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74F2240
Octal Buffer/Line Driver with 25 Ohm Series Resistors in the Outputs
TL/F/10898
74F2240
Octal
Buffer/Line
Driver
with
Series
Resistors
the
Outputs
January 1995
74F2240
Octal Buffer/Line Driver with 25X
Series Resistors in the Outputs
General Description
The ’F2240isan inverting octal bufferandline driverde-
signedto drive capacitive inputsof MOS memory devices,
addressand clock linesoractasalow undershoot general
purposebus driver.
The 25X series resistorinthe outputs reduces undershoot
and ringingand eleminatesthe needfor external resistors.
Features TRI-STATEÉ outputs drivebus linesor buffer memory
address registers Outputs sink12mAand source15mA 25X series resistorsin outputs eliminatethe needfor
external resistors Designedto drivethe capacitive inputsof MOS devices Guaranteed 4000V minimum ESD protection
Commercial Military Package Package DescriptionNumber
74F2240SC (Note1) M20B 20-Lead (0.300× Wide) Molded Small Outline,JEDEC
74F2240SJ (Note1) M20D 20-Lead (0.300× Wide) Molded Small Outline,EIAJ
Note1: Devicesalso availablein13× reel.Use suffixeSCXandSJX.
Connection Diagram
Pin Assignment
SOIC
TL/F/10898–1
Truth Table
OE1 D1n O1n OE2 D2n O2n Z HX Z L LH L H LL H
Unit Loading/Fan Out:
PinNames Description 74F
U.L.High/Low Output IOH/IOL
OE1,OE2 TRI-STATE Output Enable Input(Active LOW) 1.0/1.667 20 mA/b1mA
I0–I7 Inputs 1.0/1.667 20 mA/b1mA
O0–O7 Outputs 750/20 b15 mA/12mA
TRI-STATEÉ isaregistered trademarkof National SemiconductorCorporation.
C1995National SemiconductorCorporation RRD-B30M75/PrintedinU.S.A.
