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Analog Devices Inc. LT1017CS8#TRPBF
- Part No.:
- LT1017CS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1017CS8#TRPBF.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:961
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Product details
Overview
LT1017CS8#TRPBF from Analog Devices (formerly Linear Technology) is a micropower dual comparator optimized for ultra-low supply current (30 μA typical at 5 V), 1.1 V minimum operating voltage, and rail-to-rail input common-mode range including ground. It features internal pull-up current source, open-collector-compatible output capable of driving loads above V+, and 1 mV maximum offset voltage - enabling precision sensing in battery-powered refrigeration alarms, power monitors, and low-voltage oscillators.
For engineers reviewing the LT1017CS8#TRPBF datasheet, LT1017CS8#TRPBF pinout, LT1017CS8#TRPBF application, or LT1017CS8#TRPBF equivalent, key selection criteria include micropower operation down to 1.1 V, guaranteed 1 mV max offset over 0°C–70°C, internal pull-up eliminating external resistors, output drive capability beyond V+, and compatibility with legacy LM393-style layouts.
Technical Context
The LT1017CS8#TRPBF implements two independent high-gain comparators with on-chip laser-trimmed input offset voltage and matched input transistors to minimize bias current (15 nA max) and offset current (3 nA max). Its class-B pull-up output stage delivers up to 70 mA sink current while eliminating external pull-up resistors and reducing quiescent power.
Input stage design supports common-mode voltages from V– to (V+ – 0.9 V), includes overdrive protection to prevent false outputs, and maintains >105 dB CMRR and >96 dB PSRR across temperature - critical for stable operation in noisy industrial sensor interfaces and low-voltage power sequencing circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.1 V to 40 V - enables direct operation from single alkaline cells or wide-input industrial rails. |
| Supply Current (Typ) | 30 μA at 5 V - reduces battery drain in multi-year portable sensor nodes. |
| Max Offset Voltage | 1 mV at 25°C - ensures accurate threshold detection in precision voltage monitors. |
| Input Bias Current (Max) | 15 nA - minimizes error in high-impedance sensor interfaces (e.g., thermistors, photodiodes). |
| Output Sink Current | 70 mA - directly drives relays, LEDs, or logic inputs without external buffers. |
| Common-Mode Range | V– to (V+ – 0.9 V) - supports ground-referenced inputs and single-supply operation. |
| Propagation Delay | 20 μs typical (RL = 200 kΩ, 10 mV overdrive) - suitable for slow-control timing and monitoring, not high-speed data acquisition. |
Pinout & Package
LT1017CS8#TRPBF is housed in an 8-lead plastic SOIC (S8) package, 0.150-inch body width, with standard JEDEC MS-012AC footprint and 1.27 mm lead pitch. Pin 1 is marked by a notch or dot; device is RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: –IN A | Inverting input of comparator A | Accepts signals down to V–; differential input voltage rating ±40 V. |
| 2: +IN A | Non-inverting input of comparator A | Supports common-mode range to V–; laser-trimmed for low offset. |
| 3: V– | Negative supply terminal | Reference for both comparators; may be tied to ground in single-supply use. |
| 4: OUT A | Open-collector output of comparator A | Sinks current only; requires external pull-up or uses internal 100 μA pull-up. |
| 5: OUT B | Open-collector output of comparator B | Independent sink path; shares same internal pull-up architecture as OUT A. |
| 6: –IN B | Inverting input of comparator B | Matched to –IN A for consistent performance across dual channels. |
| 7: +IN B | Non-inverting input of comparator B | Same input specs as +IN A; enables differential or window-comparator topologies. |
| 8: V+ | Positive supply terminal | Accepts up to 40 V; powers internal bias networks and output stage. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 30 μA typical supply current enables >10-year battery life in coin-cell applications. |
| Internal pull-up current source | Eliminates external resistor, saving board space and reducing standby power in always-on monitors. |
| Output drives loads above V+ | Allows interfacing with higher-voltage logic or isolated domains without level-shifting circuitry. |
| Laser-trimmed input offset | Guarantees ≤1 mV max offset over full 0°C–70°C commercial temperature range. |
| Overdrive protection | Prevents latch-up or false outputs when inputs exceed common-mode limits - critical in fault-detection systems. |
Applications
| Refrigeration Temperature Alarm | Low-Voltage Power Supply Monitor |
|---|---|
Use Scenario: Detecting temperature excursions in 1.5 V-powered refrigerator compartments using YSI 44011 thermistor network. IC Role / Device Role / Timing Role: Dual comparator configured as window detector comparing thermistor voltage against 0°C/5°C thresholds. Use Value: 1.1 V minimum operating voltage allows direct 1.5 V battery operation; 30 μA supply current extends battery life beyond 5 years. | Use Scenario: Monitoring 5 V rail integrity in embedded controllers to trigger reset or LED warning before brownout. IC Role / Device Role / Timing Role: Comparator A compares rail voltage to 4.75 V reference; comparator B validates >4.5 V for safe operation. Use Value: 1 mV offset ensures accurate trip points; internal pull-up simplifies interface to microcontroller GPIO. |
| Relay Driver Interface | Precision Tri-Wave Generator |
Use Scenario: Driving 12 V relay coils from 5 V microcontroller I/O in industrial control panels. IC Role / Device Role / Timing Role: LT1017CS8#TRPBF output sinks relay coil current; second comparator provides feedback or status indication. Use Value: 70 mA sink capability eliminates need for discrete transistor driver; 40 V absolute max rating protects against inductive kickback. | Use Scenario: Generating synchronized triangle and square waves for analog test equipment powered from 5 V rails. IC Role / Device Role / Timing Role: One comparator acts as integrator reset switch; the other provides zero-crossing detection for waveform symmetry. Use Value: Matched input specs between channels ensure balanced rise/fall times; low bias current prevents capacitor leakage errors in integrator. |
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). | Less suitable for battery life-critical designs; requires external pull-ups; better for cost-sensitive industrial controls. | Choose LM393DR where lowest BOM cost and extended temperature range outweigh micropower needs. |
| LTC1040CS8#TRPBF | Lower supply current (1.5 μW per sample), rail-to-rail inputs, but slower (200 μs propagation delay); 0.5 mV max offset. | Optimized for ultra-low-duty-cycle sampling (e.g., periodic sensor reads), not continuous monitoring. | Choose LTC1040CS8#TRPBF only for intermittent wake-up architectures where average current matters more than real-time response. |
Compared with LM393DR and LTC1040CS8#TRPBF, the LT1017CS8#TRPBF uniquely balances sub-100 μA continuous operation, 1 mV precision, and robust 70 mA sink drive - making it optimal for always-on, battery-powered monitoring where accuracy and longevity coexist.
