SC2200 datasheet(369/433 Pages) NSC

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Electrical Specifications (Continued)

8.3

AC CHARACTERISTICS

The tables in this section list the following AC characteris-

tics:

• Output delays

• Input setup requirements

• Input hold requirements

• Output float delays

• Power-up sequencing requirements

The default levels for measurement of the rising clock edge

reference voltage (VREF), and other voltages are shown in

Table 8-10. Input or output signals must cross these levels

during testing. Unless otherwise specified, all measure-

ment points in this section conform to these default levels.

All AC tests are at VIO = 3.14V to 3.46V (3.3V nominal), TC

=0 oCto 85 oC, CL = 50 pF, unless otherwise specified.

Figure 8-2. Drive level and Measurement Points for Switching Parameters

Table 8-10. Default Levels for Measurement of

Switching Parameters

Symbol

Parameter

Value (V)

VREF

Reference Voltage

1.5

VIHD

Input High Drive Voltage

2.0

VILD

Input Low Drive Voltage

0.8

VOHD

Output High Drive Voltage

2.4

VOLD

Output Low Drive Voltage

0.4

CLK

Outputs

Inputs

VIHD

VILD

VREF

Valid Input

Valid Output n+1

Valid Output n

VREF

VILD

VIHD

Min

Max

Legend: A = Maximum Output or Float Delay Specification

B = Minimum Output or Float Delay Specification

C = Minimum Input Setup Specification

D = Minimum Input Hold Specification

VOHD

VOLD

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