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MAX4820

更新时间： 2024-12-02 14:58:03
品牌 Logo 应用领域
亚德诺 - ADI 驱动继电器驱动器
页数 文件大小 规格书
12页 359K
描述
+3.3V/+5V、8通道、可级联的继电器驱动器，具有串行/并行接口

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MAX4820 数据手册

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MAX4820/MAX4821  
+3.3V/+5V, 8-Channel, Cascadable Relay Drivers  
with Serial/Parallel Interface  
General Description  
Features  
The MAX4820/MAX4821 8-channel relay drivers offer  
built-in kickback protection and drive +3.3V/+5V non-  
latching or dual-coil-latching relays. These devices are  
especially useful when driving +3V relays. Each inde-  
pendent open-drain output features a 2Ω on-resistance  
and is guaranteed to sink 70mA (min) of load current.  
Both devices consume less than 50µA (max) quiescent  
current and have 1µA output off-leakage current.  
♦ 8 Independent Output Channels  
♦ Built-In Inductive Kickback Protection  
♦ Drive +3V and +5V Relays  
♦ Guaranteed 70mA (min) Coil Drive Current  
♦ SET Function to Turn On All Outputs  
Simultaneously  
The MAX4820 features an SPI™-/QSPI™-/MICROWIRE™-  
compatible serial interface. Input data is shifted into an 8-  
bit shift register and latched to the outputs when CS  
transitions from low to high. Each data bit in the shift reg-  
ister corresponds to a specific output, allowing indepen-  
dent control of all outputs.  
♦ RESET Function to Turn Off All Outputs  
Simultaneously  
♦ SPI-/QSPI-/MICROWIRE-Compatible Serial  
Interface (MAX4820)  
♦ Serial Digital Output for Daisy Chaining  
The MAX4821 features a 4-bit (A0, A1, A2, LVL) paral-  
lel-input interface. The first three bits (A0, A1, A2) deter-  
mine the output address, and the fourth bit (LVL)  
determines whether the selected output is switched on  
or off. Data is latched to the outputs when CS transi-  
tions from low to high.  
(MAX4820)  
♦ Parallel Interface (MAX4821)  
♦ Low 50µA (max) Quiescent Supply Current  
♦ Space-Saving 20-Pin Thin QFN Package  
Both devices feature separate set and reset functions  
that allow the user to turn on or turn off all outputs simul-  
taneously with a single control line. Built-in hysteresis  
(Schmidt trigger) on all digital inputs allows this device  
to be used with slow rising and falling signals, such as  
those from optocouplers or RC power-up initialization  
circuits. The MAX4820/MAX4821 are available in 20-pin  
TSSOP and space-saving 20-pin Thin QFN packages.  
Ordering Information  
PART  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
20 Thin QFN-EP*  
20 TSSOP-EP*  
MAX4820ETP+  
MAX4820EUP+  
MAX4821ETP+  
MAX4821EUP+  
20 Thin QFN-EP*  
20 TSSOP-EP*  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
*EP = Exposed pad.  
Applications  
Central Office  
Pin Configurations  
ATE  
TOP VIEW  
DSL, ADSL Line Cards  
Industrial Equipment  
E1/T1 Redundancy  
+
RESET  
1
2
3
4
5
15 OUT3  
14 OUT4  
13 COM  
12 OUT5  
CS  
DIN  
MAX4820  
Pin Configurations continued at end of data sheet.  
SCLK  
DOUT  
Typical Application Circuits and Functional Diagrams  
appear at end of data sheet.  
*EP  
11  
OUT6  
THIN QFN  
SPI and QSPe trademarks of Motorola, Inc.  
*CONNECT EP TO GND.  
MICROWIRE is a trademark of National Semiconductor Corp.  
For pricing, delivery, and ordering information, please contact Maxim Direct  
19-2751; Rev 2; 1/10  
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.  
1234567...12

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与MAX4820相关器件

型号 品牌 获取价格 描述 数据表
MAX4820_09 MAXIM

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 		+3.3V/+5V, 8-Channel, Cascadable Relay Drivers with Serial/Parallel Interface
MAX4820_10 MAXIM

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 		+3.3V/+5V, 8-Channel, Cascadable Relay Drivers with Serial/Parallel Interface
MAX4820ETP MAXIM

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 		+3.3V/+5V, 8-Channel, Cascadable Relay Drivers with Serial/Parallel Interface
MAX4820ETP+ MAXIM

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 		+3.3V/+5V, 8-Channel, Cascadable Relay Drivers with Serial/Parallel Interface
MAX4820ETP+T MAXIM

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 		Buffer/Inverter Based Peripheral Driver, 8 Driver, BICMOS, 4 X 4 MM, 0.80 MM PITCH, MO-220
MAX4820ETP-T MAXIM

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 		暂无描述
MAX4820EUP MAXIM

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 		+3.3V/+5V, 8-Channel, Cascadable Relay Drivers with Serial/Parallel Interface
MAX4820EUP+ MAXIM

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 		+3.3V/+5V, 8-Channel, Cascadable Relay Drivers with Serial/Parallel Interface
MAX4820EUP+T MAXIM

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 		暂无描述
MAX4820EUP-T MAXIM

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 		Buffer/Inverter Based Peripheral Driver, 8 Driver, 0.07A, BICMOS, PDSO20, 4.40 MM, MO-153A

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