US3728560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bistable multivibrator circuit
Assignee: Motorola Solutions Inc
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Filing: 1971-12-23
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Granted: 1973-04-17
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Expires: 1991-12-23
Abstract
Abstract A bistable multivibrator circuit which is readily adaptable to monolithic integrated circuit technology combines the master and slave portions, reducing the components needed to provide a master/slave circuit operation when the multivibrator is used either as a frequency divider or as a gated logic circuit.
Inventors
- 👤 R Treadway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:27
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/28; H03K3/281; H03K3/286; H03K3/289
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
294 words
A bistable multivibrator including in combination: first and second voltage supply terminals; a first section having at least first and second transistors each having first, second and control electrodes, the first electrodes of said first and second transistors being coupled with said first voltage supply terminal; a second section having at least third, fourth and fifth transistors each having first, second and control electrodes, the first electrodes of said third, fourth and fifth transistors being coupled with said first voltage supply terminal; differential current steering gate means having at least one common terminal, at least one first output terminal coupled with the second electrodes of the transistors of said first section, and at least one second output terminal coupled with the second electrodes of the transistors of said second section; current source means coupling the common terminal of said current steering gate means with said second voltage supply terminal; first feedback transistor means having first, second and control electrodes, with the first electrode thereof coupled with said first Voltage supply terminal, the second electrode thereof coupled with the control electrode of said third transistor of said second section and coupled in circuit with said second voltage supply terminal, and the control electrode thereof coupled with the first electrode of said fourth transistor of said second section; second feedback transistor means having first, second and control electrodes, with the first electrode thereof coupled with said first voltage supply terminal, the second electrode thereof coupled with the control electrode of said first transistor and coupled in circuit with said second voltage supply terminal, and the control electrode thereof coupled with the first electrodes of said second and fifth transistors; and means for applying bias potentials to the control electrodes of said second, fourth and fifth transistors.
Claim 2
Dependent Claim
294 words
A bistable multivibrator including in combination: first and second voltage supply terminals; a first section having at least first and second transistors each having first, second and control electrodes, the first electrodes of said first and second transistors being coupled with said first voltage supply terminal; a second section having at least third, fourth and fifth transistors each having first, second and control electrodes, the first electrodes of said third, fourth and fifth transistors being coupled with said first voltage supply terminal; differential current steering gate means having at least one common terminal, at least one first output terminal coupled with the second electrodes of the transistors of said first section, and at least one second output terminal coupled with the second electrodes of the transistors of said second section; current source means coupling the common terminal of said current steering gate means with said second voltage supply terminal; first feedback transistor means having first, second and control electrodes, with the first electrode thereof coupled with said first Voltage supply terminal, the second electrode thereof coupled with the control electrode of said third transistor of said second section and coupled in circuit with said second voltage supply terminal, and the control electrode thereof coupled with the first electrode of said fourth transistor of said second section; second feedback transistor means having first, second and control electrodes, with the first electrode thereof coupled with said first voltage supply terminal, the second electrode thereof coupled with the control electrode of said first transistor and coupled in circuit with said second voltage supply terminal, and the control electrode thereof coupled with the first electrodes of said second and fifth transistors; and means for applying bias potentials to the control electrodes of said second, fourth and fifth transistors.
Claim 3
Dependent Claim
17 words
The combination according to claim 1 wherein all of said transistors are of the same conductivity type.
Claim 4
Dependent Claim
73 words
The combination according to claim 1 further including a control transistor therein, with said control transistor having first, second, and control electrodes, the first electrode thereof coupled through impedance means to said first voltage supply terminal and coupled with the control electrode of said first feedback transistor means, the second electrode thereof coupled with said current source means; and means for rendering said control transistor conductive and non-conductive in response to input signals.
Claim 5
Dependent Claim
21 words
The combination according to claim 1 wherein said first and second feedback transistor means are connected in emitter follower circuit configurations.
Claim 6
Dependent Claim
47 words
The combination according to claim 1 further including first resistance means coupling said first voltage supply terminal with the first electrodes of said second and fifth transistors; and second resistance means coupling the first electrode of at least said fourth transistor with said first voltage supply terminal.
Claim 7
Dependent Claim
18 words
The combination according to claim 5 wherein said first and second resistance means have the same predetermined value.
Claim 8
Dependent Claim
61 words
The combination according to claim 1 wherein said current steering gate means comprises sixth and seventh transistor means, each having first, second, and control electrodes, the first electrodes of said sixth and seventh transistor means comprising said first and second output terminals, respectively, and the second electrodes of said sixth and seventh transistor means being coupled together at said common terminal.
Claim 9
Dependent Claim
51 words
The combination according to claim 7 further including means for applying a bias potential to the control electrode of one of said sixth and seventh transistor means and means coupled with the control electrode of the other of said sixth and seventh transistor means for applying a varying input signal thereto.
Claim 10
Dependent Claim
134 words
The combination according to claim 7 further including first and second resistance means wherein said first section includes an eighth transistor in addition to said first and second transistors, with said eighth transistor having first, second and control electrodes, the control electrode of said eighth transistor coupled in common with the control electrode of said second transistor, the second electrode of said eighth transistor coupled with the first electrode of said sixth transistor means, the first electrode of said eighth transistor coupled through said first resistance means with said first voltage supply terminal and the first electrode of said fourth transistor coupled through said second resistance means with said first voltage supply terminal, so that normal and inverted outputs are obtainable from the first electrodes of said fourth transistor and said eighth transistor, respectively.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |