Granted Patent B2

US 10,128,847 · App. 15/055,230 · Granted Nov 13, 2018

Abstract

Claims (20)

1. A level shifter circuit comprising:

a splitter circuit configured to operate on a first voltage potential to provide a first signal having a first transition edge and a first polarity and a second signal having a second transition edge and a second polarity that is substantially opposite to the first polarity, the second transition edge complementary to the first transition edge;

a one-shot pulse circuit configured to operate on the first voltage potential to provide a first one-shot pulse signal responsive, after a first delay, to the first transition edge of the first signal and a second one-shot pulse signal responsive, after a second delay, to the second transition edge of the second signal, the first and second one-shot pulse signals each having a corresponding voltage amplitude between a peripheral voltage and a reference voltage; and

a logic circuit configured to operate on a second voltage potential corresponding to the peripheral voltage to provide a third signal responsive to the first and second one-shot pulse signals each having the corresponding voltage amplitude between the peripheral voltage and the reference voltage, the second voltage potential being different from the first voltage potential, wherein the logic circuit comprises:

a set/reset (SR) latch circuit configured to provide fourth and fifth signals responsive to the first and second one-shot pulse signals, and

a mixer circuit configured to produce the third signal responsive to the fourth and fifth signals.

2. The level shifter circuit of claim 1 , wherein a first transition edge of the first one-shot pulse signal is responsive to a first transition edge of the first signal, and

wherein a first transition edge of the second one-shot pulse signal is responsive to a first transition edge of the second signal.

3. The level shifter circuit of claim 1 , wherein the logic circuit is further configured to provide the third signal having first transition edges based on the second one-shot pulse signal and second transition edges based on the first one-shot pulse signal.

4. The level shifter circuit of claim 1 , wherein the first transition edge of the first signal corresponds to a first falling edge, and wherein the second transition edge of the second signal corresponds to a second falling edge.

5. The level shifter circuit of claim 1 , wherein the reference voltage is ground.

6. A level shifter circuit comprising:

a splitter circuit configured to operate on a first voltage potential to provide a first signal having a first polarity and a second signal having a second polarity that is substantially opposite to the first polarity;

a one-shot pulse circuit configured to operate on the first voltage potential to provide a first one-shot pulse signal responsive to the first signal and a second one-shot pulse signal responsive to the second signal; and

a logic circuit configured to operate on a second voltage potential to provide a third signal responsive to the first and second one-shot pulse signals, the second voltage potential being different from the first voltage potential, wherein the logic circuit comprises:

a set/reset (SR) latch circuit configured to provide fourth and fifth signals responsive to the first and second one-shot pulse signals, and

a mixer circuit configured to produce the third signal responsive to the fourth and fifth signals.

7. The level shifter circuit of claim 6 , wherein a second transition edge of the fourth signal is responsive to a first transition edge of the first one-shot pulse signal, and

wherein the second transition edge of the fifth signal is responsive to the second transition edge of the second one-shot pulse signal.

8. The level shifter circuit of claim 6 , wherein the fifth signal is a complementary signal of the fourth signal.

Assignments (8)