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SN74AC245DWE4 数据表(PDF) 1 Page - Texas Instruments

部件名 SN74AC245DWE4
功能描述  OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
Download  19 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

SN74AC245DWE4 数据表(HTML) 1 Page - Texas Instruments

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SN54AC245, SN74AC245
OCTAL BUS TRANSCEIVERS
WITH 3STATE OUTPUTS
SCAS461F − FEBRUARY 1995 − REVISED OCTOBER 2003
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D 2-V to 6-V VCC Operation
D Inputs Accept Voltages to 6 V
D Max tpd of 7 ns at 5 V
description/ordering information
The ’AC245 octal bus transceivers are designed
for
asynchronous
two-way
communication
between
data
buses.
The
control-function
implementation
minimizes
external
timing
requirements.
When the output-enable (OE) is low, the device
passes noninverted data from the A bus to the B
bus or from the B bus to the A bus, depending on
the logic level at the direction control (DIR) input.
A high on OE disables the device so that the buses
are effectively isolated.
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
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP − N
Tube
SN74AC245N
SN74AC245N
SOIC − DW
Tube
SN74AC245DW
AC245
SOIC − DW
Tape and reel
SN74AC245DWR
AC245
−40
°C to 85°C
SOP − NS
Tape and reel
SN74AC245NSR
AC245
−40 C to 85 C
SSOP − DB
Tape and reel
SN74AC245DBR
AC245
TSSOP − PW
Tube
SN74AC245PW
AC245
TSSOP − PW
Tape and reel
SN74AC245PWR
AC245
CDIP − J
Tube
SNJ54AC245J
SNJ54AC245J
−55
°C to 125°C
CFP − W
Tube
SNJ54AC245W
SNJ54AC245W
−55 C to 125 C
LCCC − FK
Tube
SNJ54AC245FK
SNJ54AC245FK
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Copyright
 2003, 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.
SN54AC245 ...J OR W PACKAGE
SN74AC245 . . . DB, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
3
2
1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
B1
B2
B3
B4
B5
A3
A4
A5
A6
A7
SN54AC245...FK PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
VCC
OE
B1
B2
B3
B4
B5
B6
B7
B8
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.
On products compliant to MILPRF38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.


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