SN74AHCT244Q Datasheet, PDF (1/13 Pages) Texas Instruments – OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS

D Q Devices Meet Automotive Performance
Requirements
D Customer-Specific Configuration Control
Can Be Supported Along with
Major-Change Approval
D EPIC (Enhanced-Performance Implanted
CMOS) Process
D Inputs Are TTL-Voltage Compatible
D Latch-Up Performance Exceeds 250 mA Per
JESD 17
description
SN74AHCT244Q
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SGDS024 – FEBRUARY 2002
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
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 SN74AHCT244Q 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
SOIC – D
–40°C to 125°C
TSSOP – PW
Tape and reel
Tape and reel
SN74AHCT244QDWR AHCT244Q
SN74AHCT244QPWR HB244Q
† _{Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines}
are available at www.ti.com/sc/package.
FUNCTION TABLE
(each 4-bit 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.
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  2002, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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