TIBPAL20L8-15C, TIBPAL20R4-15C, TIBPAL20R6-15C, TIBPAL20R8-15C

TIBPAL20L8-20M, TIBPAL20R4-20M, TIBPAL20R6-20M, TIBPAL20R8-20M

HIGH-PERFORMANCE

SRPS021A − D2920, JUNE 1986 − REVISED DECEMBER 2010

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.

TIBPAL20R’ -15C Series . . . 45 MHz

TIBPAL20R’ -20M Series . . . 41.6 MHz

PAL20L8, PAL20R4, PAL20R6, PAL20R8

Register Outputs are Set Low, but Voltage

Levels at the Output Pins Go High)

Simplifies Testing

Ceramic Chip Carriers in Addition to Plastic

and Ceramic DIPs

DEVICE

I

INPUTS

3-STATE

O OUTPUTS

REGISTERED

Q OUTPUTS

I/O

PORT

S

PAL20L8

14

2

0

6

PAL20R4

12

0

4 (3-state buffers)

4

PAL20R6

12

0

6 (3-state buffers)

2

PAL20R8

12

0

8 (3-state buffers)

0

description

These programmable array logic devices feature

high speed and functional equivalency when

compared with currently available devices. These

IMPACT™ circuits combine the latest Advanced

Low-Power Schottky technology with proven

titanium-tungsten fuses to provide reliable,

high-performance substitutes for conventional

TTL logic. Their easy programmability allows for

quick design of custom functions and typically

results in a more compact circuit board. In

addition, chip carriers are available for futher

reduction in board space.

Extra circuitry has been provided to allow loading of each register asynchronously to either a high or low state.

This feature simplifies testing because the registers can be set to an initial state prior to executing the test

sequence.

The TIBPAL20’ C series is characterized from 0°C to 75°C. The TIBPAL20’ M series is characterized for

operation over the full military temperature range of −55°C to 125°C.

IMPACT is a trademark of Texas Instruments Incorporated.

PAL is a registered trademark of Advanced Micro Devices Inc.

1

2

3

4

5

6

7

8

9

10

11

12

24

23

22

21

20

19

18

17

16

15

14

13

I

I

I

I

I

I

I

I

I

I

I

GND

I

O

I/O

I/O

I/O

I/O

I/O

I/O

O

I

I

TIBPAL20L8’

C SUFFIX . . . JT OR NT PACKAGE

M SUFFIX . . . JT OR W PACKAGE

(TOP VIEW)

32 1 28 27

12 13

5

6

7

8

9

10

11

25

24

23

22

21

20

19

I/O

I/O

I/O

NC

I/O

I/O

I/O

I

I

I

NC

I

I

I

426

14 15 16 17 18

TIBPAL20L8’

C SUFFIX . . . FN PACKAGE

M SUFFIX . . . FK PACKAGE

(TOP VIEW)

NC

Pin assignments in operating mode