Datasheet

PCA9545A_45B_45C All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 9 — 5 May 2014 19 of 32
NXP Semiconductors
PCA9545A/45B/45C
4-channel I
2
C-bus switch with interrupt logic and reset
13. Test information
Fig 20. Expanded view of read input port register
SCL
002aab176
210 AP
70 %
30 %
SDA
INPUT
50 %
INT
t
v(INTnN−INTN)
t
d(INTnN−INTN)
Definitions test circuit:
R
L
= Load resistance.
C
L
= Load capacitance including jig and probe capacitance.
R
T
= Termination resistance should be equal to the output impedance Z
o
of the pulse generator.
Fig 21. Test circuitry for switching times
PULSE
GENERATOR
V
O
C
L
50 pF
R
L
500 Ω
002aab177
R
T
V
I
V
DD
V
DD
D.U.T.