Wide supply range digital level shifter cell

A method of controlling a wide supply range digital level shifter circuit configured to shift between a variable desired output voltage ranging from a first voltage level set by a first voltage rail and a second voltage level set by a second voltage rail, the method comprising:

• connecting a latch circuit between the first voltage rail and the second voltage rail, the latch circuit including first and second clocked differential switches, a first pair of cross-coupled switches, and a second pair of cross-coupled switches;
• connecting a first bleeder circuit between the second voltage rail and the first clocked differential switch;
• and
• connecting a second bleeder circuit between the second voltage rail and the second differential switch;
• and
• isolating the first and second digital input voltages from the variable desired output voltage via the first and second bleeder circuits.

A wide supply range digital level shifter circuit configured to shift between a variable desired output voltage ranging from a first voltage level set by a first voltage rail and a second voltage level set by a second voltage rail, the wide supply range digital level shifter circuit comprising:

• a latch circuit connected between the first voltage rail and the second voltage rail, the latch circuit including first and second clocked differential switches and a back-to-back inverter memory cell;
• a first bleeder circuit connected between the second voltage rail and the first clocked differential switch and configured to receive a first digital input voltage;
• and
• a second bleeder circuit connected between the second voltage rail and the second differential switch and configured to receive a second digital input voltage,
• wherein the first and second bleeder circuits isolate the first and second digital input voltages from the variable desired output voltage, and the back-to-back inverter memory cell enables temporary storage of the variable desired output voltage.