| 摘要 |
PURPOSE:To discharge the charge stored in the wiring capacity to reduce the readout time, by providing the constant current circuit with the output gate of PLA (Programmable Logic Array). CONSTITUTION:Between the output wiring l from the OR logic matrix array OR of the output buffer circuit BUF to the output gate OG and the ground GND, the constant current circuit consisting of the npn transistor Trb is connected in series with the discharge resistor R1. Since the time when the output of the array OR changes from H to L is the time to discharge the wiring capacitor C with the constant current i, the readout time can be reduced by several tens of % with suitable set of the current i. |
