Texas Instruments TMS320C6712D Parameter Measurement Information, Signal transition levels, 42 Ω

Models: TMS320C6712D

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SPRS293A − OCTOBER 2005 − REVISED NOVEMBER 2005

PARAMETER MEASUREMENT INFORMATION

42

3.5 nH

 

 

4.0 pF

1.85 pF

Tester Pin Electronics

Transmission Line

Z0 = 50

(see note)

Data Sheet Timing Reference Point

Output

Under

Test

Device Pin (see note)

NOTE: The data sheet provides timing at the device pin. For output timing analysis, the tester pin electronics and its transmission line effects must be taken into account. A transmission line with a delay of 2 ns or longer can be used to produce the desired transmission line effect. The transmission line is intended as a load only. It is not necessary to add or subtract the transmission line delay (2 ns or longer) from the data sheet timings.

Input requirements in this data sheet are tested with an input slew rate of < 4 Volts per nanosecond (4 V/ns) at the device pin.

Figure 15. Test Load Circuit for AC Timing Measurements

signal transition levels

All input and output timing parameters are referenced to 1.5 V for both “0” and “1” logic levels.

Vref = 1.5 V

Figure 16. 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, and VOL MAX and VOH MIN for output clocks.

Vref = VIH MIN (or VOH MIN)

Vref = VIL MAX (or VOL MAX)

Figure 17. Rise and Fall Transition Time Voltage Reference Levels

POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443

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Texas Instruments TMS320C6712D warranty Parameter Measurement Information, Signal transition levels, 42 Ω, Vref = 1.5