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Analog Devices Inc. LT1017CS8#PBF
- Part No.:
- LT1017CS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1017CS8#PBF.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:907
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Product details
Overview
LT1017CS8#PBF from Analog Devices (formerly Linear Technology) is a micropower dual comparator optimized for ultra-low supply current (30 μA typical at 5 V), rail-to-rail input common-mode range including ground, and operation from 1.1 V to 40 V single supply. It features internal pull-up current source, output capable of driving loads above V+, and 1 mV maximum offset voltage - used in battery-powered power supply monitors and low-voltage relay drivers.
For engineers reviewing the LT1017CS8#PBF datasheet, LT1017CS8#PBF pinout, LT1017CS8#PBF application, or LT1017CS8#PBF equivalent, key selection criteria include micropower operation below 100 μA, dual-comparator integration in SO-8, guaranteed 1.1 V minimum operating voltage, and open-collector–compatible output stage without external pull-up resistors.
Technical Context
The LT1017CS8#PBF implements two independent high-gain comparators with on-chip laser-trimmed input offset voltage and high common-mode rejection (105 dB typical). Its input stage operates down to V– and up to (V+ – 0.9 V), enabling ground-sensing functionality in single-supply systems.
The output stage uses a Class-B pull-up current source (no external resistor required) and an NPN sink transistor, allowing direct interfacing with logic families and loads referenced to supplies higher than V+. It supports indefinite short-circuit duration and drives ≥70 mA sink current at V+ = 4.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.1 V to 40 V single supply - enables operation from coin cell to industrial bus rails. |
| Supply Current (Typ) | 30 μA at 5 V - supports multi-year battery life in always-on sensing nodes. |
| Input Offset Voltage (Max) | 1 mV - ensures accurate threshold detection in precision voltage monitoring. |
| Input Bias Current (Max) | 15 nA - minimizes error in high-impedance sensor interfaces (e.g., thermistors). |
| Output Sink Current (Min) | 30 mA at V+ = 4.5 V - directly drives relays, LEDs, or logic inputs without buffering. |
| Common-Mode Range | Includes V– (ground) and extends to (V+ – 0.9 V) - supports true ground-referenced input sensing. |
| Propagation Delay (Typ) | 20 μs at 5 mV overdrive - suitable for slow-varying signals like temperature or battery voltage trends. |
Pinout & Package
LT1017CS8#PBF is housed in an 8-lead plastic small-outline (SO-8, narrow body, 0.150″ width) package per LTC DWG #05-08-1610, RoHS-compliant and lead-free (#PBF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (–IN A) | Inverting input of comparator A | Accepts signal to be compared against non-inverting input; supports common-mode down to V–. |
| 2 (+IN A) | Non-inverting input of comparator A | Reference or threshold input; matched bias current minimizes net input error. |
| 3 (OUT A) | Open-collector–compatible output of comparator A | Sinks current only; requires external pull-up or uses internal Class-B pull-up (no resistor needed). |
| 4 (V–) | Negative supply terminal | Ground reference for single-supply operation; common return for both comparators. |
| 5 (V+) | Positive supply terminal | Single supply rail (1.1–40 V); powers both comparators and internal bias circuitry. |
| 6 (OUT B) | Open-collector–compatible output of comparator B | Independent output; can drive separate loads or wired-OR logic with OUT A. |
| 7 (+IN B) | Non-inverting input of comparator B | Second independent threshold input; identical electrical specs to +IN A. |
| 8 (–IN B) | Inverting input of comparator B | Second independent signal input; fully isolated electrically from channel A. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 30 μA typical supply current enables >10-year battery life in coin-cell–powered alarms. |
| True ground-sensing inputs | Input common-mode range includes V–, allowing direct connection to 0 V referenced sensors. |
| Internal pull-up current source | Eliminates need for external pull-up resistors, reducing BOM count and board space in dual-comparator designs. |
| Output drives loads above V+ | Enables level-shifting to higher-voltage logic (e.g., 12 V microcontroller I/O) without external transistors. |
| Pin-compatible with LM393 | Direct drop-in replacement for legacy dual comparators in existing SO-8 footprints and layouts. |
Applications
| Battery-Powered Supply Monitor | Low-Voltage Relay Driver |
|---|---|
|
Use Scenario: Monitoring 1.5 V alkaline cell voltage in portable medical devices to trigger low-battery warning before cutoff. IC Role / Device Role / Timing Role: Dual comparator compares cell voltage against precision 1.2 V reference (LT1004) and hysteresis thresholds. Use Value: 30 μA quiescent current extends usable battery life by >3× versus standard comparators; 1.1 V minimum operation captures full discharge curve. |
Use Scenario: Driving 5 V/100 mA electromechanical relay from a 3.3 V microcontroller GPIO in industrial IoT node. IC Role / Device Role / Timing Role: LT1017CS8#PBF acts as level-shifting interface: MCU GPIO triggers comparator, output sinks relay coil current. Use Value: 30 mA min sink current directly energizes relay without external transistor; internal pull-up avoids extra resistor and layout complexity. |
| Precision Refrigerator Alarm | Two-Wire Remote Comparator |
|
Use Scenario: Detecting temperature excursions in refrigerator compartments using YSI 44011 thermistor network. IC Role / Device Role / Timing Role: One comparator channel monitors upper limit (5 °C), second monitors lower limit (0 °C) with hysteresis. Use Value: 1 mV max offset ensures ±0.1 °C threshold accuracy; rail-to-rail inputs accommodate thermistor divider outputs near ground or V+. |
