TEXAS INSTRUMENTS SN54F244, SN74F244 Technical data

SN54F244, SN74F244

OCTAL BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SDFS063A – D2932, MARCH 1987 – REVISED OCT OBER 1993

• 3-State Outputs Drive Bus Lines or Buffer

Memory Address Registers

• Package Options Include Plastic

Small-Outline (SOIC) and Shrink Small-Outline (SSOP) Packages, Ceramic Chip Carriers, and Plastic and Ceramic DIPs

description

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. Taken together with the ′F240 and ′F241, these devices provide the choice of selected combinations of inverting and noninverting outputs, symmetrical OE output-enable) inputs, and complementary OE and OE

The ′F244 is organized as two 4-bit buffers/line drivers with separate output enable (OE When OE A inputs to the Y outputs. When OE outputs are in the high-impedance state.

The SN74F244 is available in TI’s shrink small-outline package (DB), which provides the same I/O pin count and functionality of standard small-outline packages in less than half the printed-circuit-board area.

inputs.

is low, the device passes data from the

(active-low

) inputs.

is high, the

SN54F244 ...J PACKAGE

SN74F244 . . . DB, DW, OR N PACKAGE

1A2 2Y3 1A3 2Y2 1A4

(TOP VIEW)

1OE

1

1A1

2

2Y4

3

1A2

4

2Y3

5

1A3

6

2Y2

7

1A4

8 9

2Y1

GND

SN54F244 . . . FK PACKAGE

10

(TOP VIEW)

2Y4

1A1

3 2 1 20 19

4 5 6 7 8

9 10 11 12 13

2Y1

GND

20 19 18 17 16 15 14 13 12 11

V

1OE

2A1

CC

1Y4

V

CC

2OE 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1

18 17 16 15 14

2A2 2OE

1Y1 2A4 1Y2 2A3 1Y3

The SN54F244 is characterized for operation over the full military temperature range of –55°C to 125°C. The SN74F244 is characterized for operation from 0°C to 70°C.

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.

FUNCTION TABLE

(each buffer)

INPUTS

OE A

L H H L LL

HXZ

OUTPUT

Y

Copyright  1993, Texas Instruments Incorporated

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

2–1

SN54F244, SN74F244 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS

SDFS063A – D2932, MARCH 1987 – REVISED OCT OBER 1993

1

2 4 6 8

19

11 13 15 17

†

EN

logic symbol

1OE

1A1 1A2 1A3 1A4

2OE

2A1 2A2 2A3 2A4

†

This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.

18 16 14 12

logic diagram (positive logic)

1OE

1Y1 1Y2 1Y3 1Y4

9

2Y1

7

2Y2

5

2Y3

3

2Y4

1A1

1A2

1A3

1A4

2OE

2A1

2A2

1

2

4

6

8

19

11

13

18

16

14

12

1Y1

1Y2

1Y3

1Y4

9

2Y1

7

2Y2

2A3

2A4

15

17

5

2Y3

3

2Y4

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

Supply voltage range, V Input voltage range, V

Input current range –30 mA to 5 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Voltage range applied to any output in the disabled or power-off state –0.5 V to 5.5 V. . . . . . . . . . . . . . . . . . .

Voltage range applied to any output in the high state –0.5 V to V

Current into any output in the low state: SN54F244 96 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating free-air temperature range: SN54F244 –55°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

‡

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: The input voltage ratings may be exceeded provided the input current ratings are observed.

–0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CC

(see Note 1) –1.2 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

I

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SN74F244 128 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SN74F244 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

‡

CC

2–2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

SN54F244, SN74F244

UNIT

PARAMETER

TEST CONDITIONS

UNIT

V

VOLV

V

I

V

5.5 V

V

0.5 V

mA

V

Out uts oen

OCTAL BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SDFS063A – D2932, MARCH 1987 – REVISED OCTOBER 1993

recommended operating conditions

SN54F244 SN74F244

MIN NOM MAX MIN NOM MAX

V

CC

V

IH

V

IL

I

IK

I

OH

I

OL

T

A

electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)

V

IK

OH

I

OZH

I

OZL

I

IH

IL

I

OS

I

CC

†

All typical values are at VCC = 5 V, TA = 25°C.

‡

Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.

