AM5728 datasheet(212/415 Pages) TI

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= V MAX (or V

MAX)

ref

= V

MIN (or V

MIN)

ref

pm_transvolt_prs403

Vref

pm_io_volt_prs403

Transmission Line

4.0 pF

1.85 pF

Z0 = 50

(see Note)

Tester Pin Electronics

Data Sheet Timing Reference Point

Output

Under

Test

3.5 nH

Device Pin

(see Note)

pm_tstcirc_prs403

AM5728, AM5726

SPRS915O – MARCH 2014 – REVISED OCTOBER 2015

www.ti.com

Table 7-1. Timing Parameters (continued)

SUBSCRIPTS

SYMBOL

PARAMETER

Active Edge

First Edge

Last Edge

High impedance

7.3.1

Parameter Information

Figure 7-1. Test Load Circuit for AC Timing Measurements

The load capacitance value stated is only for characterization and measurement of AC timing signals.

This load capacitance value does not indicate the maximum load the device is capable of driving.

7.3.1.1

1.8V and 3.3V Signal Transition Levels

All input and output timing parameters are referenced to Vref for both "0" and "1" logic levels. Vref = (VDD

I/O)/2.

Figure 7-2. Input and Output Voltage Reference Levels for AC Timing Measurements

All rise and fall transition timing parameters are referenced to VIL MAX and VIH MIN for input clocks, VOL

MAX and VOH MIN for output clocks.

Figure 7-3. Rise and Fall Transition Time Voltage Reference Levels

7.3.1.2

1.8V and 3.3V Signal Transition Rates

The default SLEWCONTROL settings in each pad configuration register must be used to guaranteed

timings, unless specific instructions otherwise are given in the individual timing sub-sections of the

datasheet.

212

Timing Requirements and Switching Characteristics

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