SN54HCT244, SN74HCT244
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SCLS175D – MARCH 1984 – REVISED AUGUST 2003
SN54HCT244 . . . J OR W PACKAGE
SN74HCT244 . . . DB, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
Operating Voltage Range of 4.5 V to 5.5 V
High-Current Outputs Drive Up To 15
LSTTL Loads
Low Power Consumption, 80-µA Max I
Typical t = 13 ns
pd
6-mA Output Drive at 5 V
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
1
2
3
4
5
6
7
8
9
20
V
CC
CC
19 2OE
18 1Y1
17 2A4
16 1Y2
15 2A3
14 1Y3
13 2A2
12 1Y4
11 2A1
Low Input Current of 1 µA Max
Inputs Are TTL-Voltage Compatible
3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
description/ordering information
GND 10
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 ’HCT244 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.
SN54HCT244 . . . FK PACKAGE
(TOP VIEW)
3
2
1
20 19
18
1A2
2Y3
1A3
2Y2
1A4
1Y1
2A4
1Y2
2A3
4
5
6
7
8
17
16
15
14 1Y3
9 10 11 12 13
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
SN74HCT244N
SN74HCT244N
SN74HCT244DW
SN74HCT244DWR
SN74HCT244NSR
SN74HCT244DBR
SN74HCT244PW
SN74HCT244PWR
SN74HCT244PWT
SNJ54HCT244J
SOIC – DW
HCT244
SOP – NS
HCT244
HT244
–40°C to 85°C
SSOP – DB
TSSOP – PW
HT244
CDIP – J
CFP – W
LCCC – FK
SNJ54HCT244J
SNJ54HCT244W
SNJ54HCT244FK
–55°C to 125°C
SNJ54HCT244W
SNJ54HCT244FK
†
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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