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SN74ACT244-Q1 数据表(PDF) 1 Page - Texas Instruments

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部件名 SN74ACT244-Q1
功能描述  OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS
Download  8 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

SN74ACT244-Q1 数据表(HTML) 1 Page - Texas Instruments

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SN74ACT244Q1
OCTAL BUFFER/DRIVER
WITH 3STATE OUTPUTS
SCAS766B − APRIL 2004 − REVISED JANUARY 2008
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Qualified for Automotive Applications
D 4.5-V to 5.5-V VCC Operation
D Inputs Accept Voltages to 5.5 V
D Max tpd of 9 ns at 5 V
D Inputs Are TTL Compatible
description/ordering information
This octal buffer/driver is designed specifically to
improve the performance and density of 3-state
memory
address
drivers,
clock
drivers,
and
bus-oriented receivers and transmitters.
The SN74ACT244 device is organized as two 4-bit
buffers/drivers with separate output-enable (OE)
inputs. When OE is low, the device passes
noninverted data from the A inputs to the Y outputs.
When
OE
is
high,
the
outputs
are
in
the
high-impedance state.
To ensure the high-impedance state during power up or power down, OE shall 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
TA
PACKAGE‡
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
−40
°C to 85°C
TSSOP − PW
Tape and reel
SN74ACT244IPWRQ1
ACT244I
† 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.
‡ Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
FUNCTION TABLE
(each buffer)
INPUTS
OUTPUT
OE
A
OUTPUT
Y
L
H
H
L
LL
H
X
Z
Copyright
 2008, Texas Instruments Incorporated
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.
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.
PW PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
VCC
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1


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