CD4013BE

Max Propagation Delay @ V, Max CL:	90ns @ 15V, 50pF
Base Part Number:	4013
Package / Case:	14-DIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 125°C (TA)
Input Capacitance:	5pF
Current - Quiescent (Iq):	4µA
Voltage - Supply:	3 V ~ 18 V
Current - Output High, Low:	6.8mA, 6.8mA
Trigger Type:	Positive Edge
Series:	4000B
Clock Frequency:	24MHz
Number of Bits per Element:	1
Number of Elements:	2
Output Type:	Differential
Type:	D-Type
Function:	Set(Preset) and Reset
Part Status:	Active
Packaging:	Tube

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The CD4013BE is a dual D flip-flop integrated circuit with two positive-edge triggered D flip-flops with body diodes for protection against back-EMF effects. The D inputs are connected directly to the outputs allowing the configuration of cascade networks which eliminates the need for external interconnection. The CD4013BE is a very versatile general-purpose dual D flip-flop.Application fieldsCD4013BE integrated circuits are used in a wide variety of applications such as data storage, signal regeneration, frequency division, and as bi-stable elements. Other possible applications include clocks and counters, arbitrary logic functions, and pulse-width modulation.In data storage applications such as hard disk drive controller circuits, the CD4013BE can be used to store binary numbers and perform the address decoding and signal conditioning operations necessary to read and write data. This dual flip-flop can also be used to implement multiple-input logic functions such as AND and OR gates.In signal regeneration and frequency division applications, the CD4013BE can be used to keep the pulses from exceeding a certain ratio between themselves. This can be very useful in preventing interference in digital systems with very precise timing requirements.In bi-stable elements, the CD4013BE can be used to design digital circuits that can be driven from two states, either a logic high or a logic low. This can be used to design digital circuits that can be driven from two states, either a logic high or a logic low.Working PrincipleThe CD4013BE dual flip-flop is composed of two positive-edge triggered flip-flops, with the data inputs connected directly to the outputs, thus allowing the formation of cascade networks with no external connections.The data inputs of the CD4013BE are triggered by a positive edge of an input clock. The data present at the D input is set to the Q output and the complementary output, which is Q’, is reset. The body diodes provide protection against back-EMF effects.When data is reset on the D input and a positive clock edge occurs, the data on the Q output is cleared and the data on the complementary output, Q’ , is set. This same behavior occurs when data is set on the D input and a positive clock edge occurs. This behavior is known as "toggle" and allows the CD4013BE to be used in counter and controller applications.Additionally, the two flip-flops can be connected in series so that the complementary outputs of the first flip-flop will be connected to the data inputs of the second one. This enables the register to be shifted, while the data outputs of the second flip-flop will contain the same information as the first register.ConclusionThe CD4013BE is a versatile dual flip-flop integrated circuit which can be used in data storage, signal regeneration, frequency division, bi-stable elements, clock and counter applications, and arbitrary logic functions. The data inputs are connected directly to the outputs allowing the formation of cascade networks with no external connections and it can also be used to implement multiple-input logic functions such as AND and OR gates. It is a very powerful and useful integrated circuit for many applications.

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