© 2000 Fairchild Semiconductor Corporation DS010139 www.fairchildsemi.com
November 1988
Revised August 2000
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74AC821 74ACT821
10-Bit D-Type Flip-Flop with 3-STATE Outputs
General Description
The AC/ACT821 is a 10-bit D-type flip-flop with 3-STATE
outputs arranged in a broadside pinout.
Features
a73 3-STATE outputs for bus interfacing
a73 Noninverting outputs
a73 Outputs source/sink 24 mA
a73 TTL compatible inputs

Ordering Code:
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code. (SPC not available in Tape and Reel.)
Logic Symbols
IEEE/IEC
Connection Diagram
Pin Descriptions
FACT is a trademark of Fairchild Semiconductor Corporation.
Order Number Package Number Package Description
74AC821SC M24B 24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74AC821SPC N24C 24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
74ACT821SC M24B 24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74ACT821MTC MTC24 24-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74ACT821SPC N24C 24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Pin Names Description
D
0
–D
9
Data Inputs
O
0
–O
9
Data Outputs
OE Output Enable Input
CP Clock Input