General description
The HEF4013B is a dual D-type flip-flop that features independent set-direct input (SD),
clear-direct input (CD), clock input (CP) and outputs (Q, Q). Data is accepted when CP is
LOW and is transferred to the output on the positive-going edge of the clock. The active
HIGH asynchronous CD and SD inputs are independent and override the D or CP inputs.
The outputs are buffered for best system performance. The clock input’s Schmitt-trigger
action makes the circuit highly tolerant of slower clock rise and fall times.
It operates over a recommended VDD power supply range of 3 V to 15 V referenced to VSS
(usually ground). Unused inputs must be connected to VDD, VSS, or another input.
Features and benefits
 Tolerant of slow clock rise and fall times
 Fully static operation
 5 V, 10 V, and 15 V parametric ratings
 Standardized symmetrical output characteristics
 Specified from 40 C to +125 C
 Complies with JEDEC standard JESD 13-B
Applications
 Counters and dividers
 Registers
 Toggle flip-flops