PCA9509(2009) データシートの表示（PDF） - NXP Semiconductors.
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PCA9509 Datasheet PDF : 19 Pages
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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’s 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 kΩ 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_5
Product data sheet
Rev. 05 — 10 July 2009
© NXP B.V. 2009. All rights reserved.
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