SY100S370

The SY100S370 is a universal demultiplexer/decoder that can be used as either a dual 1-of-4 decoder or as a single 1-of-8 decoder and is designed for use in highperformance ECL systems. The Mode control (M) input determines the function. In the dual 1-of-4 mode, each 4-input group has a pair of active-LOW Enable E ) inputs. The Enable pins are assigned such that in the single 1-of- 8 mode they can be tied together in pairs to result in two active-LOW Enable inputs. E 1a will be tied to E 1b and E 2a to E2b.

The auxiliary inputs (Hn) of SY100S370 are used to determine whether the outputs are active-HIGH or active-LOW. The address inputs for the dual 1-of-4 mode are A0a, A1a, A0b. A2a is unused. In the 1-of-8 mode, the address inputs are A0a, A1a, A2a. The inputs on the SY100S370 has 75KΩ pull-down resistors.