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T l r m r, l s v iw wrcl . m
o e n oe p ae it w . e c o
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e
s
o ec
OBSOLETE - No Longer Available
TIBPAL20L8-5C, TIBPAL20R4-5C, TIBPAL20R6-5C, TIBPAL20R8-5C
TIBPAL20L8-7M, TIBPAL20R4-7M, TIBPAL20R6-7M, TIBPAL20R8-7M
HIGH-PERFORMANCE
IMPACT-X
™
PAL
®
CIRCUITS
•
High-Performance Operation:
f
max
(no feedback)
TIBPAL20R’ -5C Series . . . 125 MHz Min
TIBPAL20R’ -7M Series . . . 100 MHz Min
f
max
(internal feedback)
TIBPAL20R’ -5C Series . . . 125 MHz Min
TIBPAL20R’ -7M Series . . . 100 MHz Min
f
max
(external feedback)
TIBPAL20R’ -5C Series . . . 117 MHz Min
TIBPAL20R’ -7M Series . . . 74 MHz Min
Propagation Delay
TIBPAL20L8-5C Series . . . 5 ns Max
TIBPAL20L8-7M Series . . . 7 ns Max
TIBPAL20R’ -5C Series
(CLK-to-Q) . . . 4 ns Max
TIBPAL20R’ -7M Series
(CLK-to-Q) . . . 6.5 ns Max
Functionally Equivalent, but Faster Than,
Existing 24-Pin PLDs
Preload Capability on Output Registers
Simplifies Testing
Power-Up Clear on Registered Devices (All
Register Outputs are Set Low, but Voltage
Levels at the Output Pins Go High)
Package Options Include Both Plastic and
Ceramic Chip Carriers in Addition to Plastic
and Ceramic DIPs
Security Fuse Prevents Duplication
DEVICE
PAL20L8
PAL20R4
PAL20R6
PAL20R8
I
INPUTS
14
12
12
12
3-STATE
O OUTPUTS
2
0
0
0
REGISTERED
Q OUTPUTS
0
4 (3-state buffers)
6 (3-state buffers)
8 (3-state buffers)
I/O
PORT
S
6
4
2
0
SRPS010F – D3353, OCTOBER 1989 – REVISED SEPTEMBER 1992
TIBPAL20L8’
C SUFFIX . . . JT OR NT PACKAGE
M SUFFIX . . . JT PACKAGE
(TOP VIEW)
I
I
I
I
I
I
I
I
I
I
I
GND
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
V
CC
I
O
I/O
I/O
I/O
I/O
I/O
I/O
O
I
I
•
•
•
•
•
TIBPAL20L8’
C SUFFIX . . . FN PACKAGE
M SUFFIX . . . FK PACKAGE
(TOP VIEW)
I
I
I
NC
I
I
I
5
6
7
8
9
10
I
I
I
NC
V
CC
I
O
4
3 2 1 28 27 26
25
24
23
22
21
20
11
19
12 13 14 15 16 17 18
I/O
I/O
I/O
NC
I/O
I/O
I/O
description
NC
–
No internal connection
Pin assignments in operating mode
These programmable array logic devices feature high speed and functional equivalency when compared with
currently available devices. These IMPACT-X™ 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.
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.
These devices are covered by U.S. Patent 4,410,987.
IMPACT-X is a trademark of Texas Instruments Incorporated.
PAL is a registered trademark of Advanced Micro Devices Inc.
This document contains information on products in more than one
phase of development. The status of each device is indicated on the
page(s) specifying its electrical characteristics.
