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參數(shù)資料
| 型號(hào)： | MAX7326ATG+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 8/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC I/O EXPANDER I2C 16B 24TQFN |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 75 |
| 接口： | I²C |
| 輸入/輸出數(shù)： | 16 |
| 中斷輸出： | 是 |
| 頻率 - 時(shí)鐘： | 400kHz |
| 電源電壓： | 1.71 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-WFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 24-TQFN-EP（4x4） |
| 包裝： | 管件 |
| 包括： | POR |
MAX7326
I2C Port Expander with 12 Push-Pull Outputs
and 4 Inputs
16
______________________________________________________________________________________
Choose the resistor value according to the following
formula:
RLED = (VSUPPLY - VLED - VOL) / ILED
where:
RLED is the resistance of the resistor in series with the
LED ().
VSUPPLY is the supply voltage used to drive the LED (V).
VLED is the forward voltage of the LED (V).
VOL is the output low voltage of the MAX7326 when
sinking ILED (V).
ILED is the desired operating current of the LED (A).
For example, to operate a 2.2V red LED at 10mA from a
+5V supply:
RLED = (5 - 2.2 - 0.1) / 0.01 = 270
Driving Load Currents Higher than 20mA
The MAX7326 can be used to drive loads such as
relays that draw more than 20mA by paralleling out-
puts. Use at least one output per 20mA of load current;
for example, a 5V, 330mW relay draws 66mA and
therefore requires four paralleled outputs. Any combi-
nation of outputs can be used as part of a load-sharing
design, because any combination of ports can be set or
cleared at the same time by writing to the MAX7326. Do
not exceed a total sink current of 100mA for the device.
The MAX7326 must be protected from the negative-
voltage transient generated when switching off induc-
tive loads (such as relays) by connecting a
reverse-biased diode across the inductive load.
Choose the peak current for the diode to be greater
than the inductive load’s operating current.
Power-Supply Considerations
The MAX7326 operates with a supply voltage of
+1.71V to +5.5V over the -40°C to +125°C tempera-
ture range. Bypass the supply to GND with a ceramic
capacitor of at least 0.047F as close as possible to
the device. For the TQFN version, additionally connect
the exposed paddle to GND.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX7326ATG+ | 功能描述:接口-I/O擴(kuò)展器 I2C Port Expander w/12 P-P Out & 4 In 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 |
| MAX7326ATG+T | 功能描述:接口-I/O擴(kuò)展器 I2C Port Expander w/12 P-P Out & 4 In 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 |
| MAX7326ATG-T | 功能描述:接口-I/O擴(kuò)展器 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 |
| MAX7326EVCMAXQU+ | 功能描述:界面開發(fā)工具 MAX7326 Max7526 Kit RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評(píng)估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| MAX7326EVKIT+ | 功能描述:界面開發(fā)工具 MAX7326 Eval Kit RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評(píng)估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
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