Use Scenario: Remote voltage comparison over long 2-wire loop (e.g., 4–20 mA transmitter diagnostics) with minimal wiring. IC Role / Device Role / Timing Role: LT1017CS8#PBF compares sensed voltage against local reference and drives loop current via external transistor. Use Value: Output capable of sourcing current into load above V+ allows direct control of loop driver without level-shifter ICs or isolated supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Higher supply current (500 μA typ), no internal pull-up, 2 mV max offset, wider temp range (–40°C to 85°C). | Not suitable for sub-100 μA battery lifetime targets; requires external pull-up resistors. | Select when cost sensitivity outweighs micropower needs and layout allows pull-up resistors. |
| LTC1040CS8#PBF | Lower supply current (1.5 μW avg in sampling mode), rail-to-rail inputs/outputs, 0.5 mV max offset, but slower (100 μs propagation delay). | Optimized for ultra-low-duty-cycle wake-up sensing, not continuous monitoring. | Select for intermittent wake-up applications where average current <1 μA is mandatory. |
Compared with LM393DR and LTC1040CS8#PBF, the LT1017CS8#PBF uniquely balances sub-100 μA continuous operation, internal pull-up, and 1 mV precision - making it optimal for always-on, space-constrained, single-supply comparator functions requiring reliability across 1.1–40 V rails.
Availability
LT1017CS8#PBF is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial sensor interfaces, and low-voltage power management systems requiring stable component supply across extended temperature and voltage ranges.
Supply support for LT1017CS8#PBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices acquired Linear Technology in 2017 and maintains its precision analog portfolio, renowned for high-performance op amps, comparators, and power management ICs targeting demanding industrial and automotive applications.
The LT1017CS8#PBF belongs to Linear's legacy micropower comparator family, designed specifically for energy-constrained, wide-supply-range applications such as portable medical devices, remote sensors, and battery-backed system supervisors.
FAQ
What is the minimum operating voltage for LT1017CS8#PBF?
The LT1017CS8#PBF operates down to 1.1 V (guaranteed at 1 mA load), enabling use with single alkaline, NiMH, or LiFePO₄ cells. This specification is verified across the C-grade temperature range (0°C to 70°C) and confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables of the official datasheet.
Does LT1017CS8#PBF require external pull-up resistors on its outputs?
No. The LT1017CS8#PBF integrates a Class-B pull-up current source on each output, eliminating the need for external pull-up resistors. This feature reduces component count and PCB area while maintaining compatibility with open-collector logic interfaces - a key differentiator from LM393-type comparators.
Can LT1017CS8#PBF drive a load referenced to a voltage higher than V+?
Yes. The output stage of LT1017CS8#PBF is explicitly designed to sink current into loads connected to supplies more positive than V+, as documented in the "Description" section and Typical Application TA04. This enables direct level-shifting without additional transistors or isolated supplies.
What is the maximum input offset voltage specification for LT1017CS8#PBF?
The LT1017CS8#PBF has a maximum input offset voltage of 1 mV at 25°C, specified over the full C-grade operating temperature range (0°C to 70°C). This value is laser-trimmed during manufacturing and appears in the Electrical Characteristics table under "Offset Voltage" for LT1017 devices.
Is LT1017CS8#PBF pin-compatible with industry-standard dual comparators?
Yes. The LT1017CS8#PBF is pin-compatible with LM393-type dual comparators in the 8-lead SO package. Pin assignments (–IN A, +IN A, OUT A, V–, V+, OUT B, +IN B, –IN B) match the standard SO-8 dual comparator footprint, enabling drop-in replacement in existing designs.
LT1017CS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Pull Up
- Voltage - Supply, Single/Dual (±):
- 1.1V ~ 40V, ±0.55V ~ 20V
- :
- 1mV @ ±20V
- Voltage - Input Offset (Max):
- 0.015µA @ ±20V
- Current - Input Bias (Max):
- 65mA @ 4.5V
- Current - Output (Typ):
- 60µA
- Current - Quiescent (Max):
- 115dB CMRR, 110dB PSRR
- CMRR, PSRR (Typ):
- 22µs
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SO
LT1017CS8#PBF FAQ
1.How can I place an order for LT1017CS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1017CS8#PBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LT1017CS8#PBF reliable?
The price and inventory of LT1017CS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1017CS8#PBF is usually 5 days.
3.What payment methods are accepted for LT1017CS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1017CS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1017CS8#PBF?
LT1017CS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1017CS8#PBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LT1017CS8#PBF?
For technical support, including LT1017CS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1017CS8#PBF requirements.
6.How does Aetrix verify that LT1017CS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1017CS8#PBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LT1017CS8#PBF meets industry standards.
7.What is the process for return or replacement of LT1017CS8#PBF?
All LT1017CS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1017CS8#PBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LT1017CS8#PBF part is unused and in its original packaging.
Return procedure for LT1017CS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1017CS8#PBF Tags
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