Texas Instruments JM38510-38303B2A, JM38510-38303BRA, SN54AS241AJ, SN54ALS241CJ, SN74ALS241CDWR Datasheet

SN54ALS241C, SN54AS241A, SN74ALS241C, SN74AS241A

OCTAL BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SDAS153E ± DECEMBER 1982 ± REVISED AUGUST 1995

• 3-State Outputs Drive Bus Lines or Buffer

SN54ALS241C, SN54AS241A . . . J PACKAGE

Memory Address Registers

SN74ALS241C, SN74AS241A . . . DW OR N PACKAGE

• pnp Inputs Reduce dc Loading

(TOP VIEW)

• Package Options Include Plastic

1OE

1

20

VCC

Small-Outline (DW) Packages, Ceramic

1A1

2

19

2OE

Chip Carriers (FK), and Standard Plastic (N)

2Y4

3

18

1Y1

and Ceramic (J) 300-mil DIPs

1A2

4

17

2A4

description

2Y3

5

16

1Y2

1A3

6

15

2A3

These

octal

buffers/drivers

are

designed

2Y2

7

14

1Y3

1A4

8

13

2A2

specifically to

improve

the performance

and

2Y1

9

12

1Y4

density of 3-state memory address drivers, clock

GND

10

11

2A1

drivers, and bus-oriented receivers and

transmitters. The designer has a choice of

selected combinations of inverting and

SN54ALS241C, SN54AS241A . . . FK PACKAGE

noninverting outputs, symmetrical active-low

(TOP VIEW)

output-enable (OE) inputs, and complementary

2Y4 1A1

1OE

CC

2OE

OE and OE inputs. These devices feature high

V

fan-out and improved fan-in.

3

2

1

20 19

1A2

1Y1

The -1 version of SN74ALS241C is identical to the

4

18

standard version, except that the recommended

2Y3

5

17

2A4

1A3

6

16

1Y2

maximum IOL of the -1 version is 48 mA. There is

2Y2

7

15

2A3

no -1 version of the SN54ALS241C.

The SN54ALS241C and SN54AS241A are

1A4

8

14

1Y3

9

10 11 12 13

characterized for operation over the full military

2Y1

GND

2A1

1Y4

2A2

temperature range of ±55°C to 125°C. The

SN74ALS241C

and

SN74AS241A

are

characterized for operation from 0°C to 70°C.

FUNCTION TABLES

	INPUTS		OUTPUT
		1A	1Y
1OE
	L	H	H
	L	L	L
	H	X	Z

INPUTS		OUTPUT
2OE	2A	2Y
H	H	H
H	L	L
L	X	Z

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.

Copyright 1995, Texas Instruments Incorporated

POST OFFICE BOX 655303 •DALLAS, TEXAS 75265

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SN54ALS241C, SN54AS241A, SN74ALS241C, SN74AS241A

OCTAL BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SDAS153E ± DECEMBER 1982 ± REVISED AUGUST 1995

logic symbol²									logic diagram (positive logic)
		1							1
				EN					1OE
1OE
									2
2							18															18		1Y1
1A1								1Y1	1A1
4							16
1A2								1Y2
6							14		4													16
1A3								1Y3																1Y2
8							12	1Y4	1A2
1A4									6													14		1Y3
19									1A3
2OE				EN					8													12		1Y4
11							9	2Y1	1A4
2A1
13							7
2A2								2Y2
15							5		19
2A3								2Y3	2OE
17							3
2A4								2Y4	11													9		2Y1
² This symbol is in accordance with ANSI/IEEE Std 91-1984									2A1
and IEC Publication 617-12.									13													7		2Y2
									2A2
																						5
									15															2Y3
									2A3
									17													3		2Y4
									2A4

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)³

Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . 7	V
Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . 7	V
Voltage applied to a disabled 3-state output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . 5.5	V
Operating free-air temperature range, TA: SN54ALS241C . . . . . . . . . . . . . . . . . . . . . . . . . . .	±55°C to 125°C
SN74ALS241C . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	±65°C to 150°C

³Stresses beyond those listed under ªabsolute maximum ratingsº 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 ªrecommended operating conditionsº is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

2	POST OFFICE BOX 655303 •DALLAS, TEXAS 75265

SN54ALS241C, SN54AS241A, SN74ALS241C, SN74AS241A

OCTAL BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SDAS153E ± DECEMBER 1982 ± REVISED AUGUST 1995

recommended operating conditions

				SN54ALS241C			SN74ALS241C			UNIT
				MIN	NOM	MAX	MIN	NOM	MAX
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					0.7			0.8	V
IOH	High-level output current					± 12			± 15	mA
IOL	Low-level output current					12			24	mA
									48²
TA	Operating free-air temperature			± 55		125	0		70	°C
² Applies only to the -1 version and only if V		CC	is between 4.75 V and 5.25 V

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

PARAMETER			TEST CONDITIONS		SN54ALS241C			SN74ALS241C			UNIT
					MIN	TYP³	MAX	MIN	TYP³	MAX
VIK	VCC = 4.5 V,			II = ± 18 mA			± 1.2			± 1.2	V
	VCC = 4.5 V to 5.5 V,			IOH = ± 0.4 mA	VCC ± 2			VCC ± 2
VOH				IOH = ± 3 mA	2.4	3.2		2.4	3.2		V
	VCC = 4.5 V			IOH = ± 12 mA	2
				IOH = ± 15 mA				2
				IOL = 12 mA		0.25	0.4		0.25	0.4
VOL	VCC = 4.5 V			IOL = 24 mA					0.35	0.5	V
				IOL = 48 mA (-1 version)					0.35	0.5
IOZH	VCC = 5.5 V,			VO = 2.7 V			20			20	μA
IOZL	VCC = 5.5 V,			VO = 0.4 V			± 20			± 20	μA
II	VCC = 5.5 V,			VI = 7 V			0.1			0.1	mA
IIH	VCC = 5.5 V,			VI = 2.7 V			20			20	μA
IIL	VCC = 5.5 V,			VI = 0.4 V			± 0.1			± 0.1	mA
I §	V		= 5.5 V,	V = 2.25 V	± 20		± 112	± 30		± 112	mA
O	CC			O
				Outputs high		9	17		9	18
ICC	VCC = 5.5 V										mA
				Outputs low		15	28		15	26
				Outputs disabled		17	32		17	30
³ All typical values are at V	CC	= 5 V, T = 25°C.
			A

§ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.

POST OFFICE BOX 655303 •DALLAS, TEXAS 75265

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