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Comments on Interfacing sensor with TTL output with Microcontroller

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Interfacing sensor with TTL output with Microcontroller

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I need to interface a radiation sensor (BG51 by Teviso Sensor Technologies) with TTL output with a CC1352P microcontroller.

May I know how to approach this.

block diagram from the BG51 datasheet

microcontroller ADC
posted 12 months ago
12mo ago by Nick Alexeev‭
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The datasheet for the radiation sensor (BG51) doesn’t specify the logic output levels. (4 comments)
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"TTL Std." means input threshold is 1.3V and output levels are 0.8 max ("0") and 2.0V min ("1"). This is directly compatible with all 3.6V logic including your CPU. This is like HV CMOS CD4xxx series that uses Vdd to drive Voh ("1").

posted 5 months ago
5mo ago
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TonyStewart‭
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Usage of TTL has gotten sloppy. (1 comment)
Usage of TTL has gotten sloppy.
Olin Lathrop‭ wrote 5 months ago
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Yes, that's what "TTL standard" means. However, nowadays "TTL" gets thrown around carelessly, sometimes only to mean a digital signal. You are technically right (+1), but it is still prudent to check the datasheet to make sure what the vendor really means by "TTL", or even "TTL levels".