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DM74ALS240ASJ 데이터시트(PDF) 1 Page - Fairchild Semiconductor

부품명 DM74ALS240ASJ
상세설명  Octal 3-STATE Bus Driver
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제조업체  FAIRCHILD [Fairchild Semiconductor]
홈페이지  http://www.fairchildsemi.com
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tm
September
2007
©1986 Fairchild Semiconductor Corporation
www.fairchildsemi.com
DM74ALS240A, DM74ALS241A Rev. 1.3
DM74ALS240A, DM74ALS241A
Octal 3-STATE Bus Driver
Features
Advanced low power oxide-isolated ion-implanted
Schottky TTL process
Functional and pin compatible with the DM74LS
counterpart
Improved switching performance with less power
dissipation compared with the DM74LS counterpart
Switching response specified into 500
Ω and 50pF
load
Switching response specifications guaranteed over
full temperature and VCC supply range
PNP input design reduces input loading
Low level drive current: 74ALS
= 24mA
General Description
These octal 3-STATE bus drivers are designed to
provide the designer with flexibility in implementing a bus
interface with memory, microprocessor, or communi-
cation systems. The output 3-STATE gating control is
organized into two separate groups of four buffers.
The DM74ALS240A control inputs symmetrically enable
the respective outputs when set logic LOW, while the
DM74ALS241A has complementary enable gating.
The 3-STATE circuitry contains a feature that maintains
the buffer outputs in 3-STATE (high impedance state)
during power supply ramp-up or ramp-down. This elimi-
nates bus glitching problems that arise during power-up
and power-down.
Ordering Information
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
DM74ALS240A
DM74ALS241A
Order Number
Package
Number
Package Description
DM74ALS240AWM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
DM74ALS240ASJ
M20D
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
DM74ALS240AN
N20A
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
DM74ALS241AWM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide


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