DS91M047 datasheet(5/12 Pages) NSC

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Switching Characteristics (Note 11, Note 12, Note 18)

Over supply voltage and operating temperature ranges, unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Units

PHL

Differential Propagation Delay High to Low

L = 50Ω

L = 5 pF,

D = 0.5 pF

Figures 6, 7

1.5

3.1

5.0

PLH

Differential Propagation Delay Low to High

1.5

3.1

5.0

SKD1

Differential Pulse Skew |t

PHL − tPLH| (Note 13, Note 14)

140

SKD2

Channel-to-Channel Skew (Note 13, Note 15)

200

SKD3

Differential Part-to-Part Skew (Note 13, Note 16)

(Constant T

A and VDD)

0.8

1.5

SKD4

Differential Part-to-Part Skew (Note 17)

3.5

TLH

Rise Time (Note 13)

1.1

2.0

3.0

THL

Fall Time (Note 13)

1.1

2.0

3.0

PHZ

Disable Time High to Z

L = 50Ω

L = 5 pF,

D = 0.5 pF

Figures 8, 9

12.5

PLZ

Disable Time Low to Z

12.5

PZH

Enable Time Z to High

12.5

PZL

Enable Time Z to Low

12.5

MAX

Maximum Operating Frequency

(Note 13)

125

MHz

Note 11: The Electrical Characteristics tables list guaranteed specifications under the listed Recommended Operating Conditions except as otherwise modified

or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and are not guaranteed.

Note 12: Typical values represent most likely parametric norms for V

DD = +3.3V and TA = +25°C, and at the Recommended Operation Conditions at the time of

product characterization and are not guaranteed.

Note 13: Specification is guaranteed by characterization and is not tested in production.

Note 14: t

SKD1, |tPLHD − tPHLD|, Pulse Skew, is the magnitude difference in differential propagation delay time between the positive going edge and the negative

going edge of the same channel.

Note 15: t

SKD2, Channel-to-Channel Skew, is the difference in propagation delay (tPLHD or tPHLD) among all output channels.

Note 16: t

SKD3, Part-to-Part Skew, is defined as the difference between the minimum and maximum differential propagation delays. This specification applies to

devices at the same V

DD and within 5°C of each other within the operating temperature range.

Note 17: t

SKD4, Part-to-Part Skew, is the differential channel-to-channel skew of any event between devices. This specification applies to devices over

recommended operating temperature and voltage ranges, and across process distribution. t

SKD4 is defined as |Max − Min| differential propagation delay.

Note 18: C

L includes fixture capacitance and CD includes probe capacitance.

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