or Q

Data Input

1

10

17

1

10

15

ns

tPLH

CLRQ

1

16

21

1

16

20

ns

tPHL

CLRQ

1

12

17

1

12

16

ns

VCC = 4.5 V to 5.5 V,

VCC = 4.5 V to 5.5 V,

CL = 50 pF,

R = 280

,

PARAMETER

FROM

TO

CL = 50 pF,

RL = 280 Ω,

T

= MIN to MAX§

UNIT

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

RL = 280 Ω,

TA = MIN to MAX§

UNIT

PARAMETER

(INPUT)

(OUTPUT)

SN54AS866

SN74AS866A

UNIT

MIN

TYP†

MAX

MIN

TYP†

MAX

tPLH

P<Q,

P=Q

1

6.5

12

1

6.5

16

ns

tPHL

P>Q

P=Q

1

8

14

1

8

14

ns

tPLH

Any P or Q

Data Input

P=Q

1

10

15

1

10

17

ns

tPHL

Any P or Q

Data Input

P=Q

1

9

14

1

9

14

ns

tPLH

CLRQ

P=Q

1

12

17

1

12

24

ns

tPHL

CLRQ

P=Q

1

13

18

1

13

21

ns

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

‡ The output conditions have been chosen to produce a current that closely approximates one-half of the true short-circuit, IOS.

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

NOTE 2: Load circuit and voltage waveforms are shown in Section 1 of the ALS/AS Logic Data Book, 1986.

PRODUCT PREVIEW information concerns products in the formative or

design phase of development. Characteristic data and other specifications

are design goals. Texas Instruments reserves the right to change or

discontinue these products without notice.