Details, datasheet, quote on part number: SN54ALS240AFK
PartSN54ALS240AFK
CategoryLogic => Buffers/Inverters => 3-State
DescriptionOctal Buffers/drivers With 3-state Outputs
CompanyTexas Instruments, Inc.
DatasheetDownload SN54ALS240AFK datasheet
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Features, Applications

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/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. When these devices are used with the AS241A, ALS244, and AS244A, the circuit designer has a choice of selected combinations of inverting and noninverting outputs, symmetrical active-low output-enable (OE) inputs, and complementary OE and OE inputs. These devices feature high fan-out and improved fan-in. The -1 version SN74ALS240A is identical to the standard version, except that the recommended maximum IOL for the -1 version is 48 mA. There no -1 version of the SN54ALS240A. The SN54ALS240A and SN54AS240A are characterized for operation over the full military temperature range to 125C. The SN74ALS240A and SN74AS240A are characterized for operation from to 70C.

FUNCTION TABLE (each buffer) INPUTS OE OUTPUT

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.

This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
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: to 70C Storage temperature range. to 150C

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.

SN54ALS240A MIN VCC VIH VIL IOH IOL Supply voltage High-level input voltage Low-level input voltage High-level output current Low level output current Low-level NOM 5 MAX 5.5 SN74ALS240A MIN NOM 5 MAX 5.5 UNIT mA C

TA Operating free-air temperature Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V

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

Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V All typical values are at VCC 25C. The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.


 

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