1OE

1

1A1

2

18

1Y1

1A2

4

16

1Y1

1A3

6

14

1Y1

1A4

8

12

1Y4

2OE

19

2A1

11

9

1Y1

2A2

13

7

1Y1

2A3

15

5

1Y1

2A4

17

3

1Y4

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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.

SN54HC244, SN74HC244

SCLS130E – DECEMBER 1982 – REVISED MAY 2016

SNx4HC244 Octal Buffers and Line Drivers With 3-State Outputs

1

1 Features

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

•

•

•

±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.

2 Applications

•

Servers

•

LED Displays

•

Network Switches

•

Telecom Infrastructure

•

Motor Drivers

•

I/O Expanders

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 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.

Device Information(1)

PART NUMBER

PACKAGE (PINS)

BODY SIZE (NOM)

SN54HC244

CDIP (20)

6.92 mm × 24.38 mm

CFP (20)

6.92 mm × 13.72 mm

LCCC (20)

8.89 mm × 8.89 mm

SN74HC244DB

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

TSSOP (20)

4.40 mm × 6.50 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Logic Diagram (Positive Logic)