Input/output buffer with reduced ring-back effect

Details Input/output buffer with reduced ring-back effect Input/output buffer with reduced ring-back effect

1998-08-19

2000-10-17

Tokar, Michael

Electronic digital logic circuitry

Interface

Current driving

326 86, 326 30, H03K 190175

Patent

active

061337552

ABSTRACT:
An input/output (I/O) buffer with reduced ring-back effect is provided. This I/O buffer is designed for a data transmission bus, such as a GTL+bus, for the transmission of a high-frequency and low-swing data signal. This I/O buffer is designed for the purpose of reducing the undesirable ring-back effect in the I/O buffer. The I/O buffer is characterized by the provision of a variable-resistance device that is connected between the system voltage and the input end of the I/O buffer. The system voltage is set to be equal in magnitude to the high-voltage logic state of the data signal received by the I/O buffer from the data transmission bus. When the input data signal is higher in magnitude than a preset reference voltage, i.e., at the high-voltage logic state, the variable-resistance device is switched to a low resistance value; on the other hand, when the data signal is lower in magnitude than the reference voltage, the variable-resistance device is switched to a near-infinity resistance value. In both cases, no current will flow through the variable-resistance device. This feature can help reduce the ring-back effect in the I/O buffer and also allows the benefits of low power consumption and reduced layout area on the circuit board as compared to the prior art.

REFERENCES:
patent: 5793222 (1998-08-01), Nakase

Affiliated with

Also associated with

Rating

Input/output buffer with reduced ring-back effect does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Input/output buffer with reduced ring-back effect, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Input/output buffer with reduced ring-back effect will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-472803