Availability
LT1017CS8#TRPBF is available at Aetrix Electronics and suitable for refrigeration alarms, low-voltage power monitors, and relay interface circuits requiring stable component supply, long-term lifecycle support, and guaranteed commercial-grade (0°C to 70°C) performance.
Supply support for LT1017CS8#TRPBF 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. Linear pioneered high-performance, low-power comparators and references for demanding industrial and instrumentation applications.
The LT1017 series was designed specifically for micropower, wide-supply dual-comparator applications where battery life, input precision, and output flexibility are jointly critical - such as portable medical sensors, energy-harvesting systems, and automotive body electronics.
FAQ
What is the minimum operating voltage for LT1017CS8#TRPBF?
The LT1017CS8#TRPBF operates down to 1.1 V, verified across the 0°C to 70°C commercial temperature range. This enables direct use with single 1.5 V alkaline or lithium cells in portable equipment. At 1.1 V, output sink current drops to ~10 mA, and propagation delay increases - design validation at end-of-battery voltage is recommended for critical timing applications. The LT1017CS8#TRPBF maintains functional comparision down to this rail, unlike many comparators requiring ≥2.7 V.
Does LT1017CS8#TRPBF have internal pull-up current, and how does it work?
Yes, the LT1017CS8#TRPBF integrates a class-B pull-up current source (~100 μA typical) on each output, eliminating the need for external pull-up resistors. This reduces PCB area, component count, and standby power - especially valuable in battery-operated systems. The internal pull-up allows the output to rise toward V+ even when driving light loads, while retaining open-collector behavior for wired-OR configurations. The LT1017CS8#TRPBF datasheet confirms this feature enables "eliminating the need for an external resistive pull-up and saving power."
Can LT1017CS8#TRPBF drive loads referenced to a voltage higher than V+?
Yes, the LT1017CS8#TRPBF output stage is explicitly designed to drive loads connected to a supply more positive than V+, as confirmed in the official datasheet: "The output stage is also designed to allow driving loads connected to a supply more positive than the device." This is achieved via the open-collector architecture combined with internal clamping - enabling direct interface to 12 V or 24 V logic domains from a 3.3 V or 5 V LT1017CS8#TRPBF supply, without external level shifters.
What is the guaranteed maximum input offset voltage for LT1017CS8#TRPBF over temperature?
The LT1017CS8#TRPBF guarantees a maximum input offset voltage of 1 mV over the full commercial temperature range (0°C to 70°C), as specified in the Electrical Characteristics table. This value includes initial trim and drift contributions. At 125°C (extended range), the max offset rises to 1.5 mV. The LT1017CS8#TRPBF achieves this via on-chip laser trimming, and the spec is tested and binned - not just typical or guaranteed only at 25°C.
Is LT1017CS8#TRPBF pin-compatible with LM393-type comparators?
Yes, the LT1017CS8#TRPBF is pin-compatible with industry-standard dual comparators including the LM393, as stated in the datasheet: "The LT1017/LT1018 are pin compatible with older dual comparators such as 393 type devices." Pin mapping (1: –IN A, 2: +IN A, 3: V–, 4: OUT A, 5: OUT B, 6: –IN B, 7: +IN B, 8: V+) matches the SOIC-8 LM393 footprint exactly - enabling drop-in replacement in existing designs without layout changes, provided supply and loading requirements are verified.
LT1017CS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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#TRPBF FAQ
1.How can I place an order for LT1017CS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1017CS8#TRPBF 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#TRPBF reliable?
The price and inventory of LT1017CS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1017CS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1017CS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1017CS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1017CS8#TRPBF?
LT1017CS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1017CS8#TRPBF 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#TRPBF?
For technical support, including LT1017CS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1017CS8#TRPBF requirements.
6.How does Aetrix verify that LT1017CS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1017CS8#TRPBF 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#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1017CS8#TRPBF?
All LT1017CS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1017CS8#TRPBF, 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#TRPBF part is unused and in its original packaging.
Return procedure for LT1017CS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1017CS8#TRPBF Tags
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