Three small parts quietly decide whether a board talks to the world and makes correct decisions: comparators turn thresholds into logic, analog switches route signals, and interface transceivers connect to a bus. This guide covers the COSINE (科山芯创) comparators, analog switches and interface parts we stock.
1. Comparators
Comparators give a fast, clean digital decision from an analogue threshold.
| Part | Notes | Link |
|---|---|---|
| LM393SR (LM193) | Comparator, dual | LM393SR (LM193) |
| COS3502SR (TLV3502) | High-speed comparator | COS3502SR (TLV3502) |
| COS3201TR (TLV3201) | High-speed comparator | COS3201TR (TLV3201) |
2. Analog switches and multiplexers
Analog switches route or isolate signal paths under logic control.
| Part | Notes | Link |
|---|---|---|
| COS3157ST (FAN3157) | Analog switch / multiplexer | COS3157ST (FAN3157) |
| COS12A12511 (TS12A12511) | Analog switch | COS12A12511 (TS12A12511) |
| COS5A23159 (TS5A23159) | Analog switch, dual | COS5A23159 (TS5A23159) |
3. Interface transceivers
Transceivers bridge chip logic to RS-232, CAN and similar buses.
| Part | Notes | Link |
|---|---|---|
| COSMAX3232ID (MAX3232) | RS-232 interface transceiver | COSMAX3232ID (MAX3232) |
| COS1042T (TJA1042) | CAN interface transceiver | COS1042T (TJA1042) |
| COS485RS (ADM4853) | RS-485 / RS-422 transceiver | COS485RS (ADM4853) |
Selection checklist
- For comparators, check propagation delay and the input range at your supplies.
- For analog switches, confirm on-resistance and the signal voltage it can pass.
- For transceivers, match the bus standard, data rate and fault protection.
- Confirm package and pinout against the referenced device before volume build.
See the wider interface and RF range. Send us your bus, speed and package for a quote.
Frequently asked questions
When do I use a comparator instead of an op-amp?
Use a comparator when the output should be a clean digital decision: over/under threshold, window detect, zero-crossing. Use an op-amp when you want a linear amplified signal. Running an op-amp open-loop as a comparator is slower and often poorly specified for the job.
What is an analog switch used for?
An analog switch connects or isolates a signal path under logic control — channel selection, fault isolation, calibration routing and muxing several sources into one converter. The key numbers are on-resistance, leakage and the signal range it can pass.
What does an interface transceiver do?
An interface transceiver converts between the chip's logic levels and a bus standard such as RS-232 or CAN, handling the voltage levels, slew rate and fault protection the bus demands. Match the transceiver to the bus, not just to the connector.
Are these COSINE parts drop-in replacements?
They are designed against the pinout and function of the referenced devices. Confirm package, pinout and electrical limits on the datasheet for your application before volume commitment.
About us & trademarks: JTDZ Tech (Shenzhen Jingteng Electronics Technology Co., Ltd.) is an independent distributor of electronic components. We are not an authorised distributor or representative of the manufacturers named in this article. Manufacturer and part names are used for indicative purposes only, to help identify the components discussed; all trademarks remain the property of their respective owners. Always verify specifications against the official datasheet before design-in or purchase.
Recommended next steps
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