SN54AS885, SN74AS885

8-BIT MAGNITUDE COMPARATORS

SDAS236A – DECEMBER 1982 – REVISED JANUARY 1995

2

POST OFFICE BOX 655303

FUNCTION TABLE

INPUTS

OUTPUTS

COMPARISON

L/A

DATA

P0 – P7,

Q0 – Q7

P > QIN

P < QIN

P > QOUT

P < QOUT

Logical

H

P > Q

X

X

H

L

Logical

H

P < Q

X

XL

H

Logical†

H

P = Q

H or L

H or L

H or L

H or L

Arithmetic

L

P AG Q

X

XH

L

Arithmetic

L

Q AG P

X

XL

H

Arithmetic†

L

P = Q

H or L

H or L

H or L

H or L

† In these cases, P > QOUT follows P > QIN and P < QOUT follows P < QIN.

AG = arithmetically greater than

C1

23

PLE

M [ARITH, 2s COMP]

1D

15

P0

16

P1

17

P2

18

P3

>

3

P > QIN

<

2

P < QIN

P > QOUT

13

P > Q

P < QOUT

14

P < Q

19

P4

20

P5

21

P6

22

P7

0

11

Q0

10

Q1

9

Q2

8

Q3

7

Q4

6

Q5

5

Q6

7

4

Q7

M [LOGIC]

1

COMP

1=0 0

7

P

Q

L/A

‡ This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.

Pin numbers shown are for the DW, JT, and NT packages.