SN54AS181B, SN74AS181A

ARITHMETIC LOGIC UNITS/FUNCTION GENERATORS

SDAS209B – DECEMBER 1982 – REVISED DECEMBER 1994

9

POST OFFICE BOX 655303

switching characteristics (see Figure 3)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

TEST CONDITIONS†

VCC = 4.5 V to 5.5 V,

CL = 50 pF,

TA = MIN to MAX‡

UNIT

(INPUT)

(OUTPUT)

SN54AS181B

SN74AS181A

MIN

MAX

MIN

MAX

tPLH

C

C

3

9

2

9

ns

tPHL

Cn

Cn + 4

2

7

2

9

ns

tPLH

An A or B

C

M = 0, S1 = S2 = 0,

2

16

2

12

ns

tPHL

Any A or B

Cn + 4

,,

S0 = S3 = 4.5 V (SUM mode)

2

14

2

12

ns

tPLH

An A or B

C

M = 0, S1 = S3 = 0,

3

18

4

16

ns

tPHL

Any A or B

Cn + 4

,,

S1 = S2 = 4.5 V (DIFF mode)

3

14.5

2

16

ns

tPLH

C

An F

M

0 (SUM or DIFF mode)

3

10.5

3

9

ns

tPHL

Cn

Any F

M = 0 (SUM or DIFF mode)

3

10

3

9

ns

tPLH

An A or B

G

M = 0, S1 = S2 = 0,

3

9.5

2

8

ns

tPHL

Any A or B

G

,,

S0 = S3 = 4.5 V (SUM mode)

2

7

2

7

ns

tPLH

An A or B

G

M = 0, S1 = S3 = 0,

3

12

2

9.5

ns

tPHL

Any A or B

G

,,

S1 = S2 = 4.5 V (DIFF mode)

2

9

2

9

ns

tPLH

An A or B

P

M = 0, S1 = S2 = 0,

3

9.5

2

8

ns

tPHL

Any A or B

P

,,

S0 = S3 = 4.5 V (SUM mode)

2

7.5

2

8

ns

tPLH

An A or B

P

M = 0, S1 = S3 = 0,

3

12

2

10

ns

tPHL

Any A or B

P

,,

S1 = S2 = 4.5 V (DIFF mode)

3

8.5

2

10

ns

tPLH

AiorBi

Fi

M = 0, S1 = S2 = 0,

3

11

2

9.5

ns

tPHL

Ai or Bi

Fi

,,

S0 = S3 = 4.5 V (SUM mode)

3

9

2

8

ns

tPLH

AiorBi

Fi

M = 0, S1 = S3 = 0,

3

13.5

2

10.5

ns

tPHL

Ai or Bi

Fi

,,

S1 = S2 = 4.5 V (DIFF mode)

3

11

2

10

ns

tPLH

AiorBi

Fi

M

4 5 V (LOGIC mode)

3

16

2

11

ns

tPHL

Ai or Bi

Fi

M = 4.5 V (LOGIC mode)

3

10

2

11

ns

tPLH

Any A or B

AB

M = 0, S1 = S3 = 0,

2

19

4

21

ns

tPHL

Any A or B

A = B

,,

S1 = S2 = 4.5 V (DIFF mode)

3

22

4

21

ns

† Refer to the parameter measurement information tables for the SUM-, DIFF-, and LOGIC-mode test tables.

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