Datasheet

I
2
C INTERFACE TIMING REQUIREMENTS
SWITCHING CHARACTERISTICS
PCA9536
www.ti.com ....................................................................................................................................................... SCPS125F – APRIL 2006 – REVISED AUGUST 2008
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 10 )
STANDARD MODE FAST MODE
I
2
C BUS I
2
C BUS
UNIT
MIN MAX MIN MAX
f
scl
I
2
C clock frequency 0 100 0 400 kHz
t
sch
I
2
C clock high time 4 0.6 µ s
t
scl
I
2
C clock low time 4.7 1.3 µ s
t
sp
I
2
C spike time 50 50 ns
t
sds
I
2
C serial-data setup time 250 100 ns
t
sdh
I
2
C serial-data hold time 0 0 ns
t
icr
I
2
C input rise time 1000 20 + 0.1C
b
(1)
300 ns
t
icf
I
2
C input fall time 300 20 + 0.1C
b
(1)
300 ns
t
ocf
I
2
C output fall time, 10-pF to 400-pF bus 300 20 + 0.1C
b
(1)
300 ns
t
buf
I
2
C bus free time between Stop and Start 4.7 1.3 µ s
t
sts
I
2
C Start or repeated Start condition setup time 4.7 0.6 µ s
t
sth
I
2
C Start or repeated Start condition hold time 4 0.6 µ s
t
sps
I
2
C Stop condition setup time 4 0.6 µ s
t
vd(data)
Valid data time, SCL low to SDA output valid 1 0.9 µ s
Valid data time of ACK condition, ACK signal from SCL low to SDA (out)
t
vd(ack)
1 0.9 µ s
low
C
b
I
2
C bus capacitive load 400 400 pF
(1) C
b
= Total capacitive load of one bus in pF
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 12 )
STANDARD MODE FAST MODE
FROM TO
I
2
C BUS I
2
C BUS
PARAMETER UNIT
(INPUT) (OUTPUT)
MIN MAX MIN MAX
t
pv
Output data valid SCL P3 – P0 200 200 ns
t
ps
Input data setup time P-port SCL 100 100 ns
t
ph
Input data hold time P-port SCL 1 1 µ s
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