ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC COMPARATOR 1 W/VOLT REF 8SO
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：with Voltage Reference
- Number of Elements：1
- Output Type：CMOS, TTL
- Voltage - Supply, Single/Dual (±)：2V ~ 11V, ±1V ~ 5.5V
- Voltage - Input Offset (Max)：10mV @ 5V
- Current - Input Bias (Max)：-
- Current - Output (Typ)：40mA
- Current - Quiescent (Max)：4.4µA
- CMRR, PSRR (Typ)：80dB CMRR, 80dB PSRR
- Propagation Delay (Max)：15µs
- Hysteresis：50mV
- 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：-
Download product information
Overview
The LTC1440CS8#TRPBF is an ultralow power single comparator with a built-in 1.182V reference, housed in an 8-lead plastic SOIC package. It operates from a single 2V to 11V supply or dual ±1V to ±5.5V supply. The device features a typical quiescent current of 2.1µA at 5V and 3.9µA at 3V within the commercial temperature range (0°C to 70°C). It provides programmable hysteresis via the HYST pin, CMOS outputs capable of sourcing up to 40mA, and input common mode range extending from the negative supply to V+ minus 1.3V.
Feature Summary
- Built-in 1.182V bandgap reference output capable of driving bypass capacitors without oscillation
- Programmable hysteresis using external resistors connected to the dedicated HYST pin
- CMOS output stage that sources up to 40mA while eliminating crowbar switching currents
- Input common mode range includes the negative supply rail
Applications
- Battery-powered system monitoring
- Micropower threshold detectors
- Window comparators
- Oscillator circuits
Procurement Notes
Verify the specific suffix #TRPBF indicates lead-free tape and reel packaging. Confirm the CS8 designation corresponds to the commercial temperature grade (0°C to 70°C) and the 8-lead SOIC package outline. Ensure the source documentation matches the Analog Devices datasheet for the LTC1440 family to validate electrical characteristics against your design requirements.
Selection Notes
Select this component when low quiescent current is critical alongside the need for a stable internal voltage reference. The LTC1440 offers adjustable hysteresis, unlike the fixed-reference LTC1441. Verify that the required propagation delay and output drive current align with the CMOS output specifications. Consider the split supply capability if negative rail operation is necessary for the application.
Part Context
This part belongs to the LTC1440/LTC1441/LTC1442 family of micropower comparators. While the LTC1441 lacks hysteresis and the LTC1442 is a dual channel, the LTC1440 provides a single comparator with programmable hysteresis. It serves as a pin-compatible upgrade for older MAX921/922/923 devices, offering improved power efficiency and integrated reference functionality.
Replacement Considerations
Public confirmed substitute part numbers include LTC1440CDD, LTC1440CMS8, and LTC1440CN8. These variants share the same core functionality but differ in package type (DFN, MSOP, PDIP) or temperature grade.
