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 SN54F241, SN74F241

 OCTAL BUFFERS/DRIVERS

 WITH 3-STATE OUTPUTS

SDFS090 – MARCH 1987 – REVISED OCTOBER 1993

Copyright 

©

 1993, Texas Instruments Incorporated

2–1

POST OFFICE BOX 655303 

 DALLAS, TEXAS 75265

3-State Outputs Drive Bus Lines or Buffer

Memory Address Registers

Package Options Include Plastic

Small-Outline 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

F244, these devices provide the choice of

selected combinations of inverting and

noninverting outputs, symmetrical OE (active-low

output-enable) inputs, and complementary OE

and OE inputs.

The SN54F241 is characterized for operation over

the full military temperature range of – 55

°

C to

125

°

C. The SN74F241 is characterized for

operation from 0

°

C to 70

°

C.

FUNCTION TABLES

INPUTS

OUTPUT

1OE

1A

1Y

H

X

Z

L

H

H

L

L

L

INPUTS

OUTPUT

2OE

2A

2Y

H

H

H

H

L

L

L

X

Z

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

1OE

1A1

2Y4

1A2

2Y3

1A3

2Y2

1A4

2Y1

GND

V

CC

2OE

1Y1

2A4

1Y2

2A3

1Y3

2A2

1Y4

2A1

SN54F241 . . . J  PACKAGE

SN74F241 . . . DW OR N PACKAGE

(TOP VIEW)

3

2

1 20 19

9 10 11 12 13

4

5

6

7

8

18

17

16

15

14

1Y1

2A4

1Y2

2A3

1Y3

1A2

2Y3

1A3

2Y2

1A4

 SN54F241 . . . FK PACKAGE

(TOP VIEW)

2Y4

1A1

1OE

1Y4

2A2

2OE

2Y1

GND

2A1

V

CC

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.

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SN54F241, SN74F241

OCTAL BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SDFS090 – MARCH 1987 – REVISED OCTOBER 1993

2–2

POST OFFICE BOX 655303 

 DALLAS, TEXAS 75265

logic symbol

logic diagram (positive logic)

† This symbol is in accordance with ANSI/IEEE Std 91-1984

and IEC Publication 617-12.

2

1A1

4

1A2

6

1A3

8

1A4

EN

1

1Y1

18

1Y2

16

1Y3

14

1Y4

12

11

2A1

13

2A2

15

2A3

17

2A4

EN

19

2OE

2Y1

9

2Y2

7

2Y3

5

2Y4

3

1OE

1

2

4

6

8

19

11

13

15

17

3

5

7

9

12

14

16

18

1A1

1A2

1A3

1A4

1Y1

2OE

2A1

2A2

2A3

2A4

2Y1

1Y2

1Y3

1Y4

2Y2

2Y3

2Y4

1OE

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

Supply voltage range, V

CC

 

 – 0.5 V to 7 V

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

Input voltage range, V

I

 (see Note 1) 

 – 1.2 V to 7 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

CC

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

Current into any output in the low state: SN54F241 

 96 mA

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

SN74F241 

 128 mA

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

Operating free-air temperature range:

SN54F241 

 – 55

°

C to 125

°

C

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

SN74F241  

0

°

C to 70

°

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.

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 SN54F241, SN74F241

 OCTAL BUFFERS/DRIVERS

 WITH 3-STATE OUTPUTS

 SDFS090 – MARCH 1987 – REVISED OCTOBER 1993

2–3

POST OFFICE BOX 655303 

 DALLAS, TEXAS 75265

recommended operating conditions

SN54F241

SN74F241

UNIT

MIN

NOM

MAX

MIN

NOM

MAX

UNIT

VCC

Supply voltage

4.5

5

5.5

4.5

5

5.5

V

VIH

High-level input voltage

2

2

V

VIL

Low-level input voltage

0.8

0.8

V

IIK

Input clamp current

– 18

– 18

mA

IOH

High-level output current

– 12

– 15

mA

IOL

Low-level output current

48

64

mA

TA

Operating free-air temperature

– 55

125

0

70

°

C

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

otherwise noted)

PARAMETER

TEST CONDITIONS

SN54F241

SN74F241

UNIT

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

MIN

TYP†

MAX

UNIT

VIK

VCC = 4.5 V,

II = – 18 mA

– 1.2

– 1.2

V

IOH = – 3 mA

2.4

3.3

2.4

3.3

VOH

VCC = 4.5 V

IOH = – 12 mA

2

3.2

V

VOH

IOH = – 15 mA

2

3.1

V

VCC = 4.75 V,

IOH = – 3 mA

2.7

VOL

VCC = 4 5 V

IOL = 48 mA

0.38

0.55

V

VOL

VCC = 4.5 V

IOL = 64 mA

0.42

0.55

V

IOZH

VCC = 5.5 V,

VO = 2.7 V

50

50

µ

A

IOZL

VCC = 5.5 V,

VO = 0.5 V

– 50

– 50

µ

A

II

VCC = 5.5 V,

VI = 7 V

0.1

0.1

mA

IIH

VCC = 5.5 V,

VI = 2.7 V

20

20

µ

A

IIL

OE or OE

VCC = 5 5 V

VI = 0 5 V

– 1

– 1

mA

IIL

Any A

VCC = 5.5 V,

VI = 0.5 V

– 1.6

– 1.6

mA

IOS‡

VCC = 5.5 V,

VO = 0

– 100

– 225

– 100

– 225

mA

Outputs high

40

60

40

60

ICC

VCC = 5.5 V

Outputs low

60

90

60

90

mA

Outputs disabled

60

90

60

90

† 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.

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SN54F241, SN74F241

OCTAL BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SDFS090 – MARCH 1987 – REVISED OCTOBER 1993

2–4

POST OFFICE BOX 655303 

 DALLAS, TEXAS 75265

switching characteristics (see Note 2)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 5 V,

CL = 50 pF,

RL = 500 

,

TA = 25

°

C

VCC = 4.5 V to 5.5 V,

CL = 50 pF,

RL = 500

,

TA = MIN to MAX†

UNIT

(INPUT)

(OUTPUT)

F241

SN54F241

SN74F241

MIN

TYP

MAX

MIN

MAX

MIN

MAX

tPLH

Any A

Y

1.7

3.6

5.2

1.2

6.5

1.7

6.2

ns

tPHL

Any A

Y

1.7

3.6

5.2

1.2

7

1.7

6.5

ns

tPZH

OE or OE

Y

1.2

3.9

5.7

1.2

7

1.2

6.7

ns

tPZL

OE or OE

Y

1.2

5

7

1.2

8.5

1.2

8

ns

tPHZ

OE or OE

Y

1.2

4.1

6

1.2

7

1.2

7

ns

tPLZ

OE or OE

Y

1.2

4.1

6

1.2

7.5

1.2

7

ns

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

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

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pertaining to warranty, patent infringement, and limitation of liability.

TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in

accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent

TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily

performed, except those mandated by government requirements.

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TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent

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Copyright 

©

 1998, Texas Instruments Incorporated