The following specifications apply for V

Symbol

Parameter

Conditions

Typical

Limits

Units

AC ELECTRICAL CHARACTERISTICS

F

MAX

Throughput Rate

TCK = 20MHz

1

MSPS

(max)

INPUT TIMING CHARACTERISTICS

t

SET

TDI to TCK (H/L)

(Note 3)

2.0

ns (min)

t

HOLD

TDI to TCK (H/L)

(Note 3)

1.5

ns (min)

t

SET

TMS to TCK (H/L)

(Note 3)

2.0

ns (min)

t

HOLD

TMS to TCK (H/L)

(Note 3)

2.0

ns (min)

t

W

TCK Pulse Width (H/L)

(Note 3)

10.0

ns (min)

t

REC

Recovery TIme TRST to TCK

(Note 3)

2.0

ns (min)

t

W

TRST Pulse Width (L)

(Note 3)

2.5

ns (min)

F

MAX

TCK

20

MHz (min)

Note 2: Absolute maximum ratings are limiting values, to be applied individually, and beyond which the serviceability of the circuit may be impaired. Functional

operability under any of these conditions is not implied. Exposure to maximum ratings for extended periods may affect device reliability.

Note 3: Data sheet min/max specification limits are guaranteed by design or statistical analysis.

Note 4: Except power supply pins.

Applications Information

POWER-UP TIMING

The SCANSTA476 typically requires 1 µs to power up ,

either after first applying V

sion shift. To return to normal, one "dummy" conversion must

be fully completed. After this first dummy conversion, the

SCANSTA476 will perform conversions properly.

STARTUP MODE

When the V

requires one dummy conversion after start-up.

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