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SN54AHCT574W PDF预览

SN54AHCT574W

更新时间： 2024-11-27 23:06:07
品牌 Logo 应用领域
德州仪器 - TI 触发器输出元件
页数 文件大小 规格书
6页 89K
描述
OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH 3-STATE OUTPUTS

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SN54AHCT574W 数据手册

 浏览型号SN54AHCT574W的Datasheet PDF文件第2页浏览型号SN54AHCT574W的Datasheet PDF文件第3页浏览型号SN54AHCT574W的Datasheet PDF文件第4页浏览型号SN54AHCT574W的Datasheet PDF文件第5页浏览型号SN54AHCT574W的Datasheet PDF文件第6页 
SN54AHCT574, SN74AHCT574  
OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS  
WITH 3-STATE OUTPUTS  
SCLS245J – OCTOBER 1995 – REVISED JANUARY 2000  
SN54AHCT574 . . . J OR W PACKAGE  
SN74AHCT574 . . . DB, DGV, DW, N, OR PW PACKAGE  
(TOP VIEW)  
EPIC (Enhanced-Performance Implanted  
CMOS) Process  
Inputs Are TTL-Voltage Compatible  
OE  
1D  
2D  
3D  
4D  
5D  
6D  
7D  
8D  
V
CC  
Latch-Up Performance Exceeds 250 mA Per  
JESD 17  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
17  
16  
15  
14  
1Q  
2Q  
3Q  
4Q  
5Q  
6Q  
ESD Protection Exceeds 2000 V Per  
MIL-STD-883, Method 3015; Exceeds 200 V  
Using Machine Model (C = 200 pF, R = 0)  
Package Options Include Plastic  
Small-Outline (DW), Shrink Small-Outline  
(DB), Thin Very Small-Outline (DGV), Thin  
Shrink Small-Outline (PW), and Ceramic  
Flat (W) Packages, Ceramic Chip Carriers  
(FK), and Standard Plastic (N) and Ceramic  
(J) DIPs  
13 7Q  
12 8Q  
11  
GND  
CLK  
SN54AHCT574 . . . FK PACKAGE  
(TOP VIEW)  
description  
The ’AHCT574 devices are octal edge-triggered  
D-type flip-flops that feature 3-state outputs  
designed specifically for driving highly capacitive  
or relatively low-impedance loads. These devices  
are particularly suitable for implementing buffer  
registers, I/O ports, bidirectional bus drivers, and  
working registers.  
3
2
1 20 19  
18  
2Q  
3Q  
4Q  
5Q  
6Q  
3D  
4D  
5D  
6D  
7D  
4
5
6
7
8
17  
16  
15  
14  
9 10 11 12 13  
On the positive transition of the clock (CLK) input,  
the Q outputs are set to the logic levels of the data  
(D) inputs.  
A buffered output-enable (OE) input places the eight outputs in either a normal logic state (high or low) or the  
high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly.  
The high-impedance state and the increased drive provide the capability to drive bus lines without interface or  
pullup components.  
OE does not affect internal operations of the flip-flop. Old data can be retained or new data can be entered while  
the outputs are in the high-impedance state.  
To ensure the high-impedance state during power up or power down, OE should be tied to V through a pullup  
CC  
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.  
The SN54AHCT574 is characterized for operation over the full military temperature range of –55°C to 125°C.  
The SN74AHCT574 is characterized for operation from –40°C to 85°C.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
EPIC is a trademark of Texas Instruments Incorporated.  
Copyright 2000, Texas Instruments Incorporated  
On products compliant to MIL-PRF-38535, all parameters are tested  
unless otherwise noted. On all other products, production  
processing does not necessarily include testing of all parameters.  
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.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
123456

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