SN74HC244-EP Datasheet, PDF (1/14 Pages) Texas Instruments – OCTAL BUFFER AND LINE DRIVER WITH 3-STATE OUTPUTS

D Controlled Baseline
− One Assembly/Test Site, One Fabrication
Site
D Extended Temperature Performance of Up
To −55°C to 125°C
D Enhanced Diminishing Manufacturing
Sources (DMS) Support
D Enhanced Product-Change Notification
D Qualification Pedigree^†
D 3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
D High-Current Outputs Drive Up To 15
LSTTL Loads
† _{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.
SN74HC244ĆEP
OCTAL BUFFER AND LINE DRIVER
WITH 3ĆSTATE OUTPUTS
SCLS463A − JULY 2002 − REVISED JANUARY 2004
DW OR PW PACKAGE
(TOP VIEW)
1OE 1
1A1 2
2Y4 3
1A2 4
2Y3 5
1A3 6
2Y2 7
1A4 8
2Y1 9
GND ¹⁰
20 V_CC
19 2OE
18 1Y1
17 2A4
16 1Y2
15 2A3
14 1Y3
13 2A2
12 1Y4
11 _2A1
description/ordering information
This octal buffer and line 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 SN74HC244 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.
ORDERING INFORMATION
TA
PACKAGE‡
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
SOP − DW
−40°C to 125°C
TSSOP − PW
Tape and reel
Tape and reel
SN74HC244QDWREP
SN74HC244QPWREP
SHC244EP
SHC244EP
−55°C to 125°C SOP − DW
Tape and reel SN74HC244MDWREP
HC244MEP
‡ _{Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are}
available at www.ti.com/sc/package.
FUNCTION TABLE
(each buffer/driver)
INPUTS
OE
A
OUTPUT
Y
L
H
H
L
L
L
H
X
Z
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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright  2004, Texas Instruments Incorporated
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