IC D-type master/slave flip-flop
First Claim
1. An integrated circuit D-type master/slave flipflop comprising:
- a bistable master element connected between two supply voltage terminals, said master element having a first data input for receiving input data;
control means having a control input for erasing or enabling writing into the master element under the control of a control signal;
a bistable slave element connected between two supply voltage terminals and having a second data input connected to a data output of said master element, andmeans for controlling the slave element only via a data input signal at said second data input and for simultaneously writing into the slave element when said data input signal at said second data input reaches a predetermined voltage level.
1 Assignment
0 Petitions
Accused Products
Abstract
An integrated circuit, D-type master-slave flipflop includes a bistable master element connected between two supply voltage terminals and having a first data input for receiving data. A control means is provided having a control signal input for erasing or writing into the master element under the control of a control signal. A bistable slave element is connected between the two supply voltage terminals and has a second data input connected to a data output of the master element. The slave element is directly controlled by signals on the second data input for enabling writing into the slave element after an output signal at the master element data output reaches a predetermined voltage level.
14 Citations
12 Claims
-
1. An integrated circuit D-type master/slave flipflop comprising:
-
a bistable master element connected between two supply voltage terminals, said master element having a first data input for receiving input data; control means having a control input for erasing or enabling writing into the master element under the control of a control signal; a bistable slave element connected between two supply voltage terminals and having a second data input connected to a data output of said master element, and means for controlling the slave element only via a data input signal at said second data input and for simultaneously writing into the slave element when said data input signal at said second data input reaches a predetermined voltage level. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. An IC analog-to-digital converter comprising:
-
a plurality of D-type master/slave flip-flops having first data inputs coupled to an analog signal input terminal and having second inputs coupled to respective individual reference voltages, and means for coupling an encoding device to outputs of said plurality of flip-flops, and wherein each flip-flop comprises; a bistable master element comprising at least first and second cross-coupled transistors connected between two supply voltage terminals and having a respective one of said first data inputs for receiving input data, control means coupled to said first and second transistors for switching the transistors in response to a control signal received by the control means, a bistable slave element comprising at least third and fourth cross-coupled transistors connected between the two supply voltage terminals and having a second data input connected to a data output of its bistable master element, and means for controlling the bistable slave element only via a data input signal at the second data input and for simultanesouly switching the bistable slave element when the data input signal at the second data input reaches a predetermined voltage level. - View Dependent Claims (9, 10)
-
-
11. An IC voltage comparator comprising:
-
first and second transistors connected as a differential pair for comparing an analog input voltage at a control electrode of the first transistor with an analog reference voltage at a control electrode of the second transistor, and a D-type master/slave flip-flop having first and second data inputs coupled to respective outputs of said first and second transistors, wherein each master/slave flip-flop comprises; a bistable master element comprising third and fourth cross-coupled transistors connected between two supply voltage terminals and having respective control electrodes forming said first and second data inputs, a bistable slave element comprising fifth and sixth cross-coupled transistors connected between the two supply voltage terminals and having third and fourth data inputs coupled to respective data outputs of the third and fourth transistors, control means coupled to said third and fourth transistors for controlling said transistors in response to a control signal received by the control means, and means for controlling the bistable slave element only via a data input signal at the third and fourth data inputs and for simultaneously switching the bistable slave element when the data input signal at the third and fourth data inputs reaches a predetermined voltage level.
-
-
12. A D-type master/slave flip-flop comprising:
-
a bistable master element including first and second cross-coupled transistors coupled to a source of supply voltage and having respective first data inputs for receiving input data, control means coupled to said first and second transistors for controlling said transistors in response to a control signal received at a control input of the control means, and a bistable slave element including third and fourth cross-coupled transistors coupled to said source of supply voltage and having respective second data inputs coupled to respective data outputs of respective ones of said first and second transistors, wherein said third and fourth transistors are controlled at said second data inputs and independently of said control signal.
-
Specification