A device for measuring the duration of a pulse comprising: - a first circuit comprising a first chain of identical stages defining first and second delay lines, the first circuit forming a vernier delay line having an input connected to an input of the first delay line and to an input of the second delay line, and having an output configured to provide an output digital signal, or an output binary word, of the device representative of a duration of a pulse received by said input of the first circuit, said device being characterized in that it comprises: - a second circuit comprising a second chain of stages identical to the stages of the first chain, the second chain defining third and fourth delay lines; - a third circuit; - a fourth circuit having a first input connected to a first end of the third delay line, a second input connected to a second end of the third delay line and an output configured to provide to the third circuit a first pulse having a duration representative of the delay (N*T1) introduced by the third delay line when a binary signal is provided to the first end of the third line; - a fifth circuit having a first input connected to a first end of the fourth delay line, a second input connected to a second end of the fourth delay line and an output configured to provide to the third circuit a second pulse having a duration representative of the delay (N*T2) introduced by the fourth delay line when a binary signal is provided to the first end of the fourth line; - a node adapted to receive the pulse having the duration to be measured, said node being coupled to a first input of the third circuit; - a control circuit configured to provide a binary signal to the first end of the third line, a binary signal to the first end of the fourth line and a control signal to a second input of the third circuit, the third circuit being configured to selectively provide, to said input of the first circuit, the first pulse, the second pulse or the pulse received by the first input of the third circuit, based on the control signal received by the second input of the third circuit. - a first circuit comprising a first chain of identical stages defining first and second delay lines, the first circuit forming a vernier delay line having an input connected to an input of the first delay line and to an input of the second delay line, and having an output configured to provide an output digital signal, or an output binary word, of the device representative of a duration of a pulse received by said input of the first circuit, said device being characterized in that it comprises: - a second circuit comprising a second chain of stages identical to the stages of the first chain, the second chain defining third and fourth delay lines; - a third circuit; - a fourth circuit having a first input connected to a first end of the third delay line, a second input connected to a second end of the third delay line and an output configured to provide to the third circuit a first pulse having a duration representative of the delay (N*T1) introduced by the third delay line when a binary signal is provided to the first end of the third line; - a fifth circuit having a first input connected to a first end of the fourth delay line, a second input connected to a second end of the fourth delay line and an output configured to provide to the third circuit a second pulse having a duration representative of the delay (N*T2) introduced by the fourth delay line when a binary signal is provided to the first end of the fourth line; - a node adapted to receive the pulse having the duration to be measured, said node being coupled to a first input of the third circuit; - a control circuit configured to provide a binary signal to the first end of the third line, a binary signal to the first end of the fourth line and a control signal to a second input of the third circuit,