Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLogic ICsLogic IC - Buffer, driver SOIC 20

SN54HC244, SN74HC244

OCTAL BUFFERS AND LINE DRIVERS

WITH 3-STATE OUTPUTS

SCLS130D – DECEMBER 1982 – REVISED AUGUST 2003

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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, 80-µA Max I

Typical t

= 11 ns

±6-mA Output Drive at 5 V

Low Input Current of 1 µA Max

1OE

1A1

2Y4

1A2

2Y3

1A3

2Y2

1A4

2Y1

GND

2OE

1Y1

2A4

1Y2

2A3

1Y3

2A2

1Y4

2A1

SN54HC244 ...J OR W PACKAGE

SN74HC244 . . . DB, DW, N, NS, OR PW PACKAGE

(TOP VIEW)

3212019

910111213

1Y1

2A4

1Y2

2A3

1Y3

1A2

2Y3

1A3

2Y2

1A4

SN54HC244 . . . FK PACKAGE

(TOP VIEW)

2Y4

1A1

1OE

1Y4

2A2 2OE

2Y1

GND

2A1

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

†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

–40 C to 85 C

PDIP – N Tube of 20 SN74HC244N SN74HC244N

–40 C to 85 C

SOIC – DW

Tube of 25 SN74HC244DW

HC244

–40 C to 85 C

SOIC – DW

Reel of 2000 SN74HC244DWR

HC244

–40

C to 85

SOP – NS Reel of 2000 SN74HC244NSR HC244

–40°C to 85°C

SSOP – DB Reel of 2000 SN74HC244DBR HC244

TSSOP – PW

Tube of 70 SN74HC244PW

HC244

TSSOP – PW

Reel of 2000 SN74HC244PWR

HC244

Reel of 250 SN74HC244PWT

–55 C to 125 C

CDIP – J Tube of 20 SNJ54HC244J SNJ54HC244J

–55

C to 125

CFP – W Tube of 85 SNJ54HC244W SNJ54HC244W

LCCC – FK Tube of 55 SNJ54HC244FK 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.

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.

Summary of content (22 pages)

PAGE 1
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 . . .
PAGE 2
SN54HC244, SN74HC244 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SCLS130D – DECEMBER 1982 – REVISED AUGUST 2003 FUNCTION TABLE (each buffer/driver) INPUTS OE A OUTPUT Y L H H L L L H X Z logic diagram (positive logic) 1OE 1A1 1A2 1A3 1A4 1 2OE 2 18 4 16 6 14 8 12 1Y1 2A1 1Y2 2A2 1Y3 2A3 1Y4 2A4 19 11 9 13 7 15 5 17 3 2Y1 2Y2 2Y3 2Y4 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC .
PAGE 3
SN54HC244, SN74HC244 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SCLS130D – DECEMBER 1982 – REVISED AUGUST 2003 recommended operating conditions (see Note 3) SN54HC244 VCC VIH Supply voltage VCC = 2 V VCC = 4.5 V High-level input voltage VCC = 6 V VCC = 2 V VIL VI VO ∆t/∆v t/ v Low-level input voltage NOM MAX 2 5 6 MAX 2 5 6 3.15 3.15 4.2 4.2 0 UNIT V V 0.5 0.5 1.35 1.35 1.8 1.8 VCC VCC VCC = 2 V VCC = 4.5 V Input transition rise/fall time NOM 1.
PAGE 4
SN54HC244, SN74HC244 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SCLS130D – DECEMBER 1982 – REVISED AUGUST 2003 switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1) TA = 25°C TYP MAX SN54HC244 SN74HC244 PARAMETER FROM (INPUT) TO (OUTPUT) VCC 2V 40 115 170 145 tpd A Y 4.5 V 13 23 34 29 6V 11 20 29 25 ten OE tdis OE tt Y Y Y MIN MIN MAX MIN MAX 2V 75 150 225 190 4.
PAGE 5
SN54HC244, SN74HC244 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SCLS130D – DECEMBER 1982 – REVISED AUGUST 2003 PARAMETER MEASUREMENT INFORMATION VCC PARAMETER Test Point From Output Under Test tPZH S1 ten RL CL (see Note A) 1 kΩ tPZL tPHZ tdis S2 RL tPLZ tpd or tt 1 kΩ –– LOAD CIRCUIT CL S1 S2 50 pF or 150 pF Open Closed Closed Open Open Closed Closed Open Open Open 50 pF 50 pF or 150 pF VCC Input 50% 50% 0V tPLH In-Phase Output 50% 10% tPHL 90% VOH 50% 10% V O
PAGE 6
PACKAGE OPTION ADDENDUM www.ti.
PAGE 7
PACKAGE OPTION ADDENDUM www.ti.
PAGE 8
PACKAGE OPTION ADDENDUM www.ti.
PAGE 9
PACKAGE OPTION ADDENDUM www.ti.com 18-Oct-2013 (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line.
PAGE 10
PACKAGE MATERIALS INFORMATION www.ti.com 20-Dec-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant SN74HC244DBR SSOP DB 20 2000 330.0 16.4 8.2 7.5 2.5 12.0 16.0 Q1 SN74HC244DWR SOIC DW 20 2000 330.0 24.4 10.8 13.3 2.7 12.0 24.0 Q1 SN74HC244DWRG4 SOIC DW 20 2000 330.0 24.4 10.8 13.3 2.7 12.0 24.
PAGE 11
PACKAGE MATERIALS INFORMATION www.ti.com 20-Dec-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN74HC244DBR SSOP DB 20 2000 367.0 367.0 38.0 SN74HC244DWR SOIC DW 20 2000 600.0 144.0 84.0 SN74HC244DWRG4 SOIC DW 20 2000 367.0 367.0 45.0 SN74HC244NSR SO NS 20 2000 367.0 367.0 45.0 SN74HC244PWR TSSOP PW 20 2000 367.0 367.0 38.0 SN74HC244PWT TSSOP PW 20 250 367.0 367.0 38.
PAGE 12
PAGE 13
PAGE 14
PAGE 15
PAGE 16
PAGE 17
PAGE 18
PAGE 19
PAGE 20
PAGE 21
MECHANICAL DATA MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001 DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE 28 PINS SHOWN 0,38 0,22 0,65 28 0,15 M 15 0,25 0,09 8,20 7,40 5,60 5,00 Gage Plane 1 14 0,25 A 0°–ā8° 0,95 0,55 Seating Plane 2,00 MAX 0,10 0,05 MIN PINS ** 14 16 20 24 28 30 38 A MAX 6,50 6,50 7,50 8,50 10,50 10,50 12,90 A MIN 5,90 5,90 6,90 7,90 9,90 9,90 12,30 DIM 4040065 /E 12/01 NOTES: A. B. C. D. All linear dimensions are in millimeters.
PAGE 22
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.