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DM74ALS240A

Description
Octal 3-STATE Bus Driver
File Size344KB,9 Pages
ManufacturerFairchild
Websitehttp://www.fairchildsemi.com/
Download Datasheet Compare View All

DM74ALS240A Overview

Octal 3-STATE Bus Driver

DM74ALS240A, DM74ALS241A Octal 3-STATE Bus Driver
DM74ALS240A, DM74ALS241A
Octal 3-STATE Bus Driver
Features
Advanced low power oxide-isolated ion-implanted
September
2007
tm
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.
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
and 50pF
load
Switching response specifications guaranteed over
full temperature and V
CC
supply range
PNP input design reduces input loading
Low level drive current: 74ALS
=
24mA
Ordering Information
Order Number
DM74ALS240AWM
DM74ALS240ASJ
DM74ALS240AN
DM74ALS241AWM
Package
Number
M20B
M20D
N20A
M20B
Package Description
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
DM74ALS240A
DM74ALS241A
©1986 Fairchild Semiconductor Corporation
DM74ALS240A, DM74ALS241A Rev. 1.3
www.fairchildsemi.com

DM74ALS240A Related Products

DM74ALS240A DM74ALS240A_07 DM74ALS240AWM DM74ALS241A DM74ALS241AWM DM74ALS240ASJ DM74ALS240AN
Description Octal 3-STATE Bus Driver Octal 3-STATE Bus Driver Octal 3-STATE Bus Driver Octal 3-STATE Bus Driver Octal 3-STATE Bus Driver Octal 3-STATE Bus Driver Octal 3-STATE Bus Driver
Is it Rohs certified? - - conform to - conform to conform to conform to
Parts packaging code - - SOIC - SOIC SOIC DIP
package instruction - - 0.300 INCH, MS-013, SOIC-20 - 0.300 INCH, MS-013, SOIC-20 5.30 MM, EIAJ TYPE2, SOP-20 DIP, DIP20,.3
Contacts - - 20 - 20 20 20
Reach Compliance Code - - compli - unknown compliant unknow
Control type - - ENABLE LOW - ENABLE LOW/HIGH ENABLE LOW ENABLE LOW
series - - ALS - ALS ALS ALS
JESD-30 code - - R-PDSO-G20 - R-PDSO-G20 R-PDSO-G20 R-PDIP-T20
JESD-609 code - - e3 - e3 e3 e3
length - - 12.8 mm - 12.8 mm 12.6 mm 26.075 mm
Logic integrated circuit type - - BUS DRIVER - BUS DRIVER BUS DRIVER BUS DRIVER
MaximumI(ol) - - 0.024 A - 0.024 A 0.024 A 0.024 A
Number of digits - - 4 - 4 4 4
Number of functions - - 2 - 2 2 2
Number of ports - - 2 - 2 2 2
Number of terminals - - 20 - 20 20 20
Maximum operating temperature - - 70 °C - 70 °C 70 °C 70 °C
Output characteristics - - 3-STATE - 3-STATE 3-STATE 3-STATE
Output polarity - - INVERTED - TRUE INVERTED INVERTED
Package body material - - PLASTIC/EPOXY - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code - - SOP - SOP SOP DIP
Encapsulate equivalent code - - SOP20,.4 - SOP20,.4 SOP20,.3 DIP20,.3
Package shape - - RECTANGULAR - RECTANGULAR RECTANGULAR RECTANGULAR
Package form - - SMALL OUTLINE - SMALL OUTLINE SMALL OUTLINE IN-LINE
Peak Reflow Temperature (Celsius) - - 260 - 260 260 NOT APPLICABLE
power supply - - 5 V - 5 V 5 V 5 V
Maximum supply current (ICC) - - 25 mA - 30 mA 25 mA 25 mA
propagation delay (tpd) - - 9 ns - 11 ns 9 ns 9 ns
Certification status - - Not Qualified - Not Qualified Not Qualified Not Qualified
Maximum seat height - - 2.642 mm - 2.642 mm 2.1 mm 5.08 mm
Maximum supply voltage (Vsup) - - 5.5 V - 5.5 V 5.5 V 5.5 V
Minimum supply voltage (Vsup) - - 4.5 V - 4.5 V 4.5 V 4.5 V
Nominal supply voltage (Vsup) - - 5 V - 5 V 5 V 5 V
surface mount - - YES - YES YES NO
technology - - TTL - TTL TTL TTL
Temperature level - - COMMERCIAL - COMMERCIAL COMMERCIAL COMMERCIAL
Terminal surface - - Matte Tin (Sn) - Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn)
Terminal form - - GULL WING - GULL WING GULL WING THROUGH-HOLE
Terminal pitch - - 1.27 mm - 1.27 mm 1.27 mm 2.54 mm
Terminal location - - DUAL - DUAL DUAL DUAL
Maximum time at peak reflow temperature - - NOT SPECIFIED - NOT SPECIFIED NOT SPECIFIED NOT APPLICABLE
width - - 7.49 mm - 7.49 mm 5.3 mm 7.62 mm
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