NXP Semiconductors HEF4013B
The HEF4013B is a dual D-type flip-flop which features independent set direct (SD), clear direct (CD), clock inputs (CP) and outputs (O, O). The active HIGH asynchronous clear-direct (CD) and set-direct (SD) are independent and override the D or CP inputs. The outputs are buffered for best system performance.| Part No. | HEF4013B |
|---|---|
| Datasheet | HEF4013B Download |
| Manufacturer |  NXP Semiconductors |
| Description | Dual D-type flip-flop |
| Buy | Stock & Price |
DESCRIPTION
Data is accepted when CP is LOW and transferred to the output on the positive-going edge of the clock. Schmitt-trigger action in the clock input makes the circuit highly tolerant to slower clock rise and fall times. FUNCTION TABLES INPUTS SD H L H CD L H H CP X X X D X X X HEF4013B flip-flops OUTPUTS O H L H O L H H INPUTS SD L L Notes CD L L CP D L H OUTPUTS On + 1 L H On + 1 H L 1. H = HIGH state (the more positive voltage) L = LOW state (the less positive voltage) X = state is immaterial = positive-going transition On + 1 = state after clock positive transition PINNING D CP SD CD O O data inputs clock input (L to H edge-triggered) asynchronous set-direct input (active HIGH) asynchronous clear-direct input (active HIGH) true output complement output Fig.1 Functional diagram. HEF4013BP(N): HEF4013BD(F): HEF4013BT(D): 14-lead DIL; plastic (SOT27-1) 14-lead DIL; ceramic (cerdip) (SOT73) 14-lead SO; plastic (SOT108-1) ( ): Package Designator North America FAMILY DATA, IDD LIMITS category FLIP-FLOPS Fig.2 Pinning diagram.
