SN54HC244, SN74HC244
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SCLS130D – DECEMBER 1982 – REVISED AUGUST 2003
D
Wide Operating Voltage Range of 2 V to 6 V
High-Current Outputs Drive Up To
15 LSTTL Loads
3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
D
D
D
D
Low Power Consumption, 80-µA Max ICC
Typical tpd = 11 ns
±6-mA Output Drive at 5 V
Low Input Current of 1 µA Max
SN54HC244 . . . J OR W PACKAGE
SN74HC244 . . . DB, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
20
2
19
3
18
4
17
5
6
16
15
7
14
8
13
9
12
10
11
2Y4
1A1
1OE
VCC
1
VCC
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
1A2
2Y3
1A3
2Y2
1A4
4
3 2 1 20 19
18
5
17
6
16
7
15
8
14
9 10 11 12 13
1Y1
2A4
1Y2
2A3
1Y3
2Y1
GND
2A1
1Y4
2A2
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
SN54HC244 . . . FK PACKAGE
(TOP VIEW)
2OE
D
D
description/ordering information
These octal buffers and line 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 ’HC244
devices are 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
PACKAGE†
TA
PDIP – N
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
Tube of 20
SN74HC244N
Tube of 25
SN74HC244DW
Reel of 2000
SN74HC244DWR
SOP – NS
Reel of 2000
SN74HC244NSR
HC244
SSOP – DB
Reel of 2000
SN74HC244DBR
HC244
Tube of 70
SN74HC244PW
Reel of 2000
SN74HC244PWR
Reel of 250
SN74HC244PWT
CDIP – J
Tube of 20
SNJ54HC244J
SNJ54HC244J
CFP – W
Tube of 85
SNJ54HC244W
SNJ54HC244W
LCCC – FK
Tube of 55
SNJ54HC244FK
SOIC – DW
–40°C 85°C
–40 C to 85 C
TSSOP – PW
–55°C 125°C
–55 C to 125 C
SN74HC244N
HC244
HC244
SNJ54HC244FK
† 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 2003, Texas Instruments Incorporated
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.
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.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
