Apparatus for providing pair of complementary outputs with first

Details Apparatus for providing pair of complementary outputs with first Apparatus for providing pair of complementary outputs with first

1996-04-30

1999-07-06

Lee, Thomas C.

Electronic digital logic circuitry

Multifunctional or programmable

Array

326 64, G06F 300

Patent

active

059207299

ABSTRACT:
A write driver, having a pair of inputs for receiving write data signals, includes a TTL buffer circuit connected to one input and a PECL buffer circuit connected to both inputs. A detector, responsive to a voltage at one of the inputs, selectively operates either the TTL buffer circuit or the PECL buffer circuit. The detector preferably comprises a comparator, a switching circuit, and two current mirrors. The comparator compares the voltage at one of the inputs to a reference voltage and outputs a signal controlling the switching circuit. The switching circuit enables one of the current mirrors, thereby enabling either the TTL or the PECL buffer circuit. In the preferred embodiment, a Schottky diode isolates the TTL buffer circuit from the PECL buffer circuit.

REFERENCES:
patent: 4625129 (1986-11-01), Ueno
patent: 4931673 (1990-06-01), Naghshineh
patent: 4943743 (1990-07-01), Pelley, III et al.
patent: 5025180 (1991-06-01), Xim et al.
patent: 5036225 (1991-07-01), Matsumoto
patent: 5103121 (1992-04-01), Wendell et al.
patent: 5105106 (1992-04-01), Barre
patent: 5132573 (1992-07-01), Tsuru et al.
patent: 5250856 (1993-10-01), Burton et al.
patent: 5300833 (1994-04-01), Oguri
patent: 5331219 (1994-07-01), Nakamura
patent: 5332935 (1994-07-01), Shyu
patent: 5343094 (1994-08-01), Nguyen
patent: 5404056 (1995-04-01), Maeda
patent: 5428305 (1995-06-01), Wong et al.
patent: 5463329 (1995-10-01), Kawasaki et al.

Affiliated with

Also associated with

Rating

Apparatus for providing pair of complementary outputs with first does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for providing pair of complementary outputs with first, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for providing pair of complementary outputs with first will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-906485