pca9574 NXP Semiconductors, pca9574 Datasheet - Page 18

• Manufacturer Part Number: pca9574
• Description: 8-bit I2c-bus And Smbus, Level Translating, Low Voltage Gpio With Reset And Interrupt
• Manufacturer: NXP Semiconductors

NXP Semiconductors
13. Dynamic characteristics
Table 15.
V
[1]
[2]
[3]
PCA9574_1
Product data sheet
Symbol
f
t
t
t
t
t
t
t
t
t
t
t
t
t
Port timing
t
t
t
Interrupt timing
t
t
Reset
t
t
t
t
SCL
BUF
HD;STA
SU;STA
SU;STO
VD;ACK
HD;DAT
VD;DAT
SU;DAT
LOW
HIGH
f
r
SP
v(Q)
su(D)
h(D)
v(INT_N)
rst(INT_N)
w(rst)
rec(rst)
rst(SDA)
rst(GPIO)
DD
= 1.1 V to 3.6 V; V
t
t
C
VD;ACK
VD;DAT
b
= total capacitance of one bus line in pF.
= minimum time for SDA data out to be valid following SCL LOW.
= time for acknowledgement signal from SCL LOW to SDA (out) LOW.
Parameter
SCL clock frequency
bus free time between a STOP and
START condition
hold time (repeated) START condition
set-up time for a repeated START
condition
set-up time for STOP condition
data valid acknowledge time
data hold time
data valid time
data set-up time
LOW period of the SCL clock
HIGH period of the SCL clock
fall time of both SDA and SCL signals
rise time of both SDA and SCL signals
pulse width of spikes that must be
suppressed by the input filter
data output valid time
data input set-up time
data input hold time
valid time on pin INT
reset time on pin INT
reset pulse width
reset recovery time
SDA reset time
GPIO reset time
Dynamic characteristics
DD(IO)
= 1.1 V to 3.6 V; V
SS
= 0 V; T
Rev. 01 — 15 May 2008
8-bit I
Conditions
Figure 17
Figure 17
amb
2
C-bus and SMBus, level translating, low voltage GPIO
= 40 C to +85 C; unless otherwise specified.
[1]
[2]
Standard-mode
Min
300
250
150
4.7
4.0
4.7
4.0
0.3
4.7
4.0
0
0
1
6
0
-
-
-
-
-
-
-
-
I
2
C-bus
1000
Max
3.45
100
300
200
450
450
50
4
4
-
-
-
-
-
-
-
-
-
-
-
-
-
20 + 0.1C
20 + 0.1C
Fast-mode I
Min
100
150
1.3
0.6
0.6
0.6
0.1
1.3
0.6
50
0
0
1
6
0
-
-
-
-
-
-
PCA9574
b
b
© NXP B.V. 2008. All rights reserved.
[3]
[3]
2
C-bus
Max
400
300
300
200
450
450
0.9
50
4
4
-
-
-
-
-
-
-
-
-
-
-
-
-
18 of 27
ns
ns
Unit
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
s
s
s
s
s
s
s
s
s
s