SN54HC244, SN74HC244
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SCLS130D – DECEMBER 1982 – REVISED AUGUST 2003
Wide Operating Voltage Range of 2 V to 6 V
Low Power Consumption, 80-µA Max I
CC
High-Current Outputs Drive Up To
15 LSTTL Loads
Typical t = 11 ns
pd
6-mA Output Drive at 5 V
3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
Low Input Current of 1 µA Max
SN54HC244 . . . J OR W PACKAGE
SN74HC244 . . . DB, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
SN54HC244 . . . FK PACKAGE
(TOP VIEW)
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
1
2
3
4
5
6
7
8
9
20
V
CC
19 2OE
18 1Y1
17 2A4
16 1Y2
15 2A3
14 1Y3
13 2A2
12 1Y4
11 2A1
3
2
1
20 19
18
1Y1
2A4
1Y2
2A3
1Y3
1A2
2Y3
1A3
2Y2
1A4
4
5
6
7
8
17
16
15
14
9 10 11 12 13
GND 10
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
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
PACKAGE
T
A
PDIP – N
Tube of 20
Tube of 25
Reel of 2000
Reel of 2000
Reel of 2000
Tube of 70
Reel of 2000
Reel of 250
Tube of 20
Tube of 85
Tube of 55
SN74HC244N
SN74HC244N
SN74HC244DW
SN74HC244DWR
SN74HC244NSR
SN74HC244DBR
SN74HC244PW
SN74HC244PWR
SN74HC244PWT
SNJ54HC244J
SOIC – DW
HC244
SOP – NS
HC244
HC244
–40°C to 85°C
SSOP – DB
TSSOP – PW
HC244
CDIP – J
CFP – W
LCCC – FK
SNJ54HC244J
SNJ54HC244W
SNJ54HC244FK
–55°C to 125°C
SNJ54HC244W
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
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.
1
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