Title:
【発明の名称】相補的エミツタ・フオロワ・ドライバ
Document Type and Number:
Japanese Patent JP2557996
Kind Code:
B2
Abstract:
The present invention relates to fast complementary emitter follower drivers/buffers to be used in either a CMOS or pure complementary bipolar environment. The output driver (22) comprises top NPN and bottom PNP output transistors (T1, T2) with a common output node (N) connected therebetween. A terminal (15) is connected to the said output node (N) where the output signal (VOUT) is available. The pair of bipolar output transistors is biased between the first and second supply voltages (VH, GND). The output driver is provided with a voltage translator circuit (S) connected between the base nodes (B1, B2) of the output transistors (T1, T2). Logic signals (IN1, IN2), supplied by a preceding driving circuit (21), are applied to said base nodes. According to the invention, the voltage translator circuit (S) comprises two diodes (D1, D2) connected in series, preferably implemented with a main bipolar transistor having a junction shorted by a diode connected transistor to form a Darlington-like configuration. As a result, the voltage shift VS between the base nodes is selected to have the said output transistors operating at an operating point which ensures minimum delay and power consumption. In a typical bipolar technology, VS is made to be a approximately equal to 1,5 V. Additional features comprise the connection of a capacitor (C) between the base nodes and resistances (R1, R2) to the base nodes. The preceding driving circuit may be a CMOS logic gate or an ECL logic circuit.
Inventors:
JERAARU BUDON
PIEERU MORIE
SEIKI OGURA
DOMINIIKU OME
PASUKARU TANOFU
FURANKU WARAARU
PIEERU MORIE
SEIKI OGURA
DOMINIIKU OME
PASUKARU TANOFU
FURANKU WARAARU
Application Number:
JP5288890A
Publication Date:
November 27, 1996
Filing Date:
March 06, 1990
Export Citation:
Assignee:
INTAANASHONARU BIJINESU MASHIINZU CORP
International Classes:
H03K19/086; H03F1/30; H03F3/30; H03K17/56; H03K17/567; H03K17/66; H03K19/01; H03K19/013; H03K19/018; H03K19/08; (IPC1-7): H03K17/56; H03K19/01
Domestic Patent References:
| JPS57162832A | ||||
| JPS56104538A | ||||
| JPS6151447A | ||||
| JPS5242350A |
Other References:
【文献】米国特許4038607(US,A)
【文献】米国特許4159450(US,A)
【文献】米国特許4948994(US,A)
【文献】米国特許4159450(US,A)
【文献】米国特許4948994(US,A)
Attorney, Agent or Firm:
Kiyoshi Goda (3 others)