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参数资料
| 型号： | MAX6874ETJ+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 36/40页 |
| 文件大小： | 0K |
| 描述： | IC SEQUENCE/SUPERVISOR 32TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 序列发生器 |
| 监视电压数目： | 6 |
| 输出： | 开路漏极，推挽式 |
| 复位： | 高有效/低有效 |
| 复位超时： | 可调节/可选择 |
| 电压 - 阀值： | 8 种可选阀值组合 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
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EEPROM-Programmable, Hex/Quad,
Power-Supply Sequencers/Supervisors
4) Any attempt to communicate with the device prior to
this download completion results in a NACK being
issued from the MAX6874/MAX6875.
Forcing Programmable
Outputs High During Power-Up
A weak 10μA pulldown holds all programmable outputs
low during power-up until ABP exceeds the undervolt-
age lockout (UVLO) threshold. Applications requiring a
guaranteed high programmable output for ABP down to
GND require external pullup resistors to maintain the
logic state until ABP exceeds UVLO. Use 20k ? resis-
tors for most applications.
Uses for General-Purpose
Inputs (GPI1–GPI4)
Watchdog Timer
Program GPI_ as an input to the watchdog timer in the
MAX6874/MAX6875. The GPI_ input must toggle within
the watchdog timeout period, otherwise any program-
mable output dependent on the watchdog timer
asserts.
Additional Manual Reset Functions
Program PO7 (MAX6874)/PO5 (MAX6875) to depend
on one of the GPI_ inputs. Any output that depends on
GPI_ asserts when GPI_ is held in its active state, effec-
tively acting as a manual reset input.
Other Fault Signals from μC
Connect a general-purpose output from a μC to one of
the GPI_ inputs to allow interrupts to assert any output
of the MAX6874/MAX6875. Configure one of the pro-
grammable outputs to assert on whichever GPI_ input
connects to the general purpose output of the μC.
Layout and Bypassing
For better noise immunity, bypass each of the voltage
detector inputs to GND with 0.1μF capacitors installed
as close to the device as possible. Bypass ABP and
DBP to GND with 1μF capacitors installed as close to
the device as possible. ABP and DBP are internally
generated voltages and should not be used to supply
power to external circuitry.
Configuration Latency Period
A delay of less than 5μs occurs between writing to the
configuration registers and the time when these
changes actually take place, except when changing
one of the voltage-detector thresholds. Changing a
voltage-detector threshold typically takes 150μs. When
changing EEPROM contents, a software reboot or
cycling of power is required for these changes to trans-
fer to volatile memory.
Chip Information
PROCESS: BiCMOS
36
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6874TCC+ | 制造商:Maxim Integrated Products 功能描述: |
| MAX6875ETJ | 功能描述:监控电路 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 |
| MAX6875ETJ+ | 功能描述:监控电路 EEPROM-Prog Quad Power-Sup Sequencer 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 |
| MAX6875ETJ+T | 功能描述:监控电路 EEPROM-Prog Quad Power-Sup Sequencer 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 |
| MAX6875ETJ-T | 功能描述:监控电路 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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