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SN74AHCT244DBLE Datasheet

  • SN74AHCT244DBLE

  • OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS

  • 553.79KB

  • 17页

  • TI

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SN54AHCT244, SN74AHCT244
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCLS228L 鈥?OCTOBER 1995 鈥?REVISED JULY 2003
D
D
Inputs Are TTL-Voltage Compatible
Latch-Up Performance Exceeds 250 mA Per
JESD 17
SN54AHCT244 . . . J OR W PACKAGE
SN74AHCT244 . . . DB, DGV, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
description/ordering information
These octal buffers/drivers are designed
specifically to improve both the performance and
density of 3-state memory-address drivers, clock
drivers, and bus-oriented receivers and
transmitters.
The 鈥橝HCT244 devices are 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.
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
CC
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
SN54AHCT244 . . . FK PACKAGE
(TOP VIEW)
2Y4
1A1
1OE
V
CC
1A2
2Y3
1A3
2Y2
1A4
4
5
6
7
8
3 2 1 20 19
18
17
16
15
14
9 10 11 12 13
2OE
1Y1
2A4
1Y2
2A3
1Y3
ORDERING INFORMATION
TA
PDIP 鈥?N
SOIC 鈥?DW
鈥?0掳C to 85掳C
40掳C
SOP 鈥?NS
SSOP 鈥?DB
TSSOP 鈥?PW
TVSOP 鈥?DGV
CDIP 鈥?J
鈥?5掳C to 125掳C
CFP 鈥?W
LCCC 鈥?FK
PACKAGE鈥?/div>
Tube
Tube
Tape and reel
Tape and reel
Tape and reel
Tube
Tape and reel
Tape and reel
Tube
Tube
Tube
ORDERABLE
PART NUMBER
SN74AHCT244N
SN74AHCT244DW
SN74AHCT244DWR
SN74AHCT244NSR
SN74AHCT244DBR
SN74AHCT244PW
SN74AHCT244PWR
SN74AHCT244DGVR
SNJ54AHCT244J
SNJ54AHCT244W
SNJ54AHCT244FK
TOP-SIDE
MARKING
SN74AHCT244N
AHCT244
AHCT244
HB244
HB244
HB244
SNJ54AHCT244J
SNJ54AHCT244W
SNJ54AHCT244FK
鈥?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.
Copyright
铮?/div>
2003, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
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
鈥?/div>
DALLAS, TEXAS 75265
2Y1
GND
2A1
1Y4
2A2
1

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