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參數(shù)資料
| 型號： | PCF8574 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Remote 8-bit I/O expander for I2C-bus |
| 中文描述： | SPECIALTY MICROPROCESSOR CIRCUIT |
| 文件頁數(shù)： | 14/24頁 |
| 文件大?。?/td> | 156K |
| 代理商： | PCF8574 |
1997 Apr 02
14
Philips Semiconductors
Product specification
Remote 8-bit I/O expander for I
2
C-bus
PCF8574
Note
1.
The Power-on reset circuit resets the I
2
C-bus logic with V
DD
< V
POR
and sets all I/Os to logic 1 (with current source
to V
DD
).
I/Os
V
IL
V
IH
I
IHL(max)
LOW level input voltage
HIGH level input voltage
maximum allowed input
current through protection
diode
LOW level output current
HIGH level output current
transient pull-up current
0.5
0.7V
DD
+0.3V
DD
V
DD
+ 0.5
±
400
V
V
μ
A
V
I
≥
V
DD
or V
I
≤
V
SS
I
OL
I
OH
I
OHt
V
OL
= 1 V; V
DD
= 5 V
V
OH
= V
SS
HIGH during acknowledge
(see Fig.14); V
OH
= V
SS
;
V
DD
= 2.5 V
10
30
25
1
300
mA
μ
A
mA
C
i
C
o
Port timing; C
L
≤
100 pF
(see Figs 10 and 11)
input capacitance
output capacitance
10
10
pF
pF
t
pv
t
su
t
h
output data valid
input data set-up time
input data hold time
0
4
4
μ
s
μ
s
μ
s
Interrupt INT
(see Fig.13)
I
OL
I
L
T
IMING
; C
L
≤
100
P
F
t
iv
t
ir
LOW level output current
leakage current
V
OL
= 0.4 V
V
I
= V
DD
or V
SS
1.6
1
+1
mA
μ
A
input data valid time
reset delay time
4
4
μ
s
μ
s
Select inputs A0 to A2
V
IL
V
IH
I
LI
LOW level input voltage
HIGH level input voltage
input leakage current
0.5
0.7V
DD
250
+0.3V
DD
V
DD
+ 0.5
+250
V
V
nA
pin at V
DD
or V
SS
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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相關代理商/技術參數(shù) |
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|---|---|
| PCF8574_02 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Remote 8-bit I/O expander for I2C-bus |
| PCF8574_07 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:REMOTE 8-BIT I/O EXPANDER FOR I2C BUS |
| PCF8574_08 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:REMOTE 8-BIT I/O EXPANDER FOR I2C BUS |
| PCF8574_10 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:REMOTE 8-BIT I/O EXPANDER FOR I2C BUS |
| PCF8574A | 制造商:TI 制造商全稱:Texas Instruments 功能描述:REMOTE 8BIT I/O EXPANDER FOR I2C BUS |
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