pca9539 datasheet

P0 A
0.7 × V
CC
0.3 × V
CC
SCL
P3
ÎÎÎ
ÎÎÎ
ÎÎÎ
ÎÎÎ
ÎÎÎ
t
pv
(see Note B)
Slave
ACK
Unstable
Data
Last Stable Bit
SDA
Pn
Pn
WRITE MODE (R/W = 0)
P0 A
0.7 × V
CC
0.3 × V
CC
SCL
P3
0.7 × V
CC
0.3 × V
CC
t
ps
t
ph
READ MODE (R/W = 1)
DUT
C
L
= 50 pF
(see Note A)
P-PORT LOAD CONFIGURATION
Pn
2 × V
CC
500 W
500 W
PCA9539
SCPS130G –AUGUST 2005–REVISED JUNE 2014 www.ti.com
Parameter Measurement Information (continued)
A. C
L
includes probe and jig capacitance.
B. t
pv
is measured from 0.7 × V
CC
on SCL to 50% I/O (Pn) output.
C. All inputs are supplied by generators having the following characteristics: PRR ≤ 10 MHz, Z
O
= 50 Ω, t
r
/t
f
≤ 30 ns.
D. The outputs are measured one at a time, with one transition per measurement.
E. All parameters and waveforms are not applicable to all devices.
Figure 15. P-Port Load Circuit And Voltage Waveforms
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