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PCA9535EC Datasheet(PDF) 16 Page - ON Semiconductor

Part # PCA9535EC
Description  16-bit Low-Power I/O Expander for I2C Bus withInterrupt
PDF  20 Pages
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

PCA9535EC Datasheet(HTML) 16 Page - ON Semiconductor

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PCA9535E, PCA9535EC
http://onsemi.com
16
Rise and fall times refer to VIL and VIH
Figure 19. I2C Bus Timing Diagram
SCL
SDA
tHD;STA
tSU;DAT
tHD;DAT
tf
tBUF
tSU;STA
tLOW tHIGH
tVD;ACK
tSU;STO
protocol
START
condition
(S)
bit 7
MSB
(A7)
bit 6
(A6)
acknowledge
(A)
(P)
1/fSCL
tr
tVD;DAT
Figure 20. tV(Q) Timing
tv(Q)
SCL
IOn
tv(Q)
SCL
IOn
Figure 21. Test Circuitry for Switching Times
PULSE
GENERATOR
VO
CL
50 pF
RL
500 W
RT
VI
VDD
DUT
VDD
open
GND
RL = load resistor.
CL = load capacitance includes jig and probe capacitance.
RT = termination resistance should be equal to the output impedance of Zo of the pulse generators.
Figure 22. Load Circuit
CL
50 pF
RL
500 W
from output under test
2VDD
open
GND
S1
RL
500 W



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