JPS5753156A - Frequency dividing circuit - Google Patents

Frequency dividing circuit

Info

Publication number
JPS5753156A
JPS5753156A JP12831580A JP12831580A JPS5753156A JP S5753156 A JPS5753156 A JP S5753156A JP 12831580 A JP12831580 A JP 12831580A JP 12831580 A JP12831580 A JP 12831580A JP S5753156 A JPS5753156 A JP S5753156A
Authority
JP
Japan
Prior art keywords
frequency divider
vbe
vcc
frequency
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP12831580A
Other languages
Japanese (ja)
Inventor
Mitsuru Nagata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12831580A priority Critical patent/JPS5753156A/en
Publication of JPS5753156A publication Critical patent/JPS5753156A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
    • H03K23/58—Gating or clocking signals not applied to all stages, i.e. asynchronous counters

Landscapes

  • Manipulation Of Pulses (AREA)

Abstract

PURPOSE:To input the output of the frequency divider in the preceding stage to the frequency divider in the succeeding stage directly, by providing a voltage limiting element between the power supply terminal of the frequency divider and a power source in the frequency dividing circuit where 1/2 frequency dividers using differential ECLs are cascaded. CONSTITUTION:Power supply terminals of a master flip flop 13 and a slave flip flop 14 of a 1/2 frequency divider A are connected to a power source VCC through a diode D1. Consequently, in respect to the level of a clock CK applied to a 1/2 frequency divider B in the next stage, the high level is VCC-VD. VD corresponds to voltage drop of the diode D1. At this time, the collector potential of a transistor Q23 becomes VCC-VBE. VBE is the voltage between bases and a emitters of transistors Q17 and Q18. If VD VBE is true, the transistor Q23 is not saturated, and the output of the circuit A is supplied to the input of the circuit B directly.
JP12831580A 1980-09-16 1980-09-16 Frequency dividing circuit Pending JPS5753156A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12831580A JPS5753156A (en) 1980-09-16 1980-09-16 Frequency dividing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12831580A JPS5753156A (en) 1980-09-16 1980-09-16 Frequency dividing circuit

Publications (1)

Publication Number Publication Date
JPS5753156A true JPS5753156A (en) 1982-03-30

Family

ID=14981727

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12831580A Pending JPS5753156A (en) 1980-09-16 1980-09-16 Frequency dividing circuit

Country Status (1)

Country Link
JP (1) JPS5753156A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0144079A2 (en) * 1983-12-01 1985-06-12 Siemens Aktiengesellschaft Integratable semiconductor circuit for a frequency devider

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0144079A2 (en) * 1983-12-01 1985-06-12 Siemens Aktiengesellschaft Integratable semiconductor circuit for a frequency devider

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