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Hold time

Hold time is minimal time for the data set and stability after the appearance of the clock pulse.

The hold time example of the microcircuit recommended by manufacturers is shown in the table below:

Logic	Clock rate	Setup time	Hold time
Altera Max 7000 PLD	200 MHz	2.5 ns	0.5 ns
Lattice GAL22V10-7 PAL	133 MHz	4.5 ns	0 ns
TI TMS320C549-40 DSP	80 MHz	5 ns	0 ns
Motorola MCM69D536 SRAM	66 MHz	3 ns	1 ns
Motorola MPC 860 Comm Controller	50 MHz	4 ns	2 ns
IDT 72420L20 Synchronous FIFO	50 MHz	5 ns	1 ns
Motorola Coldfire MCF 5206 Microcontroller	33 MHz	3 ns	3 ns
Motorola MC68332 Microcontroller	16 MHz	5 ns	0 ns
AMD 29DL800B Flash Memory	16 MHz	35 ns	0 ns
TI FN74LVC573A Octal Latch	n/a	2 ns	1.5 ns

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