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参数资料
| 型号： | MAX4822ETP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/19页 |
| 文件大小： | 0K |
| 描述： | IC RELAY DRIVER 8CHAN 20-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 继电器/灯驱动器 |
| 输入类型： | 串行 |
| 输出数： | 8 |
| 导通状态电阻： | 2.7 欧姆 |
| 电流 - 输出 / 通道： | 70mA |
| 电流 - 峰值输出： | 150mA |
| 电源电压： | 2.3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WFQFN 裸露焊盘 |
| 供应商设备封装： | 20-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
+3.3V/+5V, 8-Channel Relay Drivers with Fast
Recovery Time and Power-Save Mode
MAX4822/MAX4823 Pin Description
PIN
MAX4822
MAX4823
NAME
FUNCTION
Reset Input. Drive RESET low to clear all latches and registers (all outputs are high
1
1
RESET
impedance). RESET overrides all other inputs. If RESET and SET are pulled low at the
same time, then RESET takes precedence.
Chip-Select Input. Drive CS low to select the device. When CS is low, data at DIN is
2
2
CS
clocked into the shift register on SCLK’s rising edge. Drive CS from low to high to latch
the data to the registers and activate the relay outputs.
3
4
3
4
DIN
SCLK
Serial Data Input
Serial Clock Input
Serial Data Output. DOUT is the output of the shift register. DOUT can be used to daisy-
5
5
DOUT
chain multiple MAX4822/MAX4823 devices. The data at DOUT appears synchronous to
SCLK’s falling edge.
6
7
8
9
10, 16
11
12
6, 13
7
8
9
10, 16
11
12
N.C.
GND
OUT8
OUT7
PGND
OUT6
OUT5
No Connection. Not internally connected.
Ground
Open-Drain Output 8. Connect OUT8 to the low side of a relay coil. This output is pulled
to PGND when activated, but otherwise is high impedance.
Open-Drain Output 7. Connect OUT7 to the low side of a relay coil. This output is pulled
to PGND when activated, but otherwise is high impedance.
Power Ground. PGND is a return for the output sinks. Connect PGND pins together and
to GND.
Open-Drain Output 6. Connect OUT6 to the low side of a relay coil. This output is pulled
to PGND when activated, but otherwise is high impedance.
Open-Drain Output 5. Connect OUT5 to the low side of a relay coil. This output is pulled
to PGND when activated, but otherwise is high impedance.
Power-Save Control. Connect a timing capacitor from PSAVE to ground. The capacitor
value determines power-save timing as explained under the Applications Information
13
—
PSAVE
section. PSAVE can also be driven externally to control power-save mode
asynchronously. When asserted high, PSAVE reduces the current to all active outputs as
determined by the Power-Save Configuration Register (see Figure 1). To disable power-
save mode in all channels, drive PSAVE low for at least 3ms after the last output setting.
14
15
17
18
14
15
17
18
OUT4
OUT3
OUT2
OUT1
Open-Drain Output 4. Connect OUT4 to the low side of a relay coil. This output is pulled
to PGND when activated, but otherwise is high impedance.
Open-Drain Output 3. Connect OUT3 to the low side of a relay coil. This output is pulled
to PGND when activated, but otherwise is high impedance.
Open-Drain Output 2. Connect OUT2 to the low side of a relay coil. This output is pulled
to PGND when activated, but otherwise is high impedance.
Open-Drain Output 1. Connect OUT1 to the low side of a relay coil. This output is pulled
to PGND when activated, but otherwise is high impedance.
_______________________________________________________________________________________
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