JPS5558813A - Input circuit for selection signal - Google Patents

Input circuit for selection signal

Info

Publication number
JPS5558813A
JPS5558813A JP13052878A JP13052878A JPS5558813A JP S5558813 A JPS5558813 A JP S5558813A JP 13052878 A JP13052878 A JP 13052878A JP 13052878 A JP13052878 A JP 13052878A JP S5558813 A JPS5558813 A JP S5558813A
Authority
JP
Japan
Prior art keywords
circuit
mode
current
selection signal
integrated 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.)
Granted
Application number
JP13052878A
Other languages
Japanese (ja)
Other versions
JPS6248954B2 (en
Inventor
Morohisa Yamamoto
Akira Shibata
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.)
Hitachi Ltd
Renesas Eastern Japan Semiconductor Inc
Original Assignee
Hitachi Tokyo Electronics Co Ltd
Hitachi Ltd
Hitachi Ome Electronic 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 Hitachi Tokyo Electronics Co Ltd, Hitachi Ltd, Hitachi Ome Electronic Co Ltd filed Critical Hitachi Tokyo Electronics Co Ltd
Priority to JP13052878A priority Critical patent/JPS5558813A/en
Publication of JPS5558813A publication Critical patent/JPS5558813A/en
Publication of JPS6248954B2 publication Critical patent/JPS6248954B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Television Signal Processing For Recording (AREA)

Abstract

PURPOSE: To decrease the number of terminal leaders of the integrated circuit, by commonly using the two functions of the control of circuit current and mode selection in the integrated circuit with one terminal leader.
CONSTITUTION: When the switch 10 is at the mode 1, the current source circuit 18 is inoperative because of no current I1, and the circuits 13 and 14 are not operated since the currents I2 and I3 flow. Further, the selection signal LOW is delivered through the resistor 19 to the selection circuit 20 of the circuit 15 to conduct the input and output system of the mode 1. When the switch 10 is at the mode 2, the current source circuit 18 is operated and the currents I2 and I3 in proportion to the current I1 flowing to the resistor 11 flow to the circuits 13 and 14. That is, the currents I2 and I3 are controlled with the resistor 11. Further, the High potential of the selection signal of the circuit 15 is delivered to conduct the output path of the mode 2. Thus, the two functions of the control of circuit current in the integrated circuit and the mode selection are given to one drawing-out terminal, allowing to decrease the number of drawing-out terminals of the integrated circuit.
COPYRIGHT: (C)1980,JPO&Japio
JP13052878A 1978-10-25 1978-10-25 Input circuit for selection signal Granted JPS5558813A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13052878A JPS5558813A (en) 1978-10-25 1978-10-25 Input circuit for selection signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13052878A JPS5558813A (en) 1978-10-25 1978-10-25 Input circuit for selection signal

Publications (2)

Publication Number Publication Date
JPS5558813A true JPS5558813A (en) 1980-05-01
JPS6248954B2 JPS6248954B2 (en) 1987-10-16

Family

ID=15036447

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13052878A Granted JPS5558813A (en) 1978-10-25 1978-10-25 Input circuit for selection signal

Country Status (1)

Country Link
JP (1) JPS5558813A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5273624A (en) * 1975-12-16 1977-06-20 Mitsubishi Electric Corp Electric signal processing circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5273624A (en) * 1975-12-16 1977-06-20 Mitsubishi Electric Corp Electric signal processing circuit

Also Published As

Publication number Publication date
JPS6248954B2 (en) 1987-10-16

Similar Documents

Publication Publication Date Title
JPS5685934A (en) Control signal generating circuit
JPS57206113A (en) Amplifier for limiter
JPS5573994A (en) Three-state output circuit
JPS57174756A (en) Controlling system for mode setting
JPS5561144A (en) Logic circuit
JPS57104325A (en) Ecl circuit
JPS5558813A (en) Input circuit for selection signal
JPS5735422A (en) Semiconductor circuit
JPS6415821A (en) 3-state control system
JPS56141622A (en) Switching circuit
JPS5342848A (en) Current limiting circuit for two wire type transmitter
JPS54141174A (en) Supply current value switching circuit
JPS5474601A (en) Hysteresis circuit of current control
JPS5543643A (en) Constant voltage circuit
JPS5733832A (en) Output circuit
JPS5779457A (en) Voltage comparing circuit
JPS5651609A (en) Input circuit
JPS5236746A (en) Stabilizing circuit of voltage
JPS5752235A (en) Operating circuit device using superconductive material element
JPS5478964A (en) Selection circuit
JPS5279250A (en) Composite constant-current circuit
JPS5445770A (en) Stabilized power supply
JPS55138648A (en) Ionization type smoke detector
JPS55117937A (en) Filament current control circuit
JPS5583463A (en) Power supply