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UCC3946 带看门狗定时器的微处理器监控器

UCC3946 描述

The UCCx946 is designed to provide accurate microprocessor supervision, including reset and watchdog functions. During power up, the device asserts a reset signal RES with VDD as low as 1 V. The reset signal remains asserted until the VDD voltage rises and remains above the reset threshold for the reset period. Both reset threshold and reset period are programmable by the user. The UCCx946 is also resistant to glitches on the VDD line. Once RES has been deasserted, any drops below the threshold voltage need to be of certain time duration and voltage magnitude to generate a reset signal. These values are shown in Figure 1. An I/O line of the microprocessor may be tied to the watchdog input (WDI) for watchdog functions

UCC2946 UCC3946
No. of Supervisors 1 1
Reset Threshold Accuracy(%) 2 2
Time Delay(ms) Prog Prog
IDD(Typ)(uA) 10 10
Pin/Package 8SOIC, 8TSSOP 8PDIP, 8SOIC, 8TSSOP
Rating Catalog Catalog
UCC3946 特性
UCC3946 芯片订购指南
器件 状态 温度 (oC) 价格(美元) 封装 | 引脚 封装数量 | 封装载体 丝印标记
UCC3946D ACTIVE -40 to 85 1.60 | 1ku SOIC (D) | 8 75 | TUBE UCC3946
UCC3946DG4 ACTIVE -40 to 85 1.60 | 1ku SOIC (D) | 8 75 | TUBE UCC3946
UCC3946DTR ACTIVE -40 to 85 1.35 | 1ku SOIC (D) | 8 2500 | LARGE T&R UCC3946
UCC3946DTRG4 ACTIVE -40 to 85 1.35 | 1ku SOIC (D) | 8 2500 | LARGE T&R UCC3946
UCC3946PW ACTIVE -40 to 85 1.65 | 1ku TSSOP (PW) | 8 150 | TUBE 3946
UCC3946PWG4 ACTIVE -40 to 85 1.65 | 1ku TSSOP (PW) | 8 150 | TUBE 3946
UCC3946PWTR ACTIVE -40 to 85 1.40 | 1ku TSSOP (PW) | 8 2000 | LARGE T&R 3946
UCC3946PWTRG4 ACTIVE -40 to 85 1.40 | 1ku TSSOP (PW) | 8 2000 | LARGE T&R 3946
UCC3946 质量与无铅数据
器件 环保计划* 铅/焊球涂层 MSL 等级/回流焊峰 环保信息与无铅 (Pb-free) DPPM / MTBF / FIT 率
UCC3946D Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR UCC3946D UCC3946D
UCC3946DG4 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR UCC3946DG4 UCC3946DG4
UCC3946DTR Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR UCC3946DTR UCC3946DTR
UCC3946DTRG4 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR UCC3946DTRG4 UCC3946DTRG4
UCC3946PW Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR UCC3946PW UCC3946PW
UCC3946PWG4 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR UCC3946PWG4 UCC3946PWG4
UCC3946PWTR Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR UCC3946PWTR UCC3946PWTR
UCC3946PWTRG4 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR UCC3946PWTRG4 UCC3946PWTRG4
UCC3946 应用技术支持与电子电路设计开发资源下载
  1. UCC3946 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器监控电路(电压监控器)产品选型与价格 . xls
UCC3946 相关工具
名称 型号 公司 工具/软件类型
UCC3946 评估模块 UCC3946EVM Texas Instruments 开发电路板/EVM