pcf8574ats-3 NXP Semiconductors, pcf8574ats-3 Datasheet - Page 16

• Manufacturer Part Number: pcf8574ats-3
• Description: Remote 8-bit I/o Expander For I2c-bus
• Manufacturer: NXP Semiconductors

Philips Semiconductors
11 I
Note
1. All the timing values are valid within the operating supply voltage and ambient temperature range and refer to V
2002 Nov 22
I
f
t
t
t
t
t
t
t
t
t
t
t
t
handbook, full pagewidth
SYMBOL
2
SCL
SW
BUF
SU;STA
HD;STA
LOW
HIGH
r
f
SU;DAT
HD;DAT
VD;DAT
SU;STO
C-bus timing (see Fig.16; note 1)
Remote 8-bit I/O expander for I
PROTOCOL
SDA
SCL
and V
2
C-BUS TIMING CHARACTERISTICS
IH
with an input voltage swing of V
SCL clock frequency
tolerable spike width on bus
bus free time
START condition set-up time
START condition hold time
SCL LOW time
SCL HIGH time
SCL and SDA rise time
SCL and SDA fall time
data set-up time
data hold time
SCL LOW to data out valid
STOP condition set-up time
t SU;STA
t
BUF
CONDITION
START
(S)
t HD;STA
t LOW
PARAMETER
r t
BIT 7
MSB
(A7)
t HIGH
Fig.16 I
SS
to V
t SU;DAT
2
t f
C-bus
DD
1 / f SCL
2
C-bus timing diagram.
.
BIT 6
(A6)
16
t
HD;DAT
4.7
4.7
4.0
4.7
4.0
250
0
4.0
MIN.
(R/W)
BIT 0
LSB
t VD;DAT
ACKNOWLEDGE
TYP.
(A)
MBD820
100
100
1.0
0.3
3.4
Product specification
MAX.
CONDITION
STOP
PCF8574
(P)
t SU;STO
kHz
ns
ns
ns
s
s
s
s
s
s
s
s
s
UNIT
IL