LTC6995-1 / LTC6995-2 - TimerBlox：长时间定时器、低频振荡器
LTC®6995 是一款硅振荡器，具有一个 1.024ms 至 9.54 小时 (29.1μHz 至 977Hz) 的可编程周期范围，专供长持续时间定时过程之用。LTC6995 隶属于 TimerBlox® 通用型硅定时器件系列。
单个电阻器 RSET 负责设置 LTC6995 的内部主振荡器频率。输出时钟周期由该主振荡器和一个内部分频器 NDIV 来决定 (可编程至从 1 至 221 范围内的 8 个设定值)。
当振荡时，LTC6995 产生一个 50% 占空比的方波输出。该器件提供了一种复位功能，用以停止主振荡器并清零内部分频器。取消复位将启动一个完整的输出时钟周期，这适用于可编程上电复位和看门狗定时器应用。
LTC6995 具有两种复位功能版本。对于 LTC6995-1 复位输入为高电平有效，而对于 LTC6995-2 复位输入则为低电平有效。对于这两种器件版本，输出的极性在复位时都是可选的。
特点
典型应用 | 应用
封装信息  |
| 器件型号 | 封装 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) * |
|---|---|---|---|---|
| LTC6995CDCB-1#PBF | 2x3 DFN-6 | C | $1.88 | |
| LTC6995CDCB-1#TRMPBF | 2x3 DFN-6 | C | $1.88 | $1.40 |
| LTC6995CDCB-1#TRPBF | 2x3 DFN-6 | C | $1.35 | |
| LTC6995CDCB-2#PBF | 2x3 DFN-6 | C | $1.88 | |
| LTC6995CDCB-2#TRMPBF | 2x3 DFN-6 | C | $1.88 | $1.40 |
| LTC6995CDCB-2#TRPBF | 2x3 DFN-6 | C | $1.35 | |
| LTC6995CS6-1#PBF | SOT-23 | C | $1.88 | |
| LTC6995CS6-1#TRMPBF | SOT-23 | C | $1.88 | $1.40 |
| LTC6995CS6-1#TRPBF | SOT-23 | C | $1.35 | |
| LTC6995CS6-2#PBF | SOT-23 | C | $1.88 | |
| LTC6995CS6-2#TRMPBF | SOT-23 | C | $1.88 | $1.40 |
| LTC6995CS6-2#TRPBF | SOT-23 | C | $1.35 | |
| LTC6995HDCB-1#PBF | 2x3 DFN-6 | H | $2.63 | |
| LTC6995HDCB-1#TRMPBF | 2x3 DFN-6 | H | $2.63 | $1.94 |
| LTC6995HDCB-1#TRPBF | 2x3 DFN-6 | H | $1.89 | |
| LTC6995HDCB-2#PBF | 2x3 DFN-6 | H | $2.63 | |
| LTC6995HDCB-2#TRMPBF | 2x3 DFN-6 | H | $2.63 | $1.94 |
| LTC6995HDCB-2#TRPBF | 2x3 DFN-6 | H | $1.89 | |
| LTC6995HS6-1#PBF | SOT-23 | H | $2.63 | |
| LTC6995HS6-1#TRMPBF | SOT-23 | H | $2.63 | $1.94 |
| LTC6995HS6-1#TRPBF | SOT-23 | H | $1.89 | |
| LTC6995HS6-2#PBF | SOT-23 | H | $2.63 | |
| LTC6995HS6-2#TRMPBF | SOT-23 | H | $2.63 | $1.94 |
| LTC6995HS6-2#TRPBF | SOT-23 | H | $1.89 | |
| LTC6995IDCB-1#PBF | 2x3 DFN-6 | I | $2.16 | |
| LTC6995IDCB-1#TRMPBF | 2x3 DFN-6 | I | $2.16 | $1.60 |
| LTC6995IDCB-1#TRPBF | 2x3 DFN-6 | I | $1.55 | |
| LTC6995IDCB-2#PBF | 2x3 DFN-6 | I | $2.16 | |
| LTC6995IDCB-2#TRMPBF | 2x3 DFN-6 | I | $2.16 | $1.60 |
| LTC6995IDCB-2#TRPBF | 2x3 DFN-6 | I | $1.55 | |
| LTC6995IS6-1#PBF | SOT-23 | I | $2.16 | |
| LTC6995IS6-1#TRMPBF | SOT-23 | I | $2.16 | $1.60 |
| LTC6995IS6-1#TRPBF | SOT-23 | I | $1.55 | |
| LTC6995IS6-2#PBF | SOT-23 | I | $2.16 | |
| LTC6995IS6-2#TRMPBF | SOT-23 | I | $2.16 | $1.60 |
| LTC6995IS6-2#TRPBF | SOT-23 | I | $1.55 | |
| LTC6995MPS6-1#PBF | SOT-23 | MP | $5.64 | |
| LTC6995MPS6-1#TRMPBF | SOT-23 | MP | $5.64 | $4.10 |
| LTC6995MPS6-1#TRPBF | SOT-23 | MP | $4.05 | |
| LTC6995MPS6-2#PBF | SOT-23 | MP | $5.64 | |
| LTC6995MPS6-2#TRMPBF | SOT-23 | MP | $5.64 | $4.10 |
| LTC6995MPS6-2#TRPBF | SOT-23 | MP | $4.05 |
演示电路板
| 器件型号 | 描述 | 价格 |
|---|---|---|
| DC1562B-M | LTC6995-1: 1sec Power-on Reset (-1 Device with Active High Reset Input) | $25.00 |
| DC1562B-N | LTC6995-2: 1sec Power-on Reset (-2 Device with Active Low Reset Input) | $25.00 |
