參數(shù)資料
型號(hào): PCA8574TS,118
廠商: NXP Semiconductors
文件頁(yè)數(shù): 8/32頁(yè)
文件大小: 0K
描述: IC I/O EXPANDER I2C 8B 20SSOP
特色產(chǎn)品: NXP - I2C Interface
標(biāo)準(zhǔn)包裝: 1
接口: I²C
輸入/輸出數(shù): 8
中斷輸出:
頻率 - 時(shí)鐘: 400kHz
電源電壓: 2.3 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-LSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 20-SSOP
包裝: 標(biāo)準(zhǔn)包裝
包括: POR
其它名稱: 568-8700-6
PCA8574_PCA8574A
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 3 — 3 June 2013
16 of 32
NXP Semiconductors
PCA8574; PCA8574A
Remote 8-bit I/O expander for I2C-bus with interrupt
13. Static characteristics
[1]
The power-on reset circuit resets the I2C-bus logic with VDD <VPOR and sets all I/Os to logic 1 (with current source to VDD).
[2]
Each bit must be limited to a maximum of 25 mA and the total package limited to 200 mA due to internal busing limits.
[3]
The value is not tested, but verified on sampling basis.
Table 9.
Static characteristics
VDD = 2.3 V to 5.5 V; VSS =0V; Tamb = 40 Cto+85 C; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Supplies
VDD
supply voltage
2.3
-
5.5
V
IDD
supply current
Operating mode; no load;
VI =VDD or VSS; fSCL = 400 kHz;
A0, A1, A2 = static H or L
-
200
500
A
Istb
standby current
Standby mode; no load;
VI =VDD or VSS; fSCL = 0 kHz
-4.5
10
A
VPOR
power-on reset voltage
[1] -1.8
2.0
V
Input SCL; input/output SDA
VIL
LOW-level input voltage
0.5
-
+0.3VDD
V
VIH
HIGH-level input voltage
0.7VDD
-5.5
V
IOL
LOW-level output current
VOL =0.4 V; VDD =2.3 V
20
35
-
mA
VOL =0.4 V; VDD =3.0 V
25
44
-
mA
VOL =0.4 V; VDD =4.5 V
30
57
-
mA
IL
leakage current
VI =VDD or VSS
1-
+1
A
Ci
input capacitance
VI =VSS
-
5
10
pF
I/Os; P0 to P7
VIL
LOW-level input voltage
0.5
-
+0.3VDD
V
VIH
HIGH-level input voltage
0.7VDD
-5.5
V
IOL
LOW-level output current
VOL =0.5 V; VDD =2.3 V
26
-
mA
VOL =0.5 V; VDD =3.0 V
33
-
mA
VOL =0.5 V; VDD =4.5 V
40
-
mA
IOL(tot)
total LOW-level output current
VOL =0.5 V; VDD =4.5 V
200
mA
IOH
HIGH-level output current
VOH =VSS
30
138
300
A
Itrt(pu)
transient boosted pull-up current VOH =VSS; see Figure 8
0.5
1.0
-
mA
Ci
input capacitance
2.1
10
pF
Co
output capacitance
2.1
10
pF
Interrupt INT (see Figure 8 and Figure 9)
IOL
LOW-level output current
VOL =0.4 V
3.0
-
mA
Co
output capacitance
-
3
5
pF
Inputs A0, A1, A2
VIL
LOW-level input voltage
0.5
-
+0.3VDD
V
VIH
HIGH-level input voltage
0.7VDD
-5.5
V
ILI
input leakage current
1-
+1
A
Ci
input capacitance
-
3.5
5
pF
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