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Product Detailed Parameters
- Description：IC COMPARATOR 2 GEN PUR 8SO
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Type：General Purpose
- Number of Elements：2
- Output Type：Pull Up
- Voltage - Supply, Single/Dual (±)：1.1V ~ 40V, ±0.55V ~ 20V
- Voltage - Input Offset (Max)：1mV @ ±20V
- Current - Input Bias (Max)：0.075µA @ ±20V
- Current - Output (Typ)：70mA @ 4.5V
- Current - Quiescent (Max)：250µA
- CMRR, PSRR (Typ)：115dB CMRR, 110dB PSRR
- Propagation Delay (Max)：6µs
- Hysteresis：-
- Operating Temperature：0°C ~ 70°C
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：8-SO
- Grade：-
- Qualification：-
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Overview
The LT1018CS8#PBF is a micropower dual comparator in an 8-lead plastic SO package. It operates from a single supply of 1.1V to 40V. The device features a class B pull-up current source, eliminating the need for external resistive pull-ups. Electrical characteristics include a maximum offset voltage of 1mV and a maximum bias current of 15nA. Typical output drive capability is 70mA. Supply current is 110µA at 5V. The common mode voltage range includes ground.
Feature Summary
- Internal Class B pull-up current source eliminates external resistors
- Output stage drives loads connected to supplies more positive than V+
- On-chip trimming minimizes offset voltage and input referred errors
- Special circuitry prevents false output states during input overdrive
Applications
- Power supply monitors
- Relay driving circuits
- Oscillators
Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence as per manufacturer standards. Confirm the S8 designation corresponds to the 8-lead Plastic Small Outline package. Ensure the C grade temperature rating matches the intended operational environment requirements before finalizing procurement specifications.
Selection Notes
Select this component when higher speed performance relative to the LT1017 is required while maintaining low power consumption. The internal pull-up feature simplifies design by removing external components. Verify that the 110µA supply current meets system power budgets compared to lower-power alternatives like the LT1017.
Part Context
This part belongs to the LT1017/LT1018 family of general-purpose micropower comparators. While pin-compatible with older dual comparators such as 393 type devices, it offers improved electrical specifications including lower offset voltage and bias current. The LT1018 variant specifically targets applications requiring faster response times than the LT1017.
Replacement Considerations
LT1017CN8#PBF
FAQ
Does the output stage require an external pull-up resistor?
No, the internal Class B pull-up current source eliminates the need for an external resistive pull-up.
Can the output drive loads connected to a voltage higher than V+?
Yes, the output stage is designed to allow driving loads connected to a supply more positive than the device's V+.
