SN74AHC244-EP_13 Datasheet, PDF (1/11 Pages) Texas Instruments – OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS

D Controlled Baseline
– One Assembly/Test Site, One Fabrication
Site
D Extended Temperature Performance of
–55°C to 125°C
D Enhanced Diminishing Manufacturing
Sources (DMS) Support
D Enhanced Product-Change Notification
D Qualification Pedigree^†
D EPIC (Enhanced-Performance Implanted
CMOS) Process
D Operating Range 2-V to 5.5-V V_CC
D Latch-Up Performance Exceeds 250 mA Per
JESD 17
D ESD Protection Exceeds 1500 V Per
MIL-STD-833, Method 3015; Exceeds 150 V
Using Machine Model (C = 200 pF, R = 0)
† _{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.
SN74AHC244-EP
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCLS486A – MAY 2003 – REVISED JUNE 2003
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/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 SN74AHC244 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 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
–55°C to 125°C
SOIC – D
Tape and reel
TSSOP – PW Tape and reel
SN74AHC244MDWREP
SN74AHC244MPWREP
AHC244MEP
AHC244EP
‡ _{Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines}
are available at www.ti.com/sc/package.
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.
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.
Copyright  2003, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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