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參數資料
| 型號： | PCF8574T |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | I2C/I2S |
| 英文描述： | Remote 8-bit I-O expander for I2C-bus |
| 封裝： | PCF8574AP<SOT38-4 (DIP16)|<<http://www.nxp.com/packages/SOT38-4.html<1<Always Pb-free,;PCF8574AT/3<SOT162-1 (SO16)|<<http://www.nxp.com/packages/SOT162-1.html<1<wee |
| 文件頁數： | 16/24頁 |
| 文件大小： | 132K |
| 代理商： | PCF8574T |
2002 Nov 22
16
Philips Semiconductors
Product specification
Remote 8-bit I/O expander for I
2
C-bus
PCF8574
11 I
2
C-BUS TIMING CHARACTERISTICS
Note
1.
All the timing values are valid within the operating supply voltage and ambient temperature range and refer to V
IL
and V
IH
with an input voltage swing of V
SS
to V
DD
.
SYMBOL
PARAMETER
MIN.
TYP.
MAX.
UNIT
I
2
C-bus timing
(see Fig.16; note 1)
f
SCL
t
SW
t
BUF
t
SU;STA
t
HD;STA
t
LOW
t
HIGH
t
r
t
f
t
SU;DAT
t
HD;DAT
t
VD;DAT
t
SU;STO
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
4.7
4.7
4.0
4.7
4.0
250
0
4.0
100
100
1.0
0.3
3.4
kHz
ns
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
ns
ns
μ
s
μ
s
Fig.16 I
2
C-bus timing diagram.
handbook, full pagewidth
PROTOCOL
SCL
SDA
MBD820
BIT 0
LSB
(R/W)
tHD;STA
tSU;DAT
tHD;DAT
tVD;DAT
tSU;STO
tf
r
t
tBUF
tSU;STA
tLOW
tHIGH
1 / fSCL
START
CONDITION
(S)
BIT 7
MSB
(A7)
BIT 6
(A6)
ACKNOWLEDGE
(A)
STOP
CONDITION
(P)
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相關代理商/技術參數 |
參數描述 |
|---|---|
| PCF8574T K72741 | 制造商:NXP Semiconductors 功能描述: |
| PCF8574T | 制造商:NXP Semiconductors 功能描述:IC SM I/O EXPANDER 8-BIT |
| PCF8574T/3 | 制造商:NXP Semiconductors 功能描述:I/O Expander 16-Pin SO 制造商:NXP Semiconductors 功能描述:I/O Expander 16-Pin SO Bulk 制造商:NXP Semiconductors 功能描述:I/O EXPANDER 8BIT REMOTE SO-16 制造商:NXP Semiconductors 功能描述:I/O EXPANDER, 8BIT REMOTE, SO-16 |
| PCF8574T/3,512 | 功能描述:I2C 接口集成電路 REMOTE I/O EXPANDER RoHS:否 制造商:NXP Semiconductors 電源電壓-最大:5.5 V 電源電壓-最小:2.3 V 最大工作頻率:400 KHz 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-16 |
| PCF8574T/3,518 | 功能描述:接口-I/O擴展器 I/O EXPANDER I2C RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
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