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SN74AHC573-Q1

更新时间： 2024-11-06 11:58:43
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德州仪器 - TI 锁存器输出元件
页数 文件大小 规格书
10页 194K
描述
OCTAL TRANSPARENT D-TYPE LATCH WITH 3-STATE OUTPUTS

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SN74AHC573-Q1 数据手册

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SN74AHC573-Q1  
www.ti.com.................................................................................................................................................. SCLS697A–DECEMBER 2005–REVISED APRIL 2008  
OCTAL TRANSPARENT D-TYPE LATCH  
WITH 3-STATE OUTPUTS  
1
FEATURES  
PW PACKAGE  
(TOP VIEW)  
•
•
•
Qualified for Automotive Applications  
Operating Range 2-V to 5.5-V VCC  
OE  
1D  
2D  
3D  
4D  
5D  
6D  
7D  
8D  
VCC  
1Q  
1
2
3
4
5
6
7
8
9
20  
19  
3-State Outputs Directly Drive Bus Lines  
18 2Q  
3Q  
4Q  
5Q  
6Q  
17  
16  
15  
14  
13 7Q  
12 8Q  
11 LE  
GND 10  
DESCRIPTION  
The SN74AHC573 is an octal transparent D-type latch designed for 2-V to 5.5-V VCC operation.  
When the latch-enable (LE) input is high, the Q outputs follow the data (D) inputs. When LE is low, the Q outputs  
are latched at the logic levels of the D inputs.  
A buffered output-enable (OE) input can be used to place 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 increased drive provide the capability to drive bus lines without  
interface or pullup components.  
OE does not affect the internal operations of the latches. 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 VCC through a pullup  
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.  
ORDERING INFORMATION(1)  
TA  
PACKAGE(2)  
ORDERABLE PART NUMBER  
TOP-SIDE MARKING  
HA573Q  
–40°C to 125°C  
TSSOP – PW  
Reel of 2000  
SN74AHC573QPWRQ1  
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI  
web site at www.ti.com.  
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.  
FUNCTION TABLE  
(EACH LATCH)  
INPUTS  
OUTPUT  
Q
OE  
L
LE  
H
H
L
D
H
L
H
L
L
L
X
X
Q0  
Z
H
X
1
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.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2005–2008, Texas Instruments Incorporated  
1234567...10

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SN74AHC573-Q1 替代型号

型号 品牌 替代类型 描述 数据表
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