SN74AC245-EP Datasheet, PDF (1/10 Pages) Texas Instruments – OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS

D Controlled Baseline
− One Assembly/Test Site, One Fabrication
Site
D Enhanced Diminishing Manufacturing
Sources (DMS) Support
D Enhanced Product-Change Notification
D Qualification Pedigree^†
D 2-V to 6-V V_CC Operation
D Inputs Accept Voltages to 6 V
D Max t_pd of 7 ns at 5 V
† _{Component qualification in accordance with JEDEC and industry}
standards to ensure reliable operation over an extended
temperature range. This includes, but is not limited to, Highly
Accelerated Stress Test (HAST) or biased 85/85, temperature
cycle, autoclave or unbiased HAST, electromigration, bond
intermetallic life, and mold compound life. Such qualification
testing should not be viewed as justifying use of this component
beyond specified performance and environmental limits.
SN74AC245ĆEP
OCTAL BUS TRANSCEIVER
WITH 3ĆSTATE OUTPUTS
SCAS780 − OCTOBER 2004
DW PACKAGE
(TOP VIEW)
DIR 1
A1 2
A2 3
A3 4
A4 5
A5 6
A6 7
A7 ⁸
A8 ⁹
GND ¹⁰
20 V_CC
19 OE
18 B1
17 B2
16 B3
15 B4
14 B5
13 _B6
12 _B7
11 _B8
description/ordering information
The SN74AC245 octal bus transceiver is 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 V_CC 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
SOIC − DW
Tape and reel SN74AC245IDWREP SAC245IEP
‡ _{Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are}
available at www.ti.com/sc/package.
FUNCTION TABLE
INPUTS
OE DIR
OPERATION
L
L
B data to A bus
L
H
A data to B bus
H
X
Isolation
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 Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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Copyright  2004, Texas Instruments Incorporated
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