參數(shù)資料
型號： PCA9538D,118
廠商： NXP Semiconductors
文件頁數(shù)： 5/34頁
文件大?。?/td> 0K
描述： IC I/O EXPANDER I2C 8B 16SOIC
產(chǎn)品培訓(xùn)模塊： I²C Bus Fundamentals
特色產(chǎn)品： NXP - I2C Interface
標(biāo)準(zhǔn)包裝： 1
接口： I²C，SM 總線
輸入/輸出數(shù)： 8
中斷輸出： 是
頻率 - 時鐘： 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： 16-SOIC（0.295"，7.50mm 寬）
供應(yīng)商設(shè)備封裝： 16-SO
包裝： 標(biāo)準(zhǔn)包裝
包括： POR
其它名稱： 568-1839-6
PCA9538
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 6 — 6 February 2013
13 of 34
NXP Semiconductors
PCA9538
8-bit I2C-bus and SMBus low power I/O port with interrupt and reset
7.1 Minimizing IDD when the I/Os are used to control LEDs
When the I/Os are used to control LEDs, they are normally connected to VDD through a
resistor as shown in Figure 11. Since the LED acts as a diode, when the LED is off the
I/O VI is about 1.2 V less than VDD. The supply current, IDD, increases as VI becomes
lower than VDD.
Designs needing to minimize current consumption, such as battery power applications,
should consider maintaining the I/O pins greater than or equal to VDD when the LED is off.
Figure 12 shows a high value resistor in parallel with the LED. Figure 13 shows VDD less
than the LED supply voltage by at least 1.2 V. Both of these methods maintain the I/O VI
at or above VDD and prevents additional supply current consumption when the LED is off.
8.
Limiting values
Fig 12. High value resistor in parallel with
the LED
Fig 13. Device supplied by a lower voltage
002aac660
LED
VDD
IOn
100 k
Ω
VDD
002aac661
LED
VDD
IOn
3.3 V
5 V
Table 9.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
Parameter
Conditions
Min
Max
Unit
VDD
supply voltage
0.5
+6.0
V
II
input current
-
20
mA
VI/O
voltage on an input/output pin
VSS 0.5
5.5
V
IO(IOn)
output current on pin IOn
-
50
mA
IDD
supply current
-
85
mA
ISS
ground supply current
-
100
mA
Ptot
total power dissipation
-
200
mW
Tstg
storage temperature
65
+150
C
Tamb
ambient temperature
operating
all devices except PCA9538PW/Q900
40
+85
C
PCA9538PW/Q900
40
+125
C
Tj(max)
maximum junction temperature
-
+125
C
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參數(shù)描述
PCA9538DB 功能描述:接口-I/O擴(kuò)展器 Rem 8B I2C & SMBus Lo-Pwr I/O Expander RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)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(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA9538DBG4 功能描述:接口-I/O擴(kuò)展器 Rem 8B I2C & SMBus Lo-Pwr I/O Expander RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)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(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA9538DBQR 制造商:TI 制造商全稱:Texas Instruments 功能描述:REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS
PCA9538DBR 功能描述:接口-I/O擴(kuò)展器 Rem 8B I2C & SMBus Lo-Pwr I/O Expander RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)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(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA9538DBRG4 功能描述:接口-I/O擴(kuò)展器 Rem 8B I2C & SMBus Lo-Pwr I/O Expander RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)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(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
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