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74F779 Datasheet

  • 74F779

  • 8-Bit Bidirectional Binary Counter with 3-STATE Outputs

  • 7頁

  • FAIRCHILD

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74F779 8-Bit Bidirectional Binary Counter with 3-STATE Outputs
April 1988
Revised March 2000
74F779
8-Bit Bidirectional Binary Counter with 3-STATE Outputs
General Description
The 74F779 is a fully synchronous 8-stage up/down
counter with multiplexed 3-STATE I/O ports for bus-ori-
ented applications. All control functions (hold, count up,
count down, synchronous load) are controlled by two mode
pins (S
0
, S
1
). The device also features carry lookahead for
easy cascading. All state changes are initiated by the rising
edge of the clock.
Features
s
Multiplexed 3-STATE I/O ports
s
Built-in lookahead carry capability
s
Count frequency 100 MHz typ
s
Supply current 80 mA typ
s
Available in SOIC (300 mil only)
Ordering Code:
Order Number
74F779SC
74F779PC
Package Number
M16B
N16E
Package Description
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter 鈥淴鈥?to the ordering code.
Logic Symbol
Connection Diagram
漏 2000 Fairchild Semiconductor Corporation
DS009593
www.fairchildsemi.com

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