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PLUS16R6 데이터시트(PDF) 13 Page - NXP Semiconductors |
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PLUS16R6 데이터시트(HTML) 13 Page - NXP Semiconductors |
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13 / 16 page ![]() 1.5V 1.5V 1.5V 1.5V 1.5V 1.5V VT 1.5V 1.5V +3V 0V +3V 0V VOH VOL +3V 0V I, B (INPUTS) CLK Q (REGISTERED OUTPUTS) OE tIH tIS tIS tCKH tCKL tCKP tCKO tOD1 tOE1 Flip-Flop Outputs I, B (INPUTS) O, B (COMBINATORIAL OUTPUTS) I, B (OUTPUT ENABLE) tPD tOE2 tOD2 1.5V 1.5V +1.5V +1.5V VT +3V 0V VOH VOL +3V 0V Gate Outputs 1.5V 1.5V 1.5V 1.5V 1.5V 1.5V 1.5V 0V VOH VOL +3V 0V +3V 0V VCC 4.5V VCC Q (REGISTERED OUTPUTS) I, B (INPUTS) CLK tPPR tCKO tIH tIS tIS tCKH tCKL tIS+tCKF Power–Up Reset Philips Semiconductors Programmable Logic Devices Product specification PLUS16R8D/-7 SERIES PAL devices 16L8, 16R8, 16R6, 16R4 September 10, 1993 48 TIMING DIAGRAMS1, 2 NOTES: 1. Input pulse amplitude is 0V to 3V. 2. Input rise and fall times are 2.5ns. TIMING DEFINITIONS SYMBOL PARAMETER tCKH Width of input clock pulse. tCKL Interval between clock pulses. tCKP Clock period. tIS Required delay between beginning of valid input and positive transition of clock. tIH Required delay between positive transition of clock and end of valid input data. tCKF Delay between positive transition of clock and when internal Q output of flip-flop becomes valid. tCKO Delay between positive transition of clock and when outputs become valid (with OE Low). tOE1 Delay between beginning of Output Enable Low and when outputs become valid. tOD1 Delay between beginning of Output Enable High and when outputs are in the Off-State. tOE2 Delay between predefined Output Enable High, and when combinational outputs become valid. tOD2 Delay between predefined Output Enable Low and when combinational outputs are in the Off-State. tPPR Delay between VCC (after power-on) and when flip-flop outputs become preset at “1” (internal Q outputs at “0”). tPD Propagation delay between combinational inputs and outputs. FREQUENCY DEFINITIONS fMAX No feedback: Determined by the minimum clock period, 1/(tCKL + tCKH). Internal feedback: Determined by the internal delay from flip-flop outputs through the internal feedback and array to the flip-flop inputs, 1/(tIS + tCKF). External feedback: Determined by clock-to-output delay and input setup time, 1/(tIS + tCKO). |
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