PCA9509 Просмотр технического описания (PDF) - NXP Semiconductors.

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производитель

PCA9509

Level translating I2C-bus/SMBus repeater

NXP Semiconductors. 

NXP Semiconductors

PCA9509

Level translating I2C-bus/SMBus repeater

10.1 AC waveforms

input

output

0.5VCC(B)

tPHL

0.5VCC(B)

tPLH

VCC(B)

0.1 V

70 %

0.5VCC(A) 0.5VCC(A)

30 %

30 %

tTHL

70 %

VCC(A)

tTLH

VOL

002aab646

Fig 10. Propagation delay and transition times;

port B to port A

input

output

0.5VCC(A)

0.5VCC(A)

VCC(A)

tPHL

tPLH

70 %

0.5VCC(B) 0.5VCC(B)

30 %

30 %

tTHL

70 %

VCC(B)

tTLH

002aab647

Fig 11. Propagation delay and transition times;

port A to port B

input

port A

50 % of initial value

output

port B

0.5VCC(B)

tPLH2

002aab648

Fig 12. Propagation delay from the port A external driver switching off to port B LOW-to-HIGH transition;

port A to port B

11. Test information

VCC(B)

VCC(A)VCC(B)

RL

PULSE

VI

GENERATOR

VO

DUT

RT

CL

002aab649

RL = load resistor; 1.35 k on port B

CL = load capacitance includes jig and probe capacitance; 50 pF

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

Fig 13. Test circuit for open-drain outputs

PCA9509

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 7 — 4 November 2014

© NXP Semiconductors N.V. 2014. All rights reserved.

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