Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLogic ICsLogic IC - Buffer, driver SOIC 20

SN54HCT244, SN74HCT244

OCTAL BUFFERS AND LINE DRIVERS

WITH 3-STATE OUTPUTS

SCLS175D – MARCH 1984 – REVISED AUGUST 2003

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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

±6-mA Output Drive at 5 V

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

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.

ORDERING INFORMATION

PACKAGE

†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

–40 C to 85 C

PDIP – N Tube of 20 SN74HCT244N SN74HCT244N

–40 C to 85 C

SOIC – DW

Tube of 25 SN74HCT244DW

HCT244

–40 C to 85 C

SOIC – DW

Reel of 2000 SN74HCT244DWR

HCT244

–40°C to 85°C

SOP – NS Reel of 2000 SN74HCT244NSR HCT244

–40°C to 85°C

SSOP – DB Reel of 2000 SN74HCT244DBR HT244

TSSOP – PW

Tube of 70 SN74HCT244PW

HT244

TSSOP – PW

Reel of 2000 SN74HCT244PWR

HT244

Reel of 250 SN74HCT244PWT

–55 C to 125 C

CDIP – J Tube of 20 SNJ54HCT244J SNJ54HCT244J

–55

C to 125

CFP – W Tube of 85 SNJ54HCT244W SNJ54HCT244W

LCCC – FK Tube of 55 SNJ54HCT244FK SNJ54HCT244FK

†

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are

available at www.ti.com/sc/package.

1OE

1A1

2Y4

1A2

2Y3

1A3

2Y2

1A4

2Y1

GND

2OE

1Y1

2A4

1Y2

2A3

1Y3

2A2

1Y4

2A1

SN54HCT244 ...J OR W PACKAGE

SN74HCT244 . . . DB, DW, N, NS, OR PW PACKAGE

(TOP VIEW)

3212019

910111213

1Y1

2A4

1Y2

2A3

1Y3

1A2

2Y3

1A3

2Y2

1A4

SN54HCT244 . . . FK PACKAGE

(TOP VIEW)

2Y4

1A1

1OE

1Y4

2A2

2OE

2Y1

2A1

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
SN54HCT244, SN74HCT244 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SCLS175D – MARCH 1984 – REVISED AUGUST 2003 D D D D D D 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 ICC Typical tpd = 13 ns ±6-mA Output Drive at 5 V Low Input Current of 1 µA Max Inputs Are TTL-Voltage Compatible 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers SN54HCT244 . . . J OR W PACKAGE SN74HCT244 . . .
PAGE 2
SN54HCT244, SN74HCT244 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SCLS175D – MARCH 1984 – 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
SN54HCT244, SN74HCT244 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SCLS175D – MARCH 1984 – REVISED AUGUST 2003 recommended operating conditions (see Note 3) SN54HCT244 NOM MAX MIN NOM MAX 4.5 5 5.5 4.5 5 5.5 VCC VIH Supply voltage VIL VI Low-level input voltage Input voltage 0 VO ∆t/∆v Output voltage 0 High-level input voltage VCC = 4.5 V to 5.5 V VCC = 4.5 V to 5.5 V SN74HCT244 MIN 2 2 Input transition rise/fall time V V 0.8 VCC VCC UNIT 0 0 500 0.
PAGE 4
SN54HCT244, SN74HCT244 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SCLS175D – MARCH 1984 – REVISED AUGUST 2003 switching characteristics over recommended operating free-air temperature range, CL = 150 pF (unless otherwise noted) (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) tpd A Y ten OE Y tt Y VCC MIN TA = 25°C TYP MAX SN54HCT244 MIN MAX SN74HCT244 MIN MAX 4.5 V 21 45 68 56 5.5 V 18 40 61 51 4.5 V 25 52 79 65 5.5 V 22 47 71 59 4.5 V 17 42 63 53 5.
PAGE 5
SN54HCT244, SN74HCT244 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SCLS175D – MARCH 1984 – REVISED AUGUST 2003 PARAMETER MEASUREMENT INFORMATION VCC From Output Under Test CL (see Note A) PARAMETER S1 Test Point tPZH ten RL S2 1 kΩ tPZL tPHZ tdis –– LOAD CIRCUIT 2.7 V 2.7 V S1 S2 50 pF or 150 pF Open Closed Closed Open 1 kΩ tPLZ tpd or tt Input 1.3 V 0.3 V CL RL 50 pF 50 pF or 150 pF Open Closed Closed Open Open Open 3V 1.3 V 0.
PAGE 6
PACKAGE OPTION ADDENDUM www.ti.
PAGE 7
PACKAGE OPTION ADDENDUM www.ti.
PAGE 8
PACKAGE OPTION ADDENDUM www.ti.com Orderable Device 18-Oct-2013 Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish MSL Peak Temp (2) (6) (3) TBD A42 N / A for Pkg Type Op Temp (°C) Device Marking (4/5) 244FK SNJ54HCT244J ACTIVE CDIP J 20 1 -55 to 125 8513001RA SNJ54HCT244J (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs.
PAGE 9
PACKAGE OPTION ADDENDUM www.ti.
PAGE 10
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 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 SN74HCT244DBR SSOP DB 20 2000 330.0 16.4 8.2 7.5 2.5 12.0 16.0 Q1 SN74HCT244DWR SOIC DW 20 2000 330.0 24.4 10.8 13.0 2.7 12.0 24.0 Q1 SN74HCT244NSR SO NS 20 2000 330.0 24.4 8.2 13.0 2.5 12.0 24.
PAGE 11
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN74HCT244DBR SN74HCT244DWR SSOP DB 20 2000 367.0 367.0 38.0 SOIC DW 20 2000 367.0 367.0 45.0 SN74HCT244NSR SO NS 20 2000 367.0 367.0 45.0 SN74HCT244PWR TSSOP PW 20 2000 367.0 367.0 38.0 SN74HCT244PWR TSSOP PW 20 2000 364.0 364.0 27.0 SN74HCT244PWRG4 TSSOP PW 20 2000 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.