TL/F/9595
54F/74F821
10-Bit
D-Type
Flip-Flop
December 1994
54F/74F821
10-Bit D-Type Flip-Flop
General Description
The ’F821 is a 10-bit D-type flip-flop with TRI-STATE true
outputs arranged in a broadside pinout. The ’F821 is func-
tionally and pin compatible with the AMD’s Am29821.
Features
Y
TRI-STATE Outputs
Y
Direct replacement for AMD’s Am29821
Commercial Military
Package
Package Description
Number
74F821SPC N24C 24-Lead (0.300 Wide) Molded Dual-In-Line
54F821SDM (Note 2) J24F 24-Lead (0.300 Wide) Ceramic Dual-In-Line
74F821SC (Note 1) M24B 24-Lead (0.300 Wide) Molded Small Outline, JEDEC
54F821FM (Note 2) W24C 24-Lead Cerpack
54F821LM (Note 2) E28A 24-Lead Ceramic Leadless Chip Carrier, Type C
Note 1: Devices also available in 13 reel. Use suffix e SCX.
Note 2: Military grade device with environmental and burn-in processing. Use suffix e SDMQB, FMQB and LMQB.
Logic Symbols Connection Diagrams
TL/F/9595–1
IEEE/IEC
TL/F/9595–5
Pin Assignment
for DIP, SOIC and Flatpak
TL/F/9595–2
Pin Assignment
for LCC
TL/F/9595–3
TRI-STATE is a registered trademark of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation RRD-B30M75/Printed in U. S. A.