JPS6427093A - Decoder circuit - Google Patents
Decoder circuitInfo
- Publication number
- JPS6427093A JPS6427093A JP62184465A JP18446587A JPS6427093A JP S6427093 A JPS6427093 A JP S6427093A JP 62184465 A JP62184465 A JP 62184465A JP 18446587 A JP18446587 A JP 18446587A JP S6427093 A JPS6427093 A JP S6427093A
- Authority
- JP
- Japan
- Prior art keywords
- decoder
- circuit
- output
- base
- amplitude
- 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
Links
Landscapes
- Static Random-Access Memory (AREA)
- Semiconductor Memories (AREA)
- Dram (AREA)
Abstract
PURPOSE:To reduce the amplitude of a decoder line, to simultaneously decrease the time constant of output leading edge and to speed-up the action of a decoder circuit by providing a circuit to impress a signal generating circuit in proportion to a decoder output signal and a circuit to level-shift the output and to impress the output to the base, etc., of a transistor, etc. CONSTITUTION:A load resistance RD is divided into two, RD1 and RD2, and a dividing point is connected through a level shifting circuit consisting of an emitter and a constant current source to the base of a decoder transistor TRQD. This level shifting circuit reduces the base potential lower than the potential of the dividing point of the resistance for the line amplitude, decreases an output leading time constant, thereby acting to keep lower for an inter-base-emitter voltage VBE of an emitter follower QE. For this reason, at whatever point division ratio of the load resistance may be set, the decoder TRQD is not saturated, and can decrease the signal amplitude of the decoder line to the minimum value required for the action.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62184465A JP2600695B2 (en) | 1987-07-23 | 1987-07-23 | Decoder circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62184465A JP2600695B2 (en) | 1987-07-23 | 1987-07-23 | Decoder circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6427093A true JPS6427093A (en) | 1989-01-30 |
JP2600695B2 JP2600695B2 (en) | 1997-04-16 |
Family
ID=16153629
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62184465A Expired - Lifetime JP2600695B2 (en) | 1987-07-23 | 1987-07-23 | Decoder circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2600695B2 (en) |
-
1987
- 1987-07-23 JP JP62184465A patent/JP2600695B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2600695B2 (en) | 1997-04-16 |
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