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54ACTQ646 Folha de dados(PDF) 4 Page - Texas Instruments |
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54ACTQ646 Folha de dados(HTML) 4 Page - Texas Instruments |
4 / 11 page Function Table Inputs Data I/O (Note 1) Function G DIR CPAB CPBA SAB SBA A 0–A7 B 0–B7 H X H or L H or L X X Isolation H X N X X X Input Input Clock A n Data into A Register H X X N X X Clock B n Data into B Register LH X X L X A n to Bn — Real Time (Transparent Mode) L H N X L X Input Output Clock A n Data into A Register L H H or L X H X A Register to B n (Stored Mode) L H N X H X Clock A n Data into A Register and Output to Bn LL X X X L B n to An — Real Time (Transparent Mode) L L X N X L Output Input Clock B n Data into B Register L L X H or L X H B Register to A n (Stored Mode) L L X N X H Clock B n Data into B Register and Output to An H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial N = LOW-to-HIGH Transition Note 1: The data output functions may be enabled or disabled by various signals at the G and DIR inputs. Data input functions are always enabled; i.e., data at the bus pins will be stored on every LOW-to-HIGH transition of the appropriate clock inputs. Real Time Transfer A-Bus to B-Bus DS100326-5 FIGURE 1. Real Time Transfer B-Bus to A-Bus DS100326-6 FIGURE 2. Storage from Bus to Register DS100326-7 FIGURE 3. Transfer from Register to Bus DS100326-8 FIGURE 4. www.national.com 3 |
Nº de peça semelhante - 54ACTQ646 |
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Descrição semelhante - 54ACTQ646 |
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