Integrated circuits including coil circuit and SCR
AssigneeTaiwan Semiconductor Manufacturing Company, Ltd.
InventorsWei-Min Wu, Ming-Dou Ker, Chun-Yu Lin, Li-Wei Chu
Life of this patent
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Abstract
An integrated circuit includes a T-coil circuit, a silicon-controlled rectifier (SCR), and a signal-loss prevention circuit. The T-coil circuit is coupled to an input/output (I/O) pad and an internal circuit. The SCR is coupled to the T-coil circuit and the internal circuit. The signal-loss prevention circuit is coupled to the T-coil circuit and the SCR. The signal-loss prevention circuit includes a resistor coupled to the T-coil circuit and the SCR. An electrostatic current flows through the resistor and turns on the SCR. The signal-loss prevention circuit may also include a diode circuit coupled to the T-coil circuit and the SCR. The diode circuit is configured to prevent signal loss.
Claims20
An integrated circuit, comprising:
- a T-coil circuit coupled to an input/output (I/O) pad and an internal circuit;
- a silicon-controlled rectifier (SCR) coupled to the T-coil circuit and the internal circuit;
- and
- a signal-loss prevention circuit coupled to the T-coil circuit and the SCR.
An integrated circuit, comprising:
- a T-coil circuit coupled to an input/output (I/O) pad and an internal circuit;
- a silicon-controlled rectifier (SCR) coupled to the T-coil circuit and the internal circuit;
- and
- a trigger circuit coupled to the T-coil circuit and the SCR,
- wherein the T-coil circuit is configured to trigger, via the trigger circuit, the SCR for discharging static electricity.
An integrated circuit, comprising:
- a coil circuit coupled to an input/output (I/O) pad and an internal circuit, the coil circuit including an inductor;
- a silicon-controlled rectifier (SCR) coupled to the coil circuit and the internal circuit;
- and
- a diode circuit coupled to the coil circuit and the SCR,
- wherein:
- the inductor and the SCR are configured to provide a first current path for discharging from the I/O pad to a ground when an electrostatic current occurs;
- and
- the diode circuit is configured to provide a second current path to accelerate a turn-on speed of the SCR.
Dependencies are inferred from the claim text.