CY2DP818ZXC datasheet(8/13 Pages) CYPRESS

8 / 13 page

CY2DP818

Document Number: 38-07061 Rev. *D

Page 8 of 13

Figure 2. Driver Design

Figure 3. Standard Termination

Figure 4. Differential Receiver to Driver Propagation Delay and Driver Transition Time[3,4,5,6]

Figure 5. Test Circuit and Voltage Definitions for the Driver Common Mode Output Voltage [3, 4, 5, 6]

TPA

TPC

TPB

GND

150

Pulse

Generator

10pF

VDD-2V

80%

20%

0V Differential

QnA - QnB

1.4 V

1.0 V

INPUT A

INPUT B

QnA

QnB

PLH

PHL

2.0V

1.6V

INPUT A

INPUT B

Next Device

VOD

VOC

TPA

TPC

TPB

GND

150

Standard Termination

Pulse

Generator

Notes

3. All input pulses are supplied by a frequency generator with the following characteristics: tR and tF  1 ns; pulse rerate = 50 Mpps; pulse width = 10 0.2 ns.

4. RL = 50 ohm

1%; Zline = 50 ohm 6”.

5. CL includes instrumentation and fixture capacitance within 6 mm of the UT.

6. TPA and B are used for prop delay and Rise/Fall measurements. TPC is used for VOC measurements only and is otherwise connected to VDD – 2V.

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