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IDT54FCT824AEB Datasheet(PDF) 3 Page - Integrated Device Technology |
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IDT54FCT824AEB Datasheet(HTML) 3 Page - Integrated Device Technology |
3 / 8 page IDT54/74FCT821/823/824/825A/B/C HIGH-PERFORMANCE CMOS BUS INTERFACE REGISTERS MILITARY AND COMMERCIAL TEMPERATURE RANGES 7.19 3 PRODUCT SELECTOR GUIDE 2608 tbl 01 PIN DESCRIPTION FUNCTION TABLE (1) IDT54/74FCT821/823/825 FUNCTION TABLE (1) IDT54/74FCT824 2608 tbl 10 Device 10-Bit 9-Bit 8-Bit Non-inverting 54/74FCT821A/B/C 54/74FCT823A/B/C 54/74FCT825A/B/C Inverting 54/74FCT824A/B/C NOTE: 2608 tbl 02 1. H = HIGH, L = LOW, X = Don’t Care, NC = No Change, ↑ = LOW-to-HIGH Transition, Z = High Impedance NOTE: 2608 tbl 03 1. H = HIGH, L = LOW, X = Don’t Care, NC = No Change, ↑ = LOW-to- HIGH Transition, Z = High Impedance Name I/O Description DI I The D flip-flop data inputs. CLR I For both inverting and non-inverting registers, when the clear input is LOW and OE is LOW, the QI outputs are LOW. When the clear input is HIGH, data can be entered into the register. CP I Clock Pulse for the Register; enters data into the register on the LOW-to- HIGH transition. YI , YI O The register three-state outputs. EN I Clock Enable. When the clock enable is LOW, data on the D I input is transferred to the QI output on the LOW-to-HIGH clock transition. When the clock enable is HIGH, the QI outputs do not change state, regardless of the data or clock input transitions. OE I Output Control. When the OE input is HIGH, the Y I outputs are in the high impedance state. When the OE input is LOW, the TRUE register data is present at the Y I outputs. Inputs Internal/ Outputs OE OE CLR CLR EN EN DI CP QI YI Function H H H H L L L H ↑ ↑ L H Z Z High Z H L L L X X X X X X L L Z L Clear H L H H H H X X X X NC NC Z NC Hold H H L L H H H H L L L L L H L H ↑ ↑ ↑ ↑ L H L H Z Z L H Load Inputs Internal/ Outputs OE OE CLR CLR EN EN DI CP QI YI Function H H H H L L L H ↑ ↑ H L Z Z High Z H L L L X X X X X X L L Z L Clear H L H H H H X X X X NC NC Z NC Hold H H L L H H H H L L L L L H L H ↑ ↑ ↑ ↑ H L H L Z Z H L Load |
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