Texas Instruments SN54ALS1244AJ, SN74ALS1244ADW, SN74ALS1244ADWR, SN74ALS1244AN, SNJ54ALS1244AFK Datasheet
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SN54ALS1244A, SN74ALS1244A
OCTAL BUFFERS AND DRIVERS
WITH 3-STATE OUTPUTS
SDAS186B – JULY 1990 – REVISED JANUAR Y 1995
• Low-Power Versions of ′ALS244 Series
• 3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
• pnp Inputs Reduce dc Loading
• Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK), and Standard Plastic (N)
and Ceramic (J) 300-mil DIPs
description
These octal buffers and 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 SN74ALS1240, these
devices provide the choice of inverting and
noninverting outputs.
The SN54ALS1244A is characterized for
operation over the full military temperature range
of –55°C to 125°C. The SN74ALS1244A is
characterized for operation from 0°C to 70°C.
SN54ALS1244A ...J PACKAGE
SN74ALS1244A . . . DW OR N PACKAGE
SN54ALS1244A . . . FK 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
10
(TOP VIEW)
2Y4
3 2 1 20 19
4
5
6
7
8
910111213
1A1
20
19
18
17
16
15
14
13
12
11
V
1OE
CC
V
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
18
17
16
15
14
CC
1Y1
2A4
1Y2
2A3
1Y3
2Y1
GND
2A1
1Y4
2A2 2OE
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.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Copyright 1995, Texas Instruments Incorporated
1
SN54ALS1244A, SN74ALS1244A
OCTAL BUFFERS AND DRIVERS
WITH 3-STATE OUTPUTS
SDAS186B – JULY 1990 – REVISED JANUAR Y 1995
1
2
4
6
8
19
11
13
15
17
†
EN
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)
1A1
1A2
1A3
1A4
2A1
2A2
1
2
4
6
8
19
11
13
18
16
14
12
1Y1
1Y2
1Y3
1Y4
9
2Y1
7
2Y2
1OE
1Y1
1Y2
1Y3
1Y4
9
2Y1
7
2Y2
5
2Y3
3
2Y4
2OE
2A3
2A4
15
17
5
2Y3
3
2Y4
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
Input voltage, V
Voltage applied to a disabled 3-state output 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
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.
7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CC
7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I
: SN54ALS1244A –55°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . .
A
SN74ALS1244A 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
‡
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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