# RC Oscillator (Component) ## Description The MIC1557 is designed for astable (oscillator) operation with a chip select/reset (CS) input for low power shut-down. ## Component Details - **Owner:** corynrobinson - **Created:** 12/30/2021 - **Last Updated:** 12/23/2025 - **Visibility:** Public - **Package or Case Code:** SOT-23 - **Part Type:** Oscillator - **Purchase Url:** https://octopart.com/mic1557ym5-tr-microchip-66800156 - **Manufacturer Part Number:** MIC1557YM5-TR - **Datasheet URL:** https://ww1.microchip.com/downloads/en/DeviceDoc/MIC1555-57-IttyBitty-RC-Timer-Oscillator-DS20005730B.pdf - **Manufacturer Name:** Microchip - **Product Info Url:** https://www.microchip.com/en-us/product/MIC1557# - **Used in:** 3 projects - **Stars:** 1 ## Distributor Pricing (qty 1) *Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.* | Distributor | Unit Price (qty 1) | Stock | |------------|--------------------|-------| | [Arrow](https://www.arrow.com/en/products/mic1557ym5-tr/microchip-technology?utm_currency=USD&region=europe) | N/A | N/A | | [Digi-Key](https://www.digikey.com/en/products/detail/microchip-technology/MIC1557YM5-TR/771524) | $1.38 | 16K | | [LCSC](https://www.lcsc.com/product-detail/C144169.html) | $1.1437 | 40 | | [Mouser](https://www.mouser.com/ProductDetail/Microchip-Technology/MIC1557YM5-TR?qs=Y3Q3JoKAO1RdGx3BXrhjHA%3D%3D) | $0.47 | 12K | | [TME](https://www.tme.com/us/en-us/katalog/?queryPhrase=MIC1557YM5-TR) | $0.80 | 3K | | [Verical](https://www.verical.com/pd/microchip-technology-timer-MIC1557YM5-TR-89293?utm_currency=USD) | N/A | N/A | - **Part Type:** Crystals and Oscillators - **Manufacturer:** Microchip - **MPN:** MIC1557YM5-TR - **Package / Case Code:** SOT-23 - **Pin Count:** 5 ## Pins | Pin | Name | Type | |-----|------|------| | 1 | T/T | | | 2 | GND | | | 3 | CS | | | 4 | VS | | | 5 | OUT | | --- *Generated from [https://www.flux.ai/corynrobinson/rc-oscillator~5o](https://www.flux.ai/corynrobinson/rc-oscillator~5o)*