PCA9507D datasheet(13/20 Pages) NXP

13 / 20 page

PCA9507_1

Product data sheet

Rev. 01 — 7 February 2008

13 of 20

NXP Semiconductors

PCA9507

2-wire serial bus extender for HDMI DDC I2C-bus and SMBus

10.1 AC waveforms

11. Test information

Fig 13. Propagation delay and transition times;

port B to port A

Fig 14. Propagation delay and transition times;

port A to port B

Fig 15. Propagation delay

002aad432

VCC(B)

1.2 V

tPLH

tTHL

0.3VCC(B)

input

output

20 %

0.3VCC(A) 0.3VCC(A)

80 %

20 %

80 %

tPHL

tTLH

VOL

0.1 V

002aad433

VCC(A)

VCC(B)

tPLH

tTHL

0.3VCC(A)

input

output

20 %

0.3VCC(B) 0.3VCC(B)

80 %

20 %

80 %

tPHL

tTLH

0.5 V

input

SDAB, SCLB

output

SCLA, SDAA

tPLH

002aad434

0.3VCC(A)

RL = load resistor; 1.35 kΩ on port B (2.7 V to 5 V) and 450 Ω on port A (2.7 V to 5.5 V).

CL = load capacitance includes jig and probe capacitance; 57 pF.

RT = termination resistance should be equal to Zo of pulse generators.

Fig 16. Test circuit for open-drain outputs

PULSE

GENERATOR

002aab649

VCC(B)

DUT

VCC(A)

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