Datasheet

PCA9570 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 4 — 17 September 2014 20 of 32
NXP Semiconductors
PCA9570
Remote 4-bit general purpose outputs for 1 MHz I
2
C-bus
a. P port load configuration
b. Write mode (R/W =0)
c. Read mode (R/W
=1)
C
L
includes probe and jig capacitance.
t
v(Q)
is measured from 0.7  V
DD
on SCL to 50 % I/O (Pn) output.
All inputs are supplied by generators having the following characteristics: PRR  10 MHz; Z
o
=50; t
r
/t
f
 30 ns.
The outputs are measured one at a time, with one transition per measurement.
All parameters and waveforms are not applicable to all devices.
Fig 25. P port load circuit and voltage waveforms
002aag805
DUT
C
L
= 50 pF
500 Ω
Pn
2 × V
DD
500 Ω
002aag806
SCL
SDA
P0 A
t
v(Q)
0.3 × V
DD
0.7 × V
DD
P7
last stable bit
unstable
data
Pn
002aag807
SCL
Pn
P0 A
t
h(D)
0.3 × V
DD
0.7 × V
DD
P7
t
su(D)