參數(shù)資料
型號: 933851670112
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: 8 I/O, PIA-GENERAL PURPOSE, PDIP16
封裝: 0.300 INCH, LEAD FREE, PLASTIC, SOT-38-4, DIP-16
文件頁數(shù): 7/33頁
文件大?。?/td> 316K
代理商: 933851670112
2002 Nov 22
15
Philips Semiconductors
Product specication
Remote 8-bit I/O expander for I2C-bus
PCF8574
Note
1. The Power-on reset circuit resets the I2C-bus logic at VDD <VPOR and sets all I/Os to logic 1 (with current source to
VDD).
I/Os
VIL
LOW level input voltage
0.5
+0.3VDD
V
VIH
HIGH level input voltage
0.7VDD
VDD + 0.5
V
IIHL(max)
maximum allowed input
current through protection
diode
VI ≥ VDD or VI ≤ VSS
±400
A
IOL
LOW level output current
VOL =1V; VDD =5V
10
25
mA
IOH
HIGH level output current
VOH =VSS
30
300
A
IOHt
transient pull-up current
HIGH during acknowledge
(see Fig.15); VOH =VSS;
VDD = 2.5 V
1
mA
Ci
input capacitance
10
pF
Co
output capacitance
10
pF
Port timing; CL ≤ 100 pF (see Figs 11 and 12)
tpv
output data valid
4
s
tsu
input data set-up time
0
s
th
input data hold time
4
s
Interrupt INT (see Fig.14)
IOL
LOW level output current
VOL = 0.4 V
1.6
mA
IL
leakage current
VI =VDD or VSS
1
+1
A
TIMING;CL ≤ 100 pF
tiv
input data valid time
4
s
tir
reset delay time
4
s
Select inputs A0 to A2
VIL
LOW level input voltage
0.5
+0.3VDD
V
VIH
HIGH level input voltage
0.7VDD
VDD + 0.5
V
ILI
input leakage current
pin at VDD or VSS
250
+250
nA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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