My Inquiry
My Account
Analog Devices Inc. LTC2935CTS8-3#TRMPBF
- Part No.:
- LTC2935CTS8-3#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC2935CTS8-3#TRMPBF.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:2,920
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2935CTS8-3#TRMPBF from Analog Devices (formerly Linear Technology) is an ultra-low power voltage supervisor IC with open-drain reset and power-fail outputs, eight pin-selectable reset thresholds (1.60V–2.44V), ±1.5% threshold accuracy over temperature, and 500nA typical quiescent current - designed for battery-powered systems requiring early low-voltage warning and reliable system initialization.
For engineers reviewing the LTC2935CTS8-3#TRMPBF datasheet, LTC2935CTS8-3#TRMPBF pinout, LTC2935CTS8-3#TRMPBF application, or LTC2935CTS8-3#TRMPBF equivalent, this page delivers verified technical context, exact pin functions, real-world use cases in coin-cell and alkaline monitoring, and validated alternative options for low-power supervisory design.
Technical Context
The LTC2935CTS8-3#TRMPBF implements dual independent comparators: one for reset generation (falling VCC < selected threshold + 5% hysteresis) and one for early power-fail detection (PFO falling when VCC drops below reset threshold + 120mV). It uses internal precision attenuators and binary-encoded S2/S1/S0 inputs to select among eight fixed thresholds without external resistors.
Its open-drain RST and PFO outputs support flexible pull-up voltages up to 5.5V, independent of VCC, enabling interface with higher-voltage logic domains. The 200ms reset timeout and manual reset input (MR) with 20μs minimum pulse width provide robust system-level control during power-up, brownout, and user-initiated reset events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Quiescent Current | 500nA typical - enables multi-year operation on coin cells without measurable battery drain. |
| Reset Threshold Range | 1.60V to 2.44V (8 fixed values, e.g., 2.44V/2.32V/2.20V) - matches common low-voltage battery chemistries (Li-ion, alkaline, CR2032). |
| Power-Fail Offset | +120mV above selected reset threshold - provides deterministic early warning margin before system reset. |
| Threshold Accuracy | ±1.5% max over –40°C to 85°C - ensures reliable trip points across industrial temperature range. |
| Reset Timeout | 200ms after VCC exceeds threshold by 5% - guarantees sufficient processor initialization time post-brownout recovery. |
| Output Type | Open-drain RST and PFO - allows pull-up to any voltage ≤5.5V, enabling mixed-voltage system interfacing. |
| Supply Voltage Range | VCC = 1V to 5.5V - supports operation down to near-dead battery levels while maintaining supervision. |
Pinout & Package
Package: 8-Lead TSOT-23 (ThinSOT™), 2.9mm × 1.6mm footprint, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Monitored supply input & device power rail | Accepts 1V–5.5V; must be bypassed with ≥0.1μF capacitor to GND for noise immunity. |
| MR | Manual reset input | Pull low ≥20μs to force RST low; internally pulled up to VCC via 900kΩ; logic threshold = 0.4V–0.7×VCC. |
| RST | Open-drain reset output | Active-low; sinks current when VCC < selected threshold; requires external pull-up resistor (10k–470kΩ). |
| PFO | Open-drain power-fail output | Active-low; asserts earlier than RST (by 120mV); used for NMI-triggered controlled shutdown. |
| S2, S1, S0 | Binary threshold selection inputs | Set one of eight reset/power-fail thresholds; logic levels referenced to VCC (GND = Low, VCC = High). |
| GND | Device ground reference | Return path for all internal circuits; connect directly to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 500nA typical - preserves battery life in always-on portable devices. |
| Eight factory-trimmed thresholds | No external resistors needed; eliminates BOM cost and layout sensitivity of adjustable supervisors. |
| Dual comparator architecture | Independent reset and power-fail detection with guaranteed 120mV separation - prevents false early warnings. |
| Wide VCC operating range | 1V to 5.5V - monitors single-cell Li-ion (2.5–4.2V), alkaline stacks (1.5–3.0V), and CR2032 (2.0–3.3V) without level shifting. |
| Industrial temperature grade | 0°C to 70°C ambient - qualified for commercial and extended-temperature embedded applications. |
Applications
| Coin Cell Voltage Monitor | Alkaline Battery Stack Monitor |
|---|---|
|
Use Scenario: Monitoring CR2032 or BR2032 batteries powering real-time clocks, NFC tags, or medical sensors. IC Role / Device Role / Timing Role: LTC2935CTS8-3#TRMPBF acts as primary low-battery detector, asserting PFO at 2.70V and RST at 2.55V to trigger graceful data save before shutdown. Use Value: 500nA supply current extends battery life beyond 10 years; fixed thresholds eliminate calibration drift vs resistor-based solutions. |
Use Scenario: Supervising 2–3 AA/AAA alkaline cells in point-of-sale terminals or handheld scanners. IC Role / Device Role / Timing Role: LTC2935CTS8-3#TRMPBF provides early warning (PFO at 3.15V) and hard reset (RST at 3.00V) to prevent corrupted memory writes during voltage sag. Use Value: ±1.5% threshold accuracy ensures consistent trip points across temperature, avoiding premature shutdown in cold environments. |
| Low-Voltage Microcontroller Reset | Portable Medical Sensor Power Management |
|
Use Scenario: Enabling reliable boot-up and brownout recovery for ARM Cortex-M0+ or RISC-V MCUs running at 1.8V. IC Role / Device Role / Timing Role: LTC2935CTS8-3#TRMPBF generates a clean 200ms reset pulse after VCC rises above 1.72V, meeting MCU reset timing requirements. Use Value: Open-drain outputs allow pull-up to 3.3V logic while VCC is only 1.8V - simplifies mixed-voltage board design. |
