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100370F Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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100370F Datasheet(HTML) 1 Page - National Semiconductor (TI) |
1 / 8 page 100370 Low Power Universal Demultiplexer/Decoder General Description The 100370 universal demultiplexer/decoder functions as ei- ther a dual 1-of-4 decoder or as a single 1-of-8 decoder, de- pending on the signal applied to the Mode Control (M) input. In the dual mode, each half has a pair of active-LOW Enable (E) inputs. Pin assignments for the E inputs are such that in the 1-of-8 mode they can easily be tied together in pairs to provide two active-LOW enables (E 1a to E1b,E2a to E2b). Signals applied to auxiliary inputs H a,Hb and Hc determine whether the outputs are active HIGH or active LOW. In the dual 1-of-4 mode the Address inputs are A 0a,A1a and A0b, A 1b with A2a unused (i.e., left open, tied to VEE or with LOW signal applied). In the 1-of-8 mode, the Address inputs are A 0a,A1a,A2a with A0b and A1b LOW or open. All inputs have 50 k Ω pulldown resistors. Features n 35% power reduction of the 100170 n 2000V ESD protection n Pin/function compatible with 100170 n Voltage compensated operating range = −4.2V to −5.7V Logic Symbols Pin Names Description A na,Anb Address Inputs E na,Enb Enable Inputs M Mode Control Input H a Z 0–Z3 (Z0a–Z3a) Polarity Select Input H b Z 4–Z7 (Z0b–Z3b) Polarity Select Input H c Common Polarity Select Input Z 0–Z7 Single 1-of-8 Data Outputs Z na,Znb Dual 1-of-4 Data Outputs Single 1-of 8 Application DS100311-1 Dual 1-of-4 Application DS100311-4 August 1998 © 1998 National Semiconductor Corporation DS100311 www.national.com |
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