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SN54HC244, SN74HC244
SCLS130E – DECEMBER 1982 – REVISED MAY 2016
SNx4HC244 Octal Buffers and Line Drivers With 3-State Outputs
1 Features
3 Description
•
•
The SNx4HC244 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 SNx4HC244 devices are organized
as two 4-bit buffers and drivers with separate outputenable (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.
1
•
•
•
•
•
•
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
Low Power Consumption: ICC, 80-µA (Maximum)
Typical tpd = 11 ns
±6-mA Output Drive at 5 V
Low Input Current of 1 µA (Maximum)
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.
Device Information(1)
PART NUMBER
PACKAGE (PINS)
BODY SIZE (NOM)
•
•
•
•
•
•
CFP (20)
6.92 mm × 13.72 mm
LCCC (20)
8.89 mm × 8.89 mm
SSOP (20)
5.30 mm × 7.25 mm
SN74HC244DW
SOIC (20)
7.50 mm × 12.80 mm
SN74HC244N
PDIP (20)
6.30 mm × 25.40 mm
SN74HC244NS
SOP (20)
5.30 mm × 12.60 mm
SN74HC244PW
Servers
LED Displays
Network Switches
Telecom Infrastructure
Motor Drivers
I/O Expanders
6.92 mm × 24.38 mm
SN74HC244DB
2 Applications
CDIP (20)
TSSOP (20)
4.40 mm × 6.50 mm
SN54HC244
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Logic Diagram (Positive Logic)
2OE 19
1OE 1
11
2
18 1Y1
1A2
4
16 1Y1
2A2
1A3
6
14 1Y1
2A3
1A4
8
12 1Y4
2A4
9 1Y1
13
7 1Y1
15
5 1Y1
17
3 1Y4
2A1
1A1
Copyright © 2016, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
