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Analog Devices Inc. LTC2914HDHC-1#TRPBF
- Part No.:
- LTC2914HDHC-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2914HDHC-1#TRPBF.pdf
- Description:
- IC SUPERVISOR 4 CHANNEL 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,397
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Product details
Overview
LTC2914HDHC-1#TRPBF from Analog Devices (formerly Linear Technology) is a quad-input undervoltage/overvoltage supervisor IC designed for simultaneous monitoring of four independent power rails in high-reliability systems. It features ±1.5% threshold accuracy over –40°C to +125°C, 62µA quiescent current, adjustable reset timeout via external capacitor, and latching OV output. It is used in industrial servers and automotive control units where precise, temperature-stable voltage supervision is required.
For engineers reviewing the LTC2914HDHC-1#TRPBF datasheet, LTC2914HDHC-1#TRPBF pinout, LTC2914HDHC-1#TRPBF application, or LTC2914HDHC-1#TRPBF equivalent, this page delivers verified functional specifications, validated pin roles, confirmed thermal-grade packaging, real-world timing behavior, and two rigorously cross-checked alternative parts for design continuity.
Technical Context
The LTC2914HDHC-1#TRPBF implements four independent comparator pairs (VHn/VLn), each configurable for positive or negative rail monitoring via a three-state SEL pin. Its internal 1V buffered reference enables accurate offset-based negative supply detection without external components.
It guarantees UV/OV assertion at VCC ≥ 1V, includes input glitch filtering with 50–500µs delay, and provides latched OV output behavior (LTC2914-1 variant). The TMR pin supports externally adjustable timeout (6–14ms range with 1nF) and can be strapped to VCC to bypass timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.3V to 6V direct supply; shunt-regulated up to 6.9V with series resistor |
| Threshold Accuracy | ±1.5% over full –40°C to +125°C operating range - ensures reliable trip points across thermal extremes |
| Quiescent Current | 62µA typical - enables low-power system supervision without burdening standby budgets |
| Input Threshold Voltage | 0.5V nominal (VUOT), referenced to internal 1V buffer - defines UV/OV decision boundary for all inputs |
| Reset Timeout Range | 6–14ms (–40°C to +125°C) with 1nF CTMR - provides configurable hold time after fault clearance |
| Operating Temperature | –40°C to +125°C (H-grade) - qualified for under-hood automotive and industrial edge applications |
| Package | 16-lead (5mm × 3mm) DFN with exposed pad - supports high-density PCB layouts and thermal dissipation |
Pinout & Package
Package: 16-lead plastic DFN (5mm × 3mm), exposed pad (Pin 17), RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VH1–VH4 (Pins 1,3,5,7) | High-side voltage monitor inputs | Trigger UV when below 0.5V (positive rail) or OV when below 0.5V (negative rail, per SEL state) |
| VL1–VL4 (Pins 2,4,6,8) | Low-side voltage monitor inputs | Trigger OV when above 0.5V (positive rail) or UV when above 0.5V (negative rail, per SEL state) |
| VCC (Pin 16) | Supply input / shunt regulator | Operates as direct supply ≤6V; regulates at 6.2–7.0V for higher inputs with external series resistor |
| GND (Pin 9) | Device ground reference | Reference node for all analog comparators and digital logic; exposed pad may connect here |
| UV (Pin 12) | Common undervoltage open-drain output | Asserts low on any valid UV condition; weak pull-up to VCC; holds low for adjustable timeout after recovery |
| OV (Pin 11) | Common overvoltage open-drain output (latched) | Latches low on first OV event (LTC2914-1); cleared only by LATCH pin high pulse |
| REF (Pin 10) | Buffered 1V reference output | Sources/sinks ±1mA; drives ≤1nF capacitive load; enables precision negative rail monitoring |
| TMR (Pin 15) | Timeout timer capacitor connection | CTMR sets UV/OV hold time (9ms/nF); tie to VCC to disable timeout |
| SEL (Pin 14) | Three-state polarity select | Configures V3/V4 inputs as positive (SEL=VCC) or negative (SEL=GND/open) monitors |
| LATCH (Pin 13) | OV latch clear/bypass control | Pull low to latch OV; pull high to clear latch or bypass latching (OV behaves like UV) |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent UV/OV monitoring | Simultaneously supervises four distinct power rails using eight dedicated input pins - eliminates need for multiple discrete supervisors |
| ±1.5% threshold accuracy over temperature | Maintains tight trip-point tolerance across –40°C to +125°C - critical for safety-critical industrial and automotive reset integrity |
| Configurable negative rail support | Uses internal 1V REF and SEL pin to monitor –5V, –12V, or other negative supplies without external op-amps or level shifters |
| Latching OV output (LTC2914-1) | Ensures persistent fault signaling until explicitly cleared - prevents missed alerts in noisy or transient-prone environments |
| 62µA quiescent current | Enables always-on supervision in battery-backed or energy-harvesting systems without compromising runtime |
Applications
| Industrial PLC Power Monitoring | Automotive ADAS Domain Controller |
|---|---|
Use Scenario: Supervising 5V, 3.3V, 2.5V, and 1.8V rails in programmable logic controller backplanes subject to wide ambient temperature swings. IC Role / Device Role / Timing Role: Quad UV/OV supervisor providing synchronized reset assertion with latched OV for fault logging and diagnostics. Use Value: ±1.5% threshold accuracy over –40°C to +125°C ensures deterministic reset behavior without recalibration across operating life. | Use Scenario: Monitoring core SoC, memory, camera sensor, and CAN transceiver supplies in autonomous driving ECUs. IC Role / Device Role / Timing Role: Single-chip solution detecting undervoltage on 1.2V core and overvoltage on –5V camera bias rail via SEL-configured negative monitoring. Use Value: Buffered 1V REF and three-state SEL enable accurate –5V supervision without external components - reduces BOM count and layout area. |
| Telecom Base Station PSU | Medical Imaging Power Sequencing |
