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Analog Devices Inc. LT1018CSW#TRPBF
- Part No.:
- LT1018CSW#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Comparators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
LT1018CSW#TRPBF.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,472
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Product details
Overview
LT1018CSW#TRPBF from Analog Devices (formerly Linear Technology) is a dual micropower comparator optimized for higher speed and precision over its LT1017 counterpart. It operates from 1.1V to 40V single supply, features 110μA typical supply current at 5V, ≤0.7mV max offset voltage, and delivers 70mA sink output drive. It is used in low-voltage power supply monitors and relay drivers where rail-to-rail input common-mode range including ground and output capability above V+ are required.
For engineers reviewing the LT1018CSW#TRPBF datasheet, LT1018CSW#TRPBF pinout, LT1018CSW#TRPBF application, or LT1018CSW#TRPBF equivalent, key selection criteria include its 110μA supply current at 5V, 70mA output sink capability, 1.1V minimum operating voltage, and compatibility with open-collector load configurations requiring no external pull-up resistor.
Technical Context
The LT1018CSW#TRPBF integrates two independent comparators with internal Class-B pull-up current sources, eliminating external pull-up resistors and enabling direct driving of loads referenced to supplies more positive than V+. Its input stage uses on-chip trimming to minimize offset voltage and achieves >105dB common-mode rejection ratio across –20V to +19.1V common-mode range.
It supports operation down to 1.15V supply while maintaining guaranteed performance up to 40V, with output saturation voltages as low as 5mV at 0.1mA sink and <100mV at 10mA sink. Input bias current remains ≤15nA at 25°C, and differential input voltage tolerance extends to ±40V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.1V to 40V single supply - enables battery-powered and industrial high-voltage monitoring applications |
| Max Offset Voltage | 0.7mV at 25°C - ensures accurate threshold detection without calibration in precision sensing |
| Supply Current | 110μA typical at 5V - balances speed and ultra-low power for always-on monitoring circuits |
| Output Sink Current | 70mA typical - directly drives relays, LEDs, or logic inputs without external buffer transistors |
| Input Bias Current | 15nA max at 25°C - minimizes error in high-impedance sensor interfaces and RC timing networks |
| Common-Mode Range | Includes ground to (V+ – 0.9V) - supports ground-referenced inputs in single-supply systems |
| Output Stage Type | Internal Class-B pull-up + open-collector compatible - eliminates external pull-up resistor and saves board space/power |
Pinout & Package
LT1018CSW#TRPBF is housed in a 16-lead plastic SO (wide, 0.300-inch body width) package, designated SW. Pin 1 is identified by a notch on top and cavities on bottom per manufacturer drawing #05-08-1620. The package is RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 13, 14, 15, 16 | No Connect (NC) | Unused pins - must be left floating or tied to ground per layout best practices; no internal connection |
| 5 | Output A | Open-collector compatible output - sinks current when active; requires external pull-up only if sourcing needed |
| 6 | Inverting Input A (–IN A) | Differential input node for first comparator - accepts signals down to V– and up to (V+ – 0.9V) |
| 7 | Non-inverting Input A (+IN A) | Differential input node for first comparator - same common-mode range as –IN A |
| 8 | Negative Supply (V–) | Ground or negative rail reference - supports single- or dual-supply operation |
| 9 | Positive Supply (V+) | Main supply input - accepts 1.1V to 40V; powers both comparators and internal pull-up circuitry |
| 10 | Output B | Open-collector compatible output - independent of Output A; shares same drive capability |
| 11 | Inverting Input B (–IN B) | Differential input node for second comparator - electrically identical to –IN A |
| 12 | Non-inverting Input B (+IN B) | Differential input node for second comparator - matches +IN A performance and range |
Key Features
| Feature | Design Value |
|---|---|
| Internal pull-up current source | Eliminates need for external pull-up resistor - reduces component count, PCB area, and static power in high-side switching |
| Output drives loads above V+ | Enables level-shifting and interface to higher-voltage domains without external level translators |
| 1.1V minimum operating voltage | Supports operation from single alkaline or lithium coin cells - ideal for portable and energy-harvesting systems |
| Pin-compatible with LM393 family | Allows drop-in replacement in legacy designs without layout changes - accelerates redesign cycles |
| Guaranteed performance over 0°C to 70°C | Validated for commercial temperature range - suitable for consumer, industrial control, and instrumentation |
Applications
| Power Supply Monitor | Relay Driving |
|---|---|
Use Scenario: Monitoring 5V rail for brown-out detection in embedded controllers. IC Role / Device Role / Timing Role: Dual comparator compares rail voltage against precision reference to assert fault flag. Use Value: 1.1V start-up capability ensures reliable operation during cold-start; 0.7mV offset enables tight 5.0V ±2% window detection. |
Use Scenario: Directly energizing 12V relay coils in battery-powered HVAC sensors. IC Role / Device Role / Timing Role: Output A sinks relay coil current; Output B provides status feedback to MCU. Use Value: 70mA sink drive eliminates external transistor; internal pull-up avoids wasted quiescent current in standby. |
| Oscillator Circuit | Low-Power Sensor Interface |
