TIB82S105BC

16

× 48 × 8 FIELD-PROGRAMMABLE LOGIC SEQUENCER

WITH 3-STATE OUTPUTS OR PRESET

SRPS025A – D2897, SEPTEMBER 1985 – REVISED NOVEMBER 1995

POST OFFICE BOX 655303

Copyright

1

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Output Register

Output Control

description

The TIB82S105BC is a TTL field-programmable

state machine of the Mealy type. This state

machine (logic sequencer) contains 48 product

terms (AND terms) and 14 pairs of sum terms (OR

terms). The product and sum terms are used to

control the 6-bit internal state register and the 8-bit

output register.

The outputs of the internal state register (P0 – P5)

are fed back and combined with the 16 inputs

(I0 – I15) to form the AND array. In addition a single

sum term is complemented and fed back to the

AND array, which allows any of the product terms

to be summed, complemented, and used as an

input to the AND array.

The state and output registers are positive-edge-

triggered S/R flip-flops. These registers are

unconditionally preset high during power up.

Pin19 can be used to preset both registers or, by

blowing the proper fuse, be converted to an output

control function.

The TIB82S105BC is characterized for operation

from 0

°C to 75°C.

† Power-up preset and asynchronous preset functions are not identical to 82S105A. See Recommended Operating Conditions.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

CLK

I7

I6

I5

I4

I3

I2

I1

I0

Q7

Q6

Q5

Q4

GND

I8

I9

I10

I11

I12

I13

I14

I15

PRE/OE

Q0

Q1

Q2

Q3

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32 1 28 27

12 13

5

6

7

8

9

10

11

25

24

23

22

21

20

19

I10

I11

I12

I13

I14

I15

PRE/OE

I4

I3

I2

I1

I0

Q7

Q6

426

14 15 16 17 18

FN PACKAGE

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