My Inquiry
My Account
Analog Devices Inc. LTC2914HGN-2#PBF
- Part No.:
- LTC2914HGN-2#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC2914HGN-2#PBF.pdf
- Description:
- IC SUPERVISOR 4 CHANNEL 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,798
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2914HGN-2#PBF from Analog Devices (formerly Linear Technology) is a quad-input, adjustable UV/OV supply monitor IC for simultaneous monitoring of four independent voltage rails in high-reliability systems. It supports ±1.5% threshold accuracy over temperature, 62µA quiescent current, and monitors up to two negative supplies using polarity-selectable inputs and a buffered 1V reference. It is used in industrial servers and automotive power management where precise, glitch-immune reset timing is required.
For engineers reviewing the LTC2914HGN-2#PBF datasheet, LTC2914HGN-2#PBF pinout, LTC2914HGN-2#PBF application, or LTC2914HGN-2#PBF equivalent, key selection criteria include guaranteed OV/UV assertion at VCC ≥ 1V, adjustable reset timeout via external capacitor, open-drain UV/OV outputs with weak internal pull-ups, and support for negative rail monitoring via SEL-configurable input polarity.
Technical Context
The LTC2914HGN-2#PBF implements four independent comparator pairs (VHn/VLn), each comparing input voltages against a common 500mV internal threshold referenced to a buffered 1V reference. Its three-state SEL pin selects polarity configuration across inputs 3 and 4-positive, mixed, or negative-enabling flexible rail monitoring without external components.
It features an adjustable timeout period (tUOTO) set by CTMR capacitance (6–14ms typical at 1nF), input glitch rejection via internal low-pass filtering, and guaranteed operation down to VCC = 1V. The DIS pin (Pin 13) disables both UV and OV outputs when pulled high, distinguishing it from the latching LTC2914-1 variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Operating Range | 2.3V to 6V direct supply; shunt-regulated above 6V with series resistor |
| Threshold Accuracy | ±1.5% over –40°C to +125°C - enables tight tolerance monitoring without calibration |
| Quiescent Current | 62µA typical - supports always-on monitoring in battery-backed or low-power systems |
| Input Threshold Voltage | 500mV ±8mV - stable reference point for all four UV/OV comparators |
| Reset Timeout Range | 6ms to >1000ms via CTMR (10pF–10nF) - configurable delay ensures system stabilization post-fault |
| Output Type | Open-drain UV/OV with weak internal pull-up to VCC - supports wired-OR and level-shifting |
| Negative Rail Support | Up to two negative supplies via SEL-configured VHn/VLn polarity - eliminates need for external inverters |
Pinout & Package
Package: 16-Lead Plastic SSOP (GN), –40°C to +125°C operating range, exposed pad optional.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VH1–VH4 | High-side voltage inputs | Trigger UV if below 500mV (positive mode); trigger OV if below 500mV (negative mode) |
| VL1–VL4 | Low-side voltage inputs | Trigger OV if above 500mV (positive mode); trigger UV if above 500mV (negative mode) |
| SEL | Three-state polarity select | Configures V3/V4 as positive, mixed, or negative monitor without external components |
| DIS | Output disable control | Pull high to force UV/OV high regardless of fault conditions - unique to -2 variant |
| TMR | Timeout capacitor connection | CTMR sets reset pulse width (9ms/nF); tie to VCC to bypass timer |
| REF | Buffered 1V reference output | Sources/sinks ±1mA; used as offset for negative rail monitoring circuits |
| UV / OV | Open-drain logic outputs | Assert low on fault; weak internal pull-up allows wired-OR and compatibility with 1.8V–5V logic |
| VCC / GND | Supply and ground | VCC operates as shunt regulator above 6V; requires ≥0.1µF bypass capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent UV/OV monitoring | Four separate voltage rails monitored simultaneously with shared UV/OV outputs |
| Adjustable reset timeout | Capacitor-programmable delay (6ms–1s+) prevents premature release after transient faults |
| SEL-configurable polarity | Single pin selects input behavior for V3/V4 - supports positive, negative, or mixed rail configurations |
| Guaranteed operation at low VCC | UV/OV asserted reliably down to VCC = 1V - critical for brown-out detection during power ramp |
| Glitch-immune comparator inputs | Integrated low-pass filtering rejects noise spikes without adding hysteresis error |
| Buffered 1V reference | Stable, loadable reference for precision resistive divider design in negative-supply applications |
Applications
| Server Power Sequencing | Automotive ADAS Power Supervision |
|---|---|
Use Scenario: Monitoring 12V, 5V, 3.3V, and 1.8V rails in a multi-processor server backplane during cold start and hot-swap events. IC Role / Device Role / Timing Role: LTC2914HGN-2#PBF acts as centralized voltage supervisor, asserting system reset until all rails stabilize within ±10% tolerance. Use Value: Adjustable tUOTO ensures reset remains active long enough for FPGA configuration and memory initialization, avoiding boot failure from marginal transients. | Use Scenario: Supervising dual 5V sensor supplies and two isolated 3.3V MCU domains in a radar ECU under wide ambient temperature (–40°C to +125°C). IC Role / Device Role / Timing Role: LTC2914HGN-2#PBF provides rail-specific UV/OV detection with guaranteed ±1.5% accuracy across full temp range, feeding fault signals to ASIL-B safety controller. Use Value: SEL pin enables direct monitoring of negative bias rails used in RF front-end amplifiers, eliminating external op-amps and reducing BOM count. |
| Industrial PLC I/O Module | Medical Imaging Power Integrity |
