TI-TIBPAL20L8-15C.pdf
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TIBPAL20L8-15C, TIBPAL20R4-15C, TIBPAL20R6-15C, TIBPAL20R8-15C
TIBPAL20L8-20M, TIBPAL20R4-20M, TIBPAL20R6-20M, TIBPAL20R8-20M
HIGH-PERFORMANCE IMPACT PAL
CIRCUITS
SRPS021 – D2920, JUNE 1986 – REVISED AUGUST 1989
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Copyright 1989, Texas Instruments Incorporated
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.
• High-Performance: f
max
(w/o feedback)
TIBPAL20R’ -15C Series . . . 45 MHz
TIBPAL20R’ -20M Series . . . 41.6 MHz
• High-Performance . . . 45 MHz Min
• Reduced I
CC
of 180 mA Max
• Functionally Equivalent, but Faster Than
PAL20L8, PAL20R4, PAL20R6, PAL20R8
• Power-Up Clear on Registered Devices (All
Register Outputs are Set Low, but Voltage
Levels at the Output Pins Go High)
• Preload Capability on Output Registers
Simplifies Testing
• Package Options Include Both Plastic and
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.
These devices are covered by U.S. Patent 4,410,987.
IMPACT is a trademark of Texas Instruments Incorporated.
PAL is a registered trademark of Advanced Micro Devices Inc.
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24
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14
13
I
I
I
I
I
I
I
I
I
I
I
GND
V
CC
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)
3212827
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
I
I
GND
NC
I
I
O
I
I
I
NC
I
O
TIBPAL20L8’
C SUFFIX . . . FN PACKAGE
M SUFFIX . . . FK PACKAGE
(TOP VIEW)
NC
– No internal connection
Pin assignments in operating mode
V
CC
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