TS331IYLT

Overview

The TS331IYLT is a single-channel micropower low-voltage analog comparator manufactured by STMicroelectronics. It operates within a supply voltage range of 1.6 V to 5 V and features rail-to-rail inputs, making it suitable for low-voltage applications. The device exhibits a typical current consumption of 20 μA and an open-drain output type. Key electrical parameters include a propagation delay of 210 ns, an input offset voltage of 5 mV at 5 V, and an input bias current of 40 nA at 5 V. It provides a common-mode rejection ratio (CMRR) of 79 dB and supports an output current of up to 22 mA per channel. The component is specified for operation across a wide temperature range from -40 °C to +125 °C and is housed in a SOT-23-5 surface-mount package.

Feature Summary

• Rail-to-rail input capability enables accurate signal detection in low-voltage systems.
• Micropower design with low current consumption optimizes energy efficiency.
• Automotive qualification ensures reliability under demanding environmental conditions.

Applications

• Personal electronic devices
• Battery-powered instrumentation
• Temperature sensing circuits

Procurement Notes

Verify the specific suffix 'IYLT' against the manufacturer's official datasheet to confirm the exact package variant and automotive grade status. Ensure compatibility with the required SOT-23-5 footprint during PCB layout. Confirm that the open-drain output configuration aligns with the system's pull-up requirements. Validate that the operating voltage range meets the application's power supply specifications.

Selection Notes

Select this component when space constraints require a tiny SMD package alongside low power consumption needs. The rail-to-rail input feature is critical for maximizing dynamic range in single-supply low-voltage designs. Consider the open-drain output topology if level shifting or wired-OR logic is required. Verify that the 210 ns propagation delay meets the timing requirements of the target application.

Part Context

The TS331IYLT belongs to the TS33x family of micropower comparators, which includes dual (TS332) and quad (TS334) variants. This family shares core architectural features such as low voltage operation and rail-to-rail inputs. The 'I' designation typically indicates the industrial temperature range extension, while 'YL' specifies the SOT-23-5 package and tape-and-reel packaging format.

Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include the TS331ILT from STMicroelectronics. Other potential alternatives found in distributor listings include LMV7275MF series parts from Texas Instruments, though direct functional equivalence should be verified against specific application requirements.