TL/F/9553
54F/74F540
#
54F/74F541
Octal
Buffer/Line
Driver
with
TRI-STATE
Outputs
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 Military
Package
Package Description
Number
74F540PC N20A 20-Lead (0.300 Wide) Molded Dual-In-Line
54F540DM (Note 2) J20A 20-Lead Ceramic Dual-In-Line
74F540SC (Note 1) M20B 20-Lead (0.300 Wide) Molded Small Outline, JEDEC
74F540SJ (Note 1) M20D 20-Lead (0.300 Wide) Molded Small Outline, EIAJ
54F540FM (Note 2) W20A 20-Lead Cerpack
54F540LM (Note 2) E20A 20-Lead Ceramic Leadless Chip Carrier, Type C
74F541PC N20A 20-Lead (0.300 Wide) Molded Dual-In-Line
54F541DM (Note 2) J20A 20-Lead Ceramic Dual-In-Line
74F541SC (Note 1) M20B 20-Lead (0.300 Wide) Molded Small Outline, JEDEC
74F541SJ (Note 1) M20D 20-Lead (0.300 Wide) Molded Small Outline, EIAJ
54F541FM (Note 2) W20A 20-Lead Cerpack
54F541LM (Note 2) E20A 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
Pin Assignment
for LCC
’F540
TL/F/9553–1
TL/F/9553–2
TRI-STATE is a registered trademark of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation RRD-B30M75/Printed in U. S. A.