Frequency divider circuit arrangement

Details Frequency divider circuit arrangement Frequency divider circuit arrangement

1985-02-07

1987-01-13

Heyman, John S.

Electrical pulse counters, pulse dividers, or shift registers: c

Pulse counting or dividing chains

Using bistable regenerative trigger circuits

377105, 377117, H03K 2360

Patent

active

046370390

ABSTRACT:
In order to reduce the likelihood of incorrect states being transferred from one cross-coupled transistor pair to the next in a frequency divider which comprises at least two such pairs (6a, 7a and 8a, 9a) which are energized alternately by means of a switchable current source arrangement (5) and which are inter-coupled to form a cyclic arrangement by means of data transfer transistors (6b, 7b, 8b and 9b) energized from the same outputs (22, 23) of the current source arrangement, the transistors employed are of the insulated gate field effect type. The channel width-to-length ratios of the pair transistors (6a, 7a, 8a, 9a) may be chosen to be different from the corresponding ratios for the data transfer transistors (6b, 7b, 8b, 9b) in order to improve either the high-frequency or the low frequency performance in accordance with the sign of such difference.

REFERENCES:
patent: 3252009 (1966-05-01), Weimer
patent: 3996478 (1976-12-01), Kasaerkovitz
patent: 4156819 (1979-05-01), Takahashi et al.

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