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
I
I
GND
NC
I
I
O
Copyright
©
1992, Texas Instruments Incorporated
1
OBSOLETE - No Longer Available
SRPS010F – D3353, OCTOBER 1989 – REVISED SEPTEMBER 1992
TIBPAL20R4-5C, TIBPAL20R6-5C, TIBPAL20R8-5C
TIBPAL20R4-7M, TIBPAL20R6-7M, TIBPAL20R8-7M
HIGH-PERFORMANCE
IMPACT-X
™
PAL
®
CIRCUITS
TIBPAL20R4’
C SUFFIX . . . JT OR NT PACKAGE
M SUFFIX . . . JT PACKAGE
(TOP VIEW)
CLK
I
I
I
I
I
I
I
I
I
I
GND
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
VCC
I
I/O
I/O
Q
Q
Q
Q
I/O
I/O
I
OE
TIBPAL20R4’
C SUFFIX . . . FN PACKAGE
M SUFFIX . . . FK PACKAGE
(TOP VIEW)
VCC
I
I/O
I/O
Q
Q
NC
Q
Q
I/O
VCC
I
I/O
Q
Q
Q
NC
Q
Q
Q
VCC
I
Q
Q
Q
Q
NC
Q
Q
Q
OE
I
Q
OE
I
I/O
OE
I
I/O
I
I
CLK
NC
I
I
I
NC
I
I
I
I
I
I
NC
I
I
I
I
I
I
NC
I
I
I
NC
POST OFFICE BOX 655303
4 3 2 1 28 27 26
25
5
24
6
23
7
22
8
9
21
10
20
11
19
12 13 14 15 16 17 18
I
I
GND
NC
TIBPAL20R6’
C SUFFIX . . . JT OR NT PACKAGE
M SUFFIX . . . JT PACKAGE
(TOP VIEW)
CLK
I
I
I
I
I
I
I
I
I
I
GND
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
VCC
I
I/O
Q
Q
Q
Q
Q
Q
I/O
I
OE
TIBPAL20R6’
C SUFFIX . . . FN PACKAGE
M SUFFIX . . . FK PACKAGE
(TOP VIEW)
I
I
CLK
NC
4 3 2 1 28 27 26
25
5
24
6
23
7
8
22
9
21
10
20
11
19
12 13 14 15 16 17 18
I
I
GND
NC
TIBPAL20R8’
C SUFFIX . . . JT OR NT PACKAGE
M SUFFIX . . . JT PACKAGE
(TOP VIEW)
CLK
I
I
I
I
I
I
I
I
I
I
GND
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
VCC
I
Q
Q
Q
Q
Q
Q
Q
Q
I
OE
TIBPAL20R8’
C SUFFIX . . . FN PACKAGE
M SUFFIX . . . FK PACKAGE
(TOP VIEW)
I
I
CLK
NC
4 3 2 1 28 27 26
25
5
24
6
7
23
8
22
21
9
20
10
11
19
12 13 14 15 16 17 18
I
I
GND
NC
Pin assignments in operating mode
–
No internal connection
2
•
DALLAS, TEXAS 75265
OBSOLETE - No Longer Available
TIBPAL20L8-5C, TIBPAL20R4-5C
TIBPAL20L8-7M, TIBPAL20R4-7M
HIGH-PERFORMANCE
IMPACT-X
™
PAL
®
CIRCUITS
functional block diagrams (positive logic)
TIBPAL20L8’
&
40 X 64
EN
≥
1
SRPS010F – D3353, OCTOBER 1989 – REVISED SEPTEMBER 1992
7
7
O
O
I/O
I/O
I/O
I/O
I/O
I/O
20 x
I
14
20
7
7
6
20
7
7
7
7
6
TIBPAL20R4’
OE
CLK
&
40 X 64
8
8
8
20
8
4
4
20
7
7
7
7
4
4
EN
≥
1
I/O
I/O
I/O
I/O
Q
≥
1
EN 2
C1
I=0 2
1D
Q
Q
Q
20 x
I
12
denotes fused inputs
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
3
OBSOLETE - No Longer Available
SRPS010F – D3353, OCTOBER 1989 – REVISED SEPTEMBER 1992
TIBPAL20R6-5C, TIBPAL20R8-5C
TIBPAL20R6-7M, TIBPAL20R8-7M
HIGH-PERFORMANCE
IMPACT-X
™
PAL
®
CIRCUITS
functional block diagrams (positive logic)
TIBPAL20R6’
OE
CLK
&
40 X 64
8
8
8
20
8
6
8
2
20
8
EN
≥
1
Q
Q
Q
≥
1
EN 2
C1
I=0 2
1D
Q
Q
Q
20 x
I
12
7
7
2
6
I/O
I/O
TIBPAL20R8’
OE
CLK
&
40 X 64
8
8
8
20
8
8
8
20
8
8
8
Q
Q
Q
Q
Q
≥
1
EN 2
C1
I=0 2
1D
Q
Q
Q
20 x
I
12
8
denotes fused inputs
4
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
