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74F112 Datasheet(PDF) 1 Page - Fairchild Semiconductor

Part No. 74F112
Description  Dual JK Negative Edge-Triggered Flip-Flop
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com

74F112 Datasheet(HTML) 1 Page - Fairchild Semiconductor

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© 2000 Fairchild Semiconductor Corporation
April 1988
Revised September 2000
Dual JK Negative Edge-Triggered Flip-Flop
General Description
The 74F112 contains two independent, high-speed JK flip-
flops with Direct Set and Clear inputs. Synchronous state
changes are initiated by the falling edge of the clock. Trig-
gering occurs at a voltage level of the clock and is not
directly related to the transition time. The J and K inputs
can change when the clock is in either state without affect-
ing the flip-flop, provided that they are in the desired state
during the recommended setup and hold times relative to
the falling edge of the clock. A LOW signal on SD or CD
prevents clocking and forces Q or Q HIGH, respectively.
Simultaneous LOW signals on SD and CD force both Q and
Asynchronous Inputs:
LOW input to SD sets Q to HIGH level
LOW input to CD sets Q to LOW level
Clear and Set are independent of clock
Simultaneous LOW on CD and SD makes both Q
and Q HIGH
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbols
Connection Diagram
Order Number
Package Number
Package Description
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

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