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SN74AHCT244QPWRQ1 Scheda tecnica(PDF) 1 Page - Texas Instruments

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Il numero della parte SN74AHCT244QPWRQ1
Spiegazioni elettronici  OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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SN74AHCT244QPWRQ1 Scheda tecnica(HTML) 1 Page - Texas Instruments

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SN74AHCT244Q1
OCTAL BUFFER/DRIVER
WITH 3STATE OUTPUTS
SCLS529C − AUGUST 2003 − REVISED APRIL 2008
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Qualified for Automotive Applications
D ESD Protection Exceeds 1000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
D EPIC (Enhanced-Performance Implanted
CMOS) Process
D Inputs Are TTL-Voltage Compatible
description/ordering information
This octal buffer/driver is designed specifically to
improve both the performance and density of 3-state
memory-address
drivers,
clock
drivers,
and
bus-oriented receivers and transmitters.
The SN74AHCT244 is organized as two 4-bit buffers/line drivers with separate output-enable (OE) inputs.
When OE is low, the device passes 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
SN74AHCT244IPWRQ1
AHCT244I
−40
°C to 125°C
SOIC − DW
Tape and reel
SN74AHCT244QDWRQ1
AHCT244Q
−40
°C to 125°C
TSSOP − PW
Tape and reel
SN74AHCT244QPWRQ1
AHCT244Q
† 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 http://www.ti.com.
‡ Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging.
FUNCTION TABLE
(each 4-bit buffer/driver)
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.
EPIC is a trademark of Texas Instruments.
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20
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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
DW OR PW PACKAGE
(TOP VIEW)


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