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Bit Multiplex Driver

IP.com Disclosure Number: IPCOM000042720D
Original Publication Date: 1984-Jun-01
Included in the Prior Art Database: 2005-Feb-04

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Jones, FD Mao, RS [+details]


When using a Shared Sense Amplifier Sensing Scheme, a driver is required to perform the array selection, optimize the signal sensing operation, and restore the sense amplifier. The circuit diagram illustrated in Fig. 1 performs this function in accordance with the waveform diagram of Fig. 2. Illustrated in Fig. 1 is a driver for bit multiplex left (ML1, ML2) and bit multiplex right (MR1, MR2). Transistors T5, T6, T7 and T8 perform the array selection. (The other multiplex lines are controlled by the corresponding transistors noted in prime notation). The up- level precharge signal (PR) precharges the driver internal node at the source of T5 (and T5') to VDD minus VT (where VDD is the supply voltage and VT is the threshold voltage of the field-effect transistors).