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TIBPAL20L8 PDF预览

TIBPAL20L8

更新时间： 2024-11-02 22:42:19
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德州仪器 - TI /
页数 文件大小 规格书
24页 288K
描述
HIGH-PERFORMANCE IMPACT-X PAL CIRCUITS

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TIBPAL20L8 数据手册

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TIBPAL20L8-10C, TIBPAL20R4-10C, TIBPAL20R6-10C, TIBPAL20R8-10C  
HIGH-PERFORMANCE IMPACT-X PAL CIRCUITS  
SRPS008A – D3336, OCTOBER 1989 – REVISED MARCH 1992  
TIBPAL20L8’  
JT OR NT PACKAGE  
•
High-Performance Operation:  
f
f
f
(no feedback)  
TIBPAL20R’ . . . 71.4 MHz  
(internal feedback)  
TIBPAL20R’ . . . 58.8 MHz  
(external feedback)  
TIBPAL20R’ . . . 55.5 MHz  
max  
(TOP VIEW)  
max  
I
I
I
I
I
I
I
I
V
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  
CC  
2
max  
3
4
Propagation Delay  
5
TIBPAL20’ . . . 10 ns Max  
6
•
•
•
Functionally Equivalent, but Faster Than  
Existing 24-Pin PLD Circuits  
7
8
I
I
I
9
Preload Capability on Output Registers  
Simplifies Testing  
10  
11  
12  
I
I
GND  
Power-Up Clear on Registered Devices (All  
Register Outputs are Set Low, but Voltage  
Levels at the Output Pins Go High)  
TIBPAL20L8’  
FN PACKAGE  
•
Package Options Include Plastic Chip  
Carriers in Addition to Plastic and Ceramic  
DIPs  
(TOP VIEW)  
•
•
Security Fuse Prevents Duplication  
4
5
3
2
1
28 27 26  
25  
Dependable Texas Instruments Quality and  
Reliability  
I
I
I
I/O  
I/O  
I/O  
6
24  
23  
7
I/O  
PORT  
S
I
3-STATE  
REGISTERED  
Q OUTPUTS  
DEVICE  
8
NC  
22 NC  
21 I/O  
20 I/O  
19 I/O  
INPUTS O OUTPUTS  
9
I
I
I
PAL20L8  
PAL20R4  
PAL20R6  
PAL20R8  
14  
12  
12  
12  
2
0
0
0
0
6
4
2
0
10  
11  
4 (3-state buffers)  
6 (3-state buffers)  
8 (3-state buffers)  
12 13 14 15 16 17 18  
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  
NC – No internal connection  
Pin assignments in operating mode  
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.  
Alloftheregisteroutputsaresettoalowlevelduringpowerup. Extracircuitryhasbeenprovidedtoallowloading  
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.  
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.  
PRODUCTION DATA information is current as of publication date.  
Copyright 1992, Texas Instruments Incorporated  
Products 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
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