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TIBPAL20R4-25C PDF预览

TIBPAL20R4-25C

更新时间： 2024-11-02 22:08:11
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
17页 185K
描述
LOW-POWER HIGH-PERFORMANCE IMPACT PAL CIRCUITS

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TIBPAL20R4-25C 数据手册

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TIBPAL20L8-25C, TIBPAL20R4-25C, TIBPAL20R6-25C, TIBPAL20R8-25C  
LOW-POWER HIGH-PERFORMANCE IMPACT PAL CIRCUITS  
SRPS022 – D2920, MAY 1987 – REVISED MARCH 1992  
TIBPAL20L8’  
JT OR NT PACKAGE  
•
•
Low-Power, High-Performance  
Reduced I of 105 mA Max  
CC  
(TOP VIEW)  
f
:
max  
Without Feedback . . . 33 MHz Min  
With Feedback . . . 25 MHz Min  
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
t
. . . 25 ns Max  
pd  
3
Direct Replacement for PAL20L8A,  
PAL20R4A, PAL20R6A, PAL20L8A, with at  
Least 50% Reduction in Power  
4
5
6
7
•
•
Preload Capability on Output Registers  
Simplifies Testing  
8
I
I
I
9
10  
11  
12  
Power-Up Clear on Registered Devices (All  
Register Outputs are Set Low, but Voltage  
Levels at the Output Pins Go High)  
I
I
GND  
•
•
Package Options Include Plastic Chip  
Carriers in Addition to Plastic and Ceramic  
DIPs  
TIBPAL20L8’  
FN PACKAGE  
(TOP VIEW)  
Dependable Texas Instruments Quality and  
Reliability  
I/O  
PORT  
S
I
3-STATE  
REGISTERED  
Q OUTPUTS  
4
5
3
2
1
28 27 26  
25  
DEVICE  
INPUTS O OUTPUTS  
I
I
I
I/O  
I/O  
I/O  
PAL20L8  
PAL20R4  
PAL20R6  
PAL20R8  
14  
12  
12  
12  
2
0
0
0
0
6
4
2
0
6
24  
23  
4 (3-state buffers)  
6 (3-state buffers)  
8 (3-state buffers)  
7
8
NC  
22 NC  
21 I/O  
20 I/O  
19 I/O  
9
I
I
I
10  
11  
description  
12 13 14 15 16 17 18  
These programmable array logic devices feature  
high speed and functional equivalency when  
compared with currently available devices. These  
IMPACT  
circuits  
combine  
the  
latest  
NC – No internal connection  
Pin assignments in operating mode  
AdvancedLow-Power Schottky technology with  
proventitanium-tungstenfusestoprovidereliable,  
high-performance substitutes for conventional  
TTL logic. Their easy programmability allows forquick 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.  
Alloftheregisteroutputsaresettoalowlevelduringpower-up. 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 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 1992, 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
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