Supply voltage 4.5 5 5.5 4.5 5 5.5 V High-level input voltage 2 2 V Low-level input voltage 0.8 0.8 V Input clamp current –18 –18 mA High-level output current –12 –15 mA Low-level output current 48 64 mA Operating free-air temperature –55 125 0 70 °C

SN54F244 SN74F244

MIN TYP†MAX MIN TYP†MAX

VCC = 4.5 V, II = –18 mA –1.2 –1.2 V

IOH = – 3 mA 2.4 3.3 2.4 3.3

VCC = 4.5 V

VCC = 4.75 V, IOH = – 3 mA 2.7

= 4.5

CC

VCC = 5.5 V, VO = 2.7 V 50 50 µA VCC = 5.5 V, VO = 0.5 V –50 –50 µA VCC = 5.5 V, VI = 7 V 0.1 0.1 mA

VCC = 5.5 V, VI = 2.7 V 20 20 µA OE Any A

‡

CC

VCC = 5.5 V, VO = 0 –100 –225 –100 –225 mA

CC

p

=

= 5.5 V,

p

,

IOH = – 12 mA 2 3.2 IOH = – 15 mA 2 3.1

IOL = 48 mA 0.38 0.55 IOL = 64 mA 0.42 0.55

=

I

Outputs high 40 60 40 60 Outputs low 60 90 60 90 Outputs disabled 60 90 60 90

–1 –1

– 1.6 – 1.6

mA

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

2–3

SN54F244, SN74F244

(

)

(

)

(INPUT)

(OUTPUT)

A

Y

ns

OE

Y

ns

OE

Y

ns

OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS

SDFS063A – D2932, MARCH 1987 – REVISED OCT OBER 1993

switching characteristics (see Note 2)

VCC = 5 V, CL = 50 pF,

PARAMETER

t

PLH

t

PHL

t

PZH

t

PZL

t

PHZ

t † NOTE 2: Load circuits and waveforms are shown in Section 1.

PLZ

For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.

FROM INPUT

TO

OUTPUT

RL = 500 Ω, TA = 25°C

′F244 SN54F244 SN74F244

MIN TYP MAX MIN MAX MIN MAX

1.7 3.6 5.2 2 6.5 1.7 6.2

1.7 3.6 5.2 2 7 1.7 6.5

1.2 3.9 5.7 2 7 1.2 6.7

1.2 5 7 2 8.5 1.2 8

1.2 4.1 6 2 7 1.2 7

1.2 4.1 6 2 7.5 1.2 7

VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 500Ω, TA = MIN to MAX

†

UNIT

2–4

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

PACKAGE OPTION ADDENDUM

www.ti.com

PACKAGING INFORMATION

Orderable Device Status

5962-9758601Q2A ACTIVE LCCC FK 20 1 TBD Call TI Level-NC-NC-NC 5962-9758601QRA ACTIVE CDIP J 20 1 TBD Call TI Level-NC-NC-NC 5962-9758601QRA ACTIVE CDIP J 20 1 TBD Call TI Level-NC-NC-NC 5962-9758601QSA ACTIVE CFP W 20 1 TBD Call TI Level-NC-NC-NC

5962-9758601QSA ACTIVE CFP W 20 1 TBD Call TI Level-NC-NC-NC JM38510/33203B2A ACTIVE LCCC FK 20 1 TBD Call TI Level-NC-NC-NC JM38510/33203B2A ACTIVE LCCC FK 20 1 TBD Call TI Level-NC-NC-NC JM38510/33203BRA ACTIVE CDIP J 20 1 TBD Call TI Level-NC-NC-NC JM38510/33203BRA ACTIVE CDIP J 20 1 TBD Call TI Level-NC-NC-NC JM38510/33203BSA ACTIVE CFP W 20 1 TBD Call TI Level-NC-NC-NC JM38510/33203BSA ACTIVE CFP W 20 1 TBD Call TI Level-NC-NC-NC

SN54F244J ACTIVE CDIP J 20 1 TBD Call TI Level-NC-NC-NC

SN54F244J ACTIVE CDIP J 20 1 TBD Call TI Level-NC-NC-NC SN74F244DBLE OBSOLETE SSOP DB 20 TBD Call TI Call TI SN74F244DBLE OBSOLETE SSOP DB 20 TBD Call TI Call TI

SN74F244DBR ACTIVE SSOP DB 20 2000 Green (RoHS &

SN74F244DBRE4 ACTIVE SSOP DB 20 2000 Green (RoHS &

SN74F244DW ACTIVE SOIC DW 20 25 Green (RoHS &

SN74F244DWG4 ACTIVE SOIC DW 20 25 Green (RoHS &

SN74F244DWR ACTIVE SOIC DW 20 2000 Green (RoHS &

SN74F244DWRG4 ACTIVE SOIC DW 20 2000 Green (RoHS &

SN74F244N ACTIVE PDIP N 20 20 Pb-Free

SN74F244N3 OBSOLETE PDIP N 20 TBD Call TI Call TI SN74F244N3 OBSOLETE PDIP N 20 TBD Call TI Call TI

SN74F244NE4 ACTIVE PDIP N 20 20 Pb-Free CU NIPDAU Level-NC-NC-NC

(1)

Package

Type

Package Drawing

Pins Package

Qty

Eco Plan

no Sb/Br)

(RoHS)

(2)

Lead/Ball Finish MSL Peak Temp

CU NIPDAU Level-1-260C-UNLIM

CU NIPDAU Level-NC-NC-NC

17-Oct-2005

(3)

Addendum-Page 1