Use Scenario: Generating precise triangle wave for analog signal generation in portable test equipment. IC Role / Device Role / Timing Role: One comparator acts as integrator reset switch; second provides hysteresis control. Use Value: 110μA supply current enables multi-second battery life; rail-to-rail input allows full swing integration. |
Use Scenario: Converting thermistor resistance into digital alert for refrigerator temperature alarms. IC Role / Device Role / Timing Role: Compares conditioned thermistor voltage against fixed reference to trigger LED indicator. Use Value: 15nA input bias prevents loading of high-Z thermistor divider; 1.1V operation supports 1.5V coin-cell supply. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1018CN8#PBF | 8-lead PDIP package; same electrical specs but larger footprint and higher θJA (140°C/W vs 130°C/W) | Suitable for prototyping or through-hole assembly; not recommended for space-constrained PCBs | Select when manual soldering or breadboard evaluation is required |
| LTC1040CS8#TRPBF | Lower 1.5μW typical power (vs 550μW for LT1018); rail-to-rail inputs; 0.5mV max offset | Better for ultra-low-power sampling systems; slower response time limits use in fast oscillators or relay drivers | Choose when sub-10μA average current is mandatory and speed <10kHz suffices |
Compared with LT1018CN8#PBF, LT1018CSW#TRPBF offers superior thermal performance and smaller footprint; compared with LTC1040CS8#TRPBF, it trades 20× higher quiescent power for 3× faster response and 70mA output drive - making it optimal for active load switching rather than duty-cycled sensing.
Availability
LT1018CSW#TRPBF is available at Aetrix Electronics and suitable for power supply monitors, relay drivers, oscillator circuits, and low-power sensor interfaces requiring stable component supply across industrial and commercial temperature ranges.
Supply support for LT1018CSW#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 full product support, manufacturing, and documentation for legacy Linear parts including the LT1018 series.
The LT1018 belongs to Linear's micropower comparator product line, designed for precision, low-voltage, and wide-supply applications in battery-powered instrumentation, industrial controls, and power management systems.
FAQ
What is the minimum operating voltage for LT1018CSW#TRPBF?
The LT1018CSW#TRPBF operates down to 1.15V at 25°C with guaranteed functionality, enabling use with single-cell alkaline (1.5V), lithium (3V), or even partially discharged batteries. This specification is validated across the C-grade temperature range (0°C to 70°C) and documented in the Absolute Maximum Ratings and Electrical Characteristics tables of the official datasheet.
Does LT1018CSW#TRPBF require an external pull-up resistor?
No, the LT1018CSW#TRPBF includes an internal Class-B pull-up current source on each output, eliminating the need for external pull-up resistors in most open-collector configurations. This feature reduces component count, PCB area, and static power consumption - particularly valuable in battery-operated systems where every microamp matters.
Can LT1018CSW#TRPBF drive loads referenced to a voltage higher than V+?
Yes, the LT1018CSW#TRPBF output stage is explicitly designed to drive loads connected to a supply more positive than V+, as confirmed in the device description and Typical Applications section. This capability enables level-shifting and interfacing with higher-voltage subsystems without external translators or charge pumps.
What is the maximum output sink current of LT1018CSW#TRPBF?
The LT1018CSW#TRPBF delivers a typical output sink current of 70mA at V+ = 4.5V and V– = 0V with >30mV overdrive, as specified in the Electrical Characteristics table. This allows direct driving of small relays, LEDs, and logic inputs without external buffer transistors - simplifying design and improving reliability.
Is LT1018CSW#TRPBF pin-compatible with LM393-based designs?
Yes, the LT1018CSW#TRPBF is pin-compatible with industry-standard dual comparators such as the LM393 when used in the 8-pin SO or PDIP packages. However, the SW (16-lead) package has NC pins occupying positions 1–4 and 13–16 - so pin mapping differs. For drop-in replacement in existing 8-pin layouts, LT1018CS8#TRPBF is the appropriate variant.
LT1018CSW#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 16-SOIC (0.295", 7.50mm 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):
- 0.075µA @ ±20V
- Current - Input Bias (Max):
- 70mA @ 4.5V
- Current - Output (Typ):
- 250µA
- Current - Quiescent (Max):
- 115dB CMRR, 110dB PSRR
- CMRR, PSRR (Typ):
- 6µs
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 16-SO
LT1018CSW#TRPBF FAQ
1.How can I place an order for LT1018CSW#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1018CSW#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 LT1018CSW#TRPBF reliable?
The price and inventory of LT1018CSW#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1018CSW#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1018CSW#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1018CSW#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1018CSW#TRPBF?
LT1018CSW#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1018CSW#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 LT1018CSW#TRPBF?
For technical support, including LT1018CSW#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1018CSW#TRPBF requirements.
6.How does Aetrix verify that LT1018CSW#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1018CSW#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 LT1018CSW#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1018CSW#TRPBF?
All LT1018CSW#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1018CSW#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 LT1018CSW#TRPBF part is unused and in its original packaging.
Return procedure for LT1018CSW#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1018CSW#TRPBF Tags
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