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| 型号： | CAT140049SWI-GT3 |
| 厂商： | ON Semiconductor |
| 文件页数： | 5/14页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR I2C EEPROM 8SOIC |
| 标准包装： | 3,000 |
| 类型： | 简单复位/加电复位 |
| 监视电压数目： | 1 |
| 输出： | 推挽式，图腾柱 |
| 复位： | 低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 2.93V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
| 其它名称： | 140049SWI-GT3 |
CAT140xx
PIN DESCRIPTION
ˉˉˉˉˉˉ
RESET/ RESET : RESET OUTPUT
This output is available in two versions: CMOS
Active Low (CAT140xx9) and CMOS Active High
(CAT140xx1). Both versions are push-pull outputs
for high efficiency.
SDA: SERIAL DATA ADDRESS
The Serial Data I/O pin receives input data and
transmits data stored in EEPROM. In transmit mode,
this pin is open drain. Data is acquired on the
positive edge, and is delivered on the negative edge
of SCL.
SCL: SERIAL CLOCK
The Serial Clock input pin accepts the Serial Clock
generated by the Master.
A0, A1, A2: Device Address Inputs
The Address inputs set the device address when
cascading multiple devices. When not driven, these
pins are pulled LOW internally.
DEVICE OPERATION
The CAT140xx products combine the accurate
voltage monitoring capabilities of a standalone
voltage supervisor with the high quality and reliability
of standard EEPROMs from Catalyst Semiconductor.
RESET CONTROLLER DESCRIPTION
The reset signal is asserted LOW for the CAT140xx9
and HIGH for the CAT140xx1 when the power
supply voltage falls below the threshold trip voltage
V TH
V CC
V RVALID
and remains asserted for at least 140ms (t PURST ) after
the power supply voltage has risen above the threshold.
Reset output timing is shown in Figure 1.
The CAT140xx devices protect μ Ps against brownout
failure. Short duration V CC transients of 4 μ sec or less
and 100mV amplitude typically do not generate a Reset
pulse.
Figure 2 shows the maximum pulse duration of negative-
going V CC transients that do not cause a reset condition.
As the amplitude of the transient goes further below the
threshold (increasing V TH - V CC ), the maximum pulse
duration decreases. In this test, the V CC starts from
an initial voltage of 0.5V above the threshold and
drops below it by the amplitude of the overdrive voltage
(V TH - V CC ).
T AMB = 25oC
CAT140xxZ
CAT140xxM
RESET OVERDRIVE V TH - V CC [mV]
Figure 2. Maximum Transient Duration Without
Causing a Reset Pulse vs. Overdrive Voltage
RESE T
RESE T
t PURST
t RPD
t PURST
t RPD
CAT140xx9
CAT140xx1
Figure 1. RESET Output Timing
? 2008 SCILLC. All rights reserved.
Characteristics subject to change without notice
5
Doc. No. MD-1117 Rev. B
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CAT140049TWI-GT3 | 功能描述:监控电路 w/8k I2C RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| CAT140089MWI-GT3 | 功能描述:监控电路 w/8k I2C RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| CAT140089SWGI | 制造商:Rochester Electronics LLC 功能描述: 制造商:Catalyst Semiconductor 功能描述: |
| CAT140089SWI-G | 功能描述:监控电路 2.93V, 8K EEPROM, Active Low RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| CAT140089SWI-GT3 | 功能描述:监控电路 w/8k I2C RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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