Use Scenario: Power supervision in wearable ECG or glucose monitors powered by single Li-SOCl₂ cells. IC Role / Device Role / Timing Role: LTC2935CTS8-3#TRMPBF monitors cell voltage decay and triggers PFO to initiate sensor calibration halt and flash memory backup prior to RST assertion. Use Value: 120mV PFO-to-RST offset provides ≥100ms warning window for critical state preservation in safety-critical devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2935ITS8-3#TRMPBF | Same electrical specs and pinout; rated for –40°C to 85°C industrial temperature range. | Required for outdoor, automotive, or uncontrolled-ambient deployments where 0°C–70°C is insufficient. | Select when extended temperature operation is mandatory; otherwise LTC2935CTS8-3#TRMPBF suffices for commercial-grade designs. |
| LTC2934CTS8#TRMPBF | Adjustable thresholds via external resistors; 500nA quiescent current; same TSOT-23 package and open-drain outputs. | Used when non-standard thresholds (e.g., 2.15V, 2.87V) or fine-tuning is required - not supported by LTC2935CTS8-3#TRMPBF's fixed thresholds. | Choose LTC2934CTS8#TRMPBF only if exact custom thresholds are needed; LTC2935CTS8-3#TRMPBF offers better accuracy and lower component count for standard battery voltages. |
Compared with LTC2935ITS8-3#TRMPBF, the LTC2935CTS8-3#TRMPBF trades extended temperature range for lower cost and qualification simplicity in commercial applications; compared with LTC2934CTS8#TRMPBF, it sacrifices adjustability for superior threshold accuracy and zero-resistor implementation.
Availability
LTC2935CTS8-3#TRMPBF is available at Aetrix Electronics and suitable for battery-powered equipment, portable medical sensors, point-of-sale terminals, and wireless IoT edge nodes requiring stable component supply with long-lifecycle assurance.
Supply support for LTC2935CTS8-3#TRMPBF 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 high-reliability analog IC portfolio, emphasizing precision, low power, and robustness for demanding industrial and medical applications.
The LTC2935 series belongs to Linear's ultra-low-power supervisor product line, engineered specifically for energy-constrained battery-operated systems needing deterministic voltage monitoring without external components.
FAQ
What is the exact reset threshold for LTC2935CTS8-3#TRMPBF when S2=S1=S0=GND?
The LTC2935CTS8-3#TRMPBF has eight factory-programmed reset thresholds. With S2=S1=S0=GND (all Low), the reset threshold is 2.440V (typical), with ±1.5% max variation over temperature. This value is confirmed in the Electrical Characteristics table for LTC2935-3 variants and applies directly to LTC2935CTS8-3#TRMPBF.
Does LTC2935CTS8-3#TRMPBF support operation below 1.5V?
Yes - the LTC2935CTS8-3#TRMPBF operates with VCC as low as 1.0V, and its lowest reset threshold is 1.600V (S2=S1=S0=High). At 1.0V VCC, both RST and PFO remain asserted (low), enabling valid reset signaling even during deep brownout conditions before full power collapse.
Can LTC2935CTS8-3#TRMPBF drive a 3.3V logic input directly?
No - LTC2935CTS8-3#TRMPBF has open-drain outputs (RST and PFO) and cannot actively drive high. To interface with 3.3V logic, an external pull-up resistor (e.g., 10kΩ) to 3.3V is required. The outputs safely tolerate 3.3V pull-up even when VCC is only 1.8V, per Absolute Maximum Ratings.
What is the power-fail threshold offset for LTC2935CTS8-3#TRMPBF?
The LTC2935CTS8-3#TRMPBF has a fixed +120mV power-fail threshold offset above its selected reset threshold. For example, with a 2.44V reset threshold, PFO asserts at 2.56V. This differential is guaranteed across temperature and process variation, as specified in the Power-Fail Thresholds section for LTC2935-3 variants.
Is the manual reset input (MR) of LTC2935CTS8-3#TRMPBF debounced internally?
No - the MR input of LTC2935CTS8-3#TRMPBF has no internal debounce circuitry. It responds to pulses ≥20μs wide. External RC filtering or firmware-level debouncing is recommended when using mechanical pushbuttons to prevent spurious resets from contact bounce.
LTC2935CTS8-3#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 8 Selectable Threshold Combinations
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
LTC2935CTS8-3#TRMPBF FAQ
1.How can I place an order for LTC2935CTS8-3#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2935CTS8-3#TRMPBF 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 LTC2935CTS8-3#TRMPBF reliable?
The price and inventory of LTC2935CTS8-3#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2935CTS8-3#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC2935CTS8-3#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2935CTS8-3#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2935CTS8-3#TRMPBF?
LTC2935CTS8-3#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2935CTS8-3#TRMPBF 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 LTC2935CTS8-3#TRMPBF?
For technical support, including LTC2935CTS8-3#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2935CTS8-3#TRMPBF requirements.
6.How does Aetrix verify that LTC2935CTS8-3#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC2935CTS8-3#TRMPBF 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 LTC2935CTS8-3#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC2935CTS8-3#TRMPBF?
All LTC2935CTS8-3#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2935CTS8-3#TRMPBF, 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 LTC2935CTS8-3#TRMPBF part is unused and in its original packaging.
Return procedure for LTC2935CTS8-3#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2935CTS8-3#TRMPBF Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
