OBSOLETE - No Longer Available
TIBPAL20L8-7C, TIBPAL20R4-7C, TIBPAL20R6-7C, TIBPAL20R8-7C
TIBPAL20L8-10M, TIBPAL20R4-10M, TIBPAL20R6-10M, TIBPAL20R8-10M
HIGH-PERFORMANCE IMPACT-Xꢀ™ PAL® CIRCUITS
SRPS005E − D3307, OCTOBER 1989 − REVISED DECEMBER 2010
TIBPAL20L8’
C SUFFIX . . . JT OR NT PACKAGE
M SUFFIX . . . JT PACKAGE
• High-Performance Operation:
f
f
f
(no feedback)
max
TIBPAL20R’ -7C Series . . . 100 MHz
TIBPAL20R’ -10M Series . . . 62.5 MHz
(TOP VIEW)
(internal feedback)
max
I
I
I
I
I
I
I
I
VCC
I
O
I/O
I/O
I/O
I/O
I/O
I/O
O
1
24
23
22
21
20
19
18
17
16
15
14
13
TIBPAL20R’ -7C Series . . . 100 MHz
TIBPAL20R’ -10M Series . . . 62.5 MHz
2
3
(external feedback)
max
4
TIBPAL20R’ -7C Series . . . 74 MHz
TIBPAL20R’ -10M Series . . . 50 MHz
Propagation Delay
5
6
7
TIBPAL20L8-7C Series . . . 7 ns Max
TIBPAL20L8-10M Series . . . 10 ns Max
8
I
I
I
9
10
11
12
• Functionally Equivalent, but Faster Than
I
I
Existing 24-Pin PLD Circuits
GND
• Preload Capability on Output Registers
Simplifies Testing
TIBPAL20L8’
• Power-Up Clear on Registered Devices (All
Register Outputs are Set Low, but Voltage
Levels at the Output Pins Go High)
C SUFFIX . . . FN PACKAGE
M SUFFIX . . . FK PACKAGE
(TOP VIEW)
• Package Options Include Both Plastic and
Ceramic Chip Carriers in Addition to Plastic
and Ceramic DIPs
4
3
2
1
28 27 26
25
5
6
7
8
9
I
I
I
I/O
I/O
I/O
• Security Fuse Prevents Duplication
24
23
• Dependable Texas Instruments Quality and
Reliability
NC
22 NC
21 I/O
20 I/O
19 I/O
I
I
I
I/O
PORT
S
I
3-STATE
REGISTERED
Q OUTPUTS
10
11
DEVICE
INPUTS O OUTPUTS
PAL20L8
PAL20R4
PAL20R6
PAL20R8
14
12
12
12
2
0
0
0
0
6
4
2
0
12 13 14 15 16 17 18
4 (3-state buffers)
6 (3-state buffers)
8 (3-state buffers)
NC − No internal connection
Pin assignments in operating mode
description
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. In addition, chip carriers are available for futher reduction in board
space.
All of the register outputs are set to a low level during power-up. 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-X is a trademark of Texas Instruments Incorporated.
PAL is a registered trademark of Advanced Micro Devices Inc.
PRODUCTION DATA information is current as of publication date. Products
Copyright © 2010, Texas Instruments Incorporated
conform to specifications per the terms of Texas Instruments standard
warranty. Production processing does not necessarily include testing of all
parameters.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
1