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Chapter 1: General Information
Specifications
The specifications are the performance standards against which the product is
tested.
Characteristics
These characteristics are not specifications, but are included as additional
information.
Maximum State Speed (selectable) 200 MHz
Minimum Master to Master Clock Time* 5.000 ns
Threshold Accuracy ± (65 mV + 1.5% of threshold setting)
Setup/Hold Time
*
Single Clock, Single Edge 4.5/-2.0 ns through -2.0/4.5 ns, adjustable in 100 ps
increments
Single Clock, Multiple Edges 5.0/-2.0 ns through -1.5/4.5 ns, adjustable in 100 ps
increments
Multiple Clocks, Multiple Edges 5.0/-2.0 ns through -1.5/4.5 ns, adjustable in 100 ps
increments
* Specified for an input signal VH = −0.9 V, VL = −1.7 V, slew rate = 1 V/ns, and threshold = −1.3 V.
Full Channel Half Channel
Maximum State Clock Rate 150 MHz not applicable
Maximum Conventional Timing Rate 250 MHz 500 MHz
Memory Depth (1680A, or 1690A-series) 512 K 1024 K
Memory Depth (1680AD or 1690AD-series) 2048 K 4196 K
Channel Count
1680A,AD or 1690A,AD 136 68
1681A,AD or 1691A,AD 102 51
1682A,AD or 1692A,AD 68 34
1683A,AD or 1693A,AD 34 17