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Details, datasheet, quote on part number:SN74ALS1244ADWR
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Datasheet text preview:
SN54ALS1244A, SN74ALS1244A OCTAL BUFFERS AND DRIVERS WITH 3-STATE OUTPUTS
SDAS186B JULY 1990 REVISED JANUARY 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
SN54ALS1244A . . . J PACKAGE SN74ALS1244A . . . DW OR N PACKAGE (TOP VIEW)
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.
1A2 2Y3 1A3 2Y2 1A4
1OE 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
VC C 2OE 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1
SN54ALS1244A . . . FK PACKAGE (TOP VIEW)
2Y4 1A1 1OE VCC
4 5 6 7 8
3 2 1 20 19 18 17 16 15 14 9 10 11 12 13
2OE 1Y1 2A4 1Y2 2A3 1Y3
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
2Y1 GND 2A1 1Y4 2A2
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SN54ALS1244A, SN74ALS1244A OCTAL BUFFERS AND DRIVERS WITH 3-STATE OUTPUTS
SDAS186B JULY 1990 REVISED JANUARY 1995
logic symbol
1OE 1 EN 18 16 14 12
logic diagram (positive logic)
1OE 1
1A1 1A2 1A3 1A4
2 4 6 8
1Y1 1Y2 1Y3 1Y4
1A1
2
18
1Y1
1A2
4
16
1Y2
1A3 2OE 19 EN 1A4 2A1 2A2 2A3 2A4 11 13 15 17 9 7 5 3 2Y1 2Y2 2Y3 2Y4 2A1 2OE
6
14
1Y3
8
12
1Y4
19
11
9
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
2Y1
2A2
13
7
2Y2
2A3
15
5
2Y3
2A4
17
3
2Y4
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
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: SN54ALS1244A . . . . . . . . . . . . . . . . . . . . . . . . . . 55°C to 125°C SN74ALS1244A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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.
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POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
SN54ALS1244A, SN74ALS1244A OCTAL BUFFERS AND DRIVERS WITH 3-STATE OUTPUTS
SDAS186B JULY 1990 REVISED JANUARY 1995
recommended operating conditions
SN54ALS1244A MIN VCC VIH VIL IOH IOL TA Supply voltage High-level input voltage Low-level input voltage High-level output current Low-level output current Operating free-air temperature 55 4.5 2 0.7 12 8 125 0 NOM 5 MAX 5.5 SN74ALS1244A MIN 4.5 2 0.8 15 16 70 NOM 5 MAX 5.5 UNIT V V V mA mA °C
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER VIK TEST CONDITIONS CONDITIONS VCC = 4.5 V, VCC = 4.5 V to 5.5 V, VCC = 4.5 V II = 18 mA IOH = 0.4 mA IOH = 3 mA IOH = 12 mA IOH = 15 mA IOL = 8 mA IOL = 16 mA VO = 2.7 V VO = 0.4 V VI = 7 V VI = 2.7 V VI = 0.4 V VO = 2.25 V Outputs high Outputs low Outputs disabled 20 6 10 11 MIN SN54ALS1244A TYP MAX 1.5 VCC 2 2.4 2 2 0.25 0.4 20 20 0.1 20 0.1 112 15 20 25 30 6 10 11 0.25 0.35 0.4 0.5 20 20 0.1 20 0.1 112 11 17 20 mA V µA µA mA µA mA mA 3.2 VCC 2 2.4 3.2 MIN SN74ALS1244A TYP MAX 1.5 UNIT V
VOH
V
VOL IOZH IOZL II IIH IIL IO ICC
VCC = 4 5 V 4.5 VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V
All typical values are at VCC = 5 V, TA = 25°C. 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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