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Product Detailed Parameters
- Description：IC COMPARATOR 2 GEN PUR 8DIP
- 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-DIP (0.300", 7.62mm)
- Mounting Type：Through Hole
- Supplier Device Package：8-PDIP
- Grade：-
- Qualification：-
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Overview
The LT1018CN8#PBF is a dual micropower comparator in an 8-lead PDIP package. It operates from a single supply of 1.1V to 40V. The device features a class B pull-up current source output stage, eliminating the need for external resistive pull-ups. Electrical specifications include a maximum offset voltage of 1mV and a maximum bias current of 15nA. Typical output drive capability is 70mA. Supply current is 110µA. The common mode voltage range includes ground.
Feature Summary
- Internal Class B pull-up current source eliminates external resistors
- On-chip trimming minimizes input offset voltage
- Output can drive loads connected to a supply more positive than V+
- Special circuitry prevents false output states during input overdrive
Applications
- Power supply monitors
- Relay driving
- Oscillators
Procurement Notes
Verify the component matches the Analog Devices LT1018CN8#PBF designation. Confirm the 8-pin PDIP physical form factor. Ensure the operating temperature range aligns with commercial grade requirements. Check datasheet limits against specific circuit conditions.
Selection Notes
Select this part when higher speed is required compared to the LT1017 variant. The internal pull-up simplifies design by removing external components. Verify that the 70mA sink current meets load requirements. Ensure the 1.1V minimum supply voltage suits the application power rails.
Part Context
This component belongs to the LT1017/LT1018 family of general-purpose micropower comparators. It is pin-compatible with older dual comparator types such as the 393 series. The LT1018 offers higher speed performance relative to the LT1017 while maintaining low power consumption characteristics suitable for battery-operated systems.
Replacement Considerations
LT1017CN8#PBF (Lower speed variant)
FAQ
Does the output 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 a load above the positive supply voltage?
Yes, the output stage is designed to allow driving loads connected to a supply more positive than the device.
