Datasheet


    
  
SCLS543A − SEPTEMBER 2002 − REVISED APRIL 2008
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251−1443
D Qualified for Automotive Applications
D ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
D Wide Operating Voltage Range of 2 V to 6 V
D High-Current Outputs Drive Up To 15
LSTTL Loads
D 3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
D Low Power Consumption, 80-µA Max I
CC
D Typical t
pd
= 11 ns
D ±6-mA Output Drive at 5 V
D Low Input Current of 1 µA Max
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
{
T
A
PACKAGE
‡
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
−40°C to 125°C
SOIC − DW Reel of 2000 SN74HC244QDWRQ1 HC244Q
−40°C to 125°C
TSSOP − PW Reel of 2000 SN74HC244QPWRQ1 HC244Q
†
For the most current package and ordering information, see the Package Option Addendum at the end of this
document, or see the TI web site at http://www.ti.com.
‡
Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging.
FUNCTION TABLE
(each buffer/driver)
INPUTS
OUTPUT
OE A
OUTPUT
Y
L H H
L LL
H X Z
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications o
f
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
V
CC
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
DW OR PW PACKAGE
(TOP VIEW)
Copyright  2008, Texas Instruments Incorporated
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