Use Scenario: Validating 24V field bus, 5V logic, 3.3V communication, and –5V analog bias rails in a DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: LTC2914HGN-2#PBF serves as fail-safe monitor with DIS pin tied high during firmware update to prevent spurious resets. Use Value: Open-drain UV/OV outputs allow direct connection to existing 24V-rated optocoupler inputs without level-shifting circuitry. | Use Scenario: Ensuring clean power sequencing for X-ray detector ASICs requiring tightly regulated 1.2V, 1.8V, 2.5V, and –3.3V supplies before image acquisition. IC Role / Device Role / Timing Role: LTC2914HGN-2#PBF detects sub-50µs glitches on any rail using internal comparator filtering, triggering immediate shutdown to protect sensitive analog front-end. Use Value: 62µA quiescent current enables continuous monitoring in standby mode without compromising battery life in portable imaging units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad voltage monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2914IGN-2#PBF | Same functionality and pinout; rated for –40°C to +85°C instead of –40°C to +125°C | Suitable for commercial-grade industrial equipment but not extended-temperature automotive or aerospace use | Select LTC2914HGN-2#PBF when operation beyond +85°C is required; otherwise, IGN-2 offers cost advantage |
| TPS3307-33DGNR | Triple-monitor only; fixed 3.3V UV/OV thresholds; no negative rail support or SEL pin | Limited to three rails; no adjustable trip points or polarity selection - requires external dividers for non-3.3V rails | Choose TPS3307-33DGNR only for simple 3.3V-only systems where quad monitoring and negative rail capability are unnecessary |
Compared with LTC2914IGN-2#PBF, LTC2914HGN-2#PBF extends thermal reliability to +125°C for under-hood or high-density PCB applications; compared with TPS3307-33DGNR, it provides full quad monitoring, programmable thresholds, and native negative rail support - making it suitable for complex, multi-rail safety-critical designs.
Availability
LTC2914HGN-2#PBF is available at Aetrix Electronics and suitable for industrial PLCs, automotive ADAS ECUs, medical imaging subsystems, and telecom infrastructure requiring stable component supply across extended temperature ranges.
Supply support for LTC2914HGN-2#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, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2914 product line delivers precision, low-power, multi-rail voltage supervision for mission-critical systems where deterministic reset behavior and wide-temperature reliability are essential.
FAQ
What is the operating temperature range of the LTC2914HGN-2#PBF?
The LTC2914HGN-2#PBF is rated for operation from –40°C to +125°C, making it suitable for under-hood automotive, industrial control, and high-density computing applications where ambient temperatures exceed standard commercial grade limits. This rating is confirmed by the "H" grade designation in the part number and verified in the Absolute Maximum Ratings table of the official datasheet.
How does the DIS pin function on the LTC2914HGN-2#PBF?
The DIS pin (Pin 13) on the LTC2914HGN-2#PBF disables both UV and OV outputs when pulled high, forcing them into a weakly pulled-high state regardless of input voltage conditions. This feature is exclusive to the -2 variant and enables safe firmware updates or diagnostic modes where reset assertion must be suppressed. When left open, the internal 2µA pull-down holds DIS low, enabling normal monitoring.
Can the LTC2914HGN-2#PBF monitor negative supply voltages?
Yes, the LTC2914HGN-2#PBF can monitor up to two negative supply voltages using its SEL pin to configure VH3/VL3 and VH4/VL4 for negative polarity operation. In this mode, VHn triggers OV when below 500mV and VLn triggers UV when above 500mV - leveraging the buffered 1V REF output as an offset reference. This eliminates external level-shifting circuitry.
What is the minimum VCC voltage required for reliable UV/OV assertion in the LTC2914HGN-2#PBF?
The LTC2914HGN-2#PBF guarantees UV and OV assertion for VCC ≥ 1V, as specified in the Electrical Characteristics table. At VCC = 1V, the UV output achieves VOL ≤ 0.15V at 100µA sink current, ensuring robust logic-level compatibility with low-voltage microcontrollers during brown-out conditions.
How is the reset timeout period configured on the LTC2914HGN-2#PBF?
The reset timeout period (tUOTO) on the LTC2914HGN-2#PBF is set by connecting an external capacitor (CTMR) between the TMR pin (Pin 15) and GND. The typical relationship is ~9ms per nanofarad (e.g., 1nF yields ~8.5ms). Tying TMR to VCC bypasses the timer entirely. Capacitor leakage must remain below 1.3µA to maintain accuracy over temperature.
LTC2914HGN-2#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 4
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SSOP
LTC2914HGN-2#PBF FAQ
1.How can I place an order for LTC2914HGN-2#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2914HGN-2#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 LTC2914HGN-2#PBF reliable?
The price and inventory of LTC2914HGN-2#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2914HGN-2#PBF is usually 5 days.
3.What payment methods are accepted for LTC2914HGN-2#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2914HGN-2#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2914HGN-2#PBF?
LTC2914HGN-2#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2914HGN-2#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 LTC2914HGN-2#PBF?
For technical support, including LTC2914HGN-2#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2914HGN-2#PBF requirements.
6.How does Aetrix verify that LTC2914HGN-2#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2914HGN-2#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 LTC2914HGN-2#PBF meets industry standards.
7.What is the process for return or replacement of LTC2914HGN-2#PBF?
All LTC2914HGN-2#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2914HGN-2#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 LTC2914HGN-2#PBF part is unused and in its original packaging.
Return procedure for LTC2914HGN-2#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2914HGN-2#PBF 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…