Use Scenario: Validating redundant 48V-to-12V DC/DC outputs and intermediate 5V/3.3V distribution rails in carrier-grade telecom equipment. IC Role / Device Role / Timing Role: Simultaneous quad-rail monitoring with adjustable timeout (via TMR capacitor) to accommodate slow-rising distributed supplies. Use Value: Adjustable 6–14ms timeout (–40°C to +125°C) ensures reset pulse meets IEC 61000-4-11 immunity requirements for AC line dips. | Use Scenario: Ensuring clean power-up sequencing of FPGA, ADC, and high-voltage X-ray generator supplies in portable ultrasound systems. IC Role / Device Role / Timing Role: Supervisor triggering controlled shutdown upon 1.8V FPGA core undervoltage while maintaining latched OV alert for post-fault analysis. Use Value: LATCH pin allows diagnostic firmware to read OV status before clearing - supports FDA-required failure traceability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2915HDHC-1#TRPBF | Same pinout, identical functionality, but with ±0.75% threshold accuracy and tighter 0.5V ±0.5mV reference | Required where higher precision is mandated (e.g., high-end test equipment, metrology-grade systems) | Select when ±0.75% accuracy justifies cost premium; otherwise LTC2914HDHC-1#TRPBF offers optimal balance of performance and value |
| TPS3307-33DGNR | Triple-channel (not quad), fixed 3.3V UV/OV thresholds, no negative rail support, no latching OV | Suitable only for simpler 3-rail systems with no negative monitoring or fault persistence needs | Choose only if design uses exactly three positive rails and does not require latching or extended temperature operation |
Compared with LTC2915HDHC-1#TRPBF, the LTC2914HDHC-1#TRPBF trades 0.75% accuracy for broader availability and lower unit cost; versus TPS3307-33DGNR, it adds one monitored rail, negative supply capability, and OV latching - making it the sole option for complex, safety-aware, multi-rail systems.
Availability
LTC2914HDHC-1#TRPBF is available at Aetrix Electronics and suitable for industrial automation, automotive ADAS, and telecom infrastructure requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2914HDHC-1#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, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2914 product line delivers precision, low-power, multi-rail voltage supervision for mission-critical systems where reliability, thermal robustness, and design simplicity are mandatory - especially in harsh-environment applications.
FAQ
What is the operating temperature range of the LTC2914HDHC-1#TRPBF?
The LTC2914HDHC-1#TRPBF is rated for –40°C to +125°C operation (H-grade), validated across the full range for threshold accuracy, timing, and output drive strength. This makes it suitable for under-hood automotive, industrial motor drives, and base station power systems where ambient temperatures exceed standard commercial or industrial grades.
Does the LTC2914HDHC-1#TRPBF support monitoring of negative voltages?
Yes, the LTC2914HDHC-1#TRPBF supports monitoring of negative supplies using its buffered 1V reference and three-state SEL pin. When SEL is grounded or left open, V3 and V4 inputs are configured for negative rail monitoring - VHn triggers OV when below 0.5V, and VLn triggers UV when above 0.5V, enabling accurate supervision of –5V, –12V, or other negative rails without external circuitry.
How is the reset timeout period set on the LTC2914HDHC-1#TRPBF?
The reset timeout period on the LTC2914HDHC-1#TRPBF is set by connecting an external capacitor (CTMR) between the TMR pin (Pin 15) and GND. The timeout follows ~9ms/nF scaling - e.g., a 1nF capacitor yields ~8.5ms (6–14ms over temperature). Tying TMR to VCC disables the timeout, causing immediate UV/OV deassertion after fault clearance.
What is the function of the LATCH pin on the LTC2914HDHC-1#TRPBF?
The LATCH pin (Pin 13) controls the overvoltage output behavior of the LTC2914HDHC-1#TRPBF. When pulled low, OV latches low on first detection and remains asserted until LATCH is pulled high. When held high, OV operates like UV - asserting for adjustable timeout after fault clearance - enabling flexible fault-handling strategies in safety-critical designs.
Can the LTC2914HDHC-1#TRPBF operate with a supply voltage below 2.3V?
Yes, the LTC2914HDHC-1#TRPBF guarantees UV assertion and OV weak-pullup operation down to VCC = 1V. However, full comparator functionality (VHn/VLn monitoring) activates only above VCC = 2V (max 2.1V UVLO threshold). Below that, the device enters undervoltage lockout - asserting UV and blocking OV - ensuring predictable behavior during brownout conditions.
LTC2914HDHC-1#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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-DFN (5x3)
LTC2914HDHC-1#TRPBF FAQ
1.How can I place an order for LTC2914HDHC-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2914HDHC-1#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 LTC2914HDHC-1#TRPBF reliable?
The price and inventory of LTC2914HDHC-1#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2914HDHC-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2914HDHC-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2914HDHC-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2914HDHC-1#TRPBF?
LTC2914HDHC-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2914HDHC-1#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 LTC2914HDHC-1#TRPBF?
For technical support, including LTC2914HDHC-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2914HDHC-1#TRPBF requirements.
6.How does Aetrix verify that LTC2914HDHC-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2914HDHC-1#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 LTC2914HDHC-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2914HDHC-1#TRPBF?
All LTC2914HDHC-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2914HDHC-1#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 LTC2914HDHC-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC2914HDHC-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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