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National Semiconductor Electronic Components Datasheet

74F540 Datasheet

Octal Buffer/Line Driver with TRI-STATE Outputs

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May 1995
54F 74F540  54F 74F541
Octal Buffer Line Driver with TRI-STATE Outputs
General Description
The ’F540 and ’F541 are similar in function to the ’F240 and
’F244 respectively except that the inputs and outputs are
on opposite sides of the package (see Connection Dia-
grams) This pinout arrangement makes these devices es-
pecially useful as output ports for microprocessors allowing
ease of layout and greater PC board density
Features
Y TRI-STATE outputs drive bus lines
Y Inputs and outputs opposite side of package allowing
easier interface to microprocessors
Commercial
74F540PC
74F540SC (Note 1)
74F540SJ (Note 1)
74F541PC
74F541SC (Note 1)
74F541SJ (Note 1)
Military
54F540DM (Note 2)
54F540FM (Note 2)
54F540LM (Note 2)
54F541DM (Note 2)
54F541FM (Note 2)
54F541LM (Note 2)
Package
Number
N20A
J20A
M20B
M20D
W20A
E20A
N20A
J20A
M20B
M20D
W20A
E20A
Package Description
20-Lead (0 300 Wide) Molded Dual-In-Line
20-Lead Ceramic Dual-In-Line
20-Lead (0 300 Wide) Molded Small Outline JEDEC
20-Lead (0 300 Wide) Molded Small Outline EIAJ
20-Lead Cerpack
20-Lead Ceramic Leadless Chip Carrier Type C
20-Lead (0 300 Wide) Molded Dual-In-Line
20-Lead Ceramic Dual-In-Line
20-Lead (0 300 Wide) Molded Small Outline JEDEC
20-Lead (0 300 Wide) Molded Small Outline EIAJ
20-Lead Cerpack
20-Lead Ceramic Leadless Chip Carrier Type C
Note 1 Devices also available in 13 reel Use suffix e SCX and SJX
Note 2 Military grade device with environmental and burn-in processing Use suffix e DMQB FMQB and LMQB
Connection Diagrams
Pin Assignment for
DIP SOIC and Flatpak
’F540
Pin Assignment
for LCC
TL F 9553 – 1
TRI-STATE is a registered trademark of National Semiconductor Corporation
C1995 National Semiconductor Corporation TL F 9553
TL F 9553 – 2
RRD-B30M75 Printed in U S A


National Semiconductor Electronic Components Datasheet

74F540 Datasheet

Octal Buffer/Line Driver with TRI-STATE Outputs

No Preview Available !

Connection Diagrams (Continued)
’F541
TL F 9553–4
Unit Loading Fan Out
Pin Names
OE1 OE2
In
On On
Description
TRI-STATE Output Enable Input (Active LOW)
Inputs
Outputs
54F 74F
UL
HIGH LOW
10 10
10 10
600 106 6 (80)
Input IIH IIL
Output IOH IOL
20 mA b0 6 mA
20 mA b0 6 mA
b12 mA 64 mA (48 mA)
Truth Table
Inputs
OE1
L
H
X
L
OE2
L
X
H
L
H e HIGH Voltage Level
L e LOW Voltage Level
X e Immaterial
Z e High Impedance
I
H
X
X
L
Logic Diagrams
Outputs
’F540
’F541
LH
ZZ
ZZ
HL
IEEE IEC
’F540
IEEE IEC
’F541
TL F 9553 – 5
TL F 9553–3
2
TL F 9553 – 6


Part Number 74F540
Description Octal Buffer/Line Driver with TRI-STATE Outputs
Maker National
Total Page 